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-rw-r--r--arch/powerpc/kvm/Makefile9
-rw-r--r--arch/powerpc/kvm/book3s_emulate.c30
-rw-r--r--arch/powerpc/kvm/book3s_hv.c2
-rw-r--r--arch/powerpc/kvm/book3s_pr.c5
-rw-r--r--arch/powerpc/kvm/booke.c70
-rw-r--r--arch/powerpc/kvm/booke.h1
-rw-r--r--arch/powerpc/kvm/booke_emulate.c3
-rw-r--r--arch/powerpc/kvm/booke_interrupts.S49
-rw-r--r--arch/powerpc/kvm/e500.c16
-rw-r--r--arch/powerpc/kvm/e500.h1
-rw-r--r--arch/powerpc/kvm/e500_mmu.c (renamed from arch/powerpc/kvm/e500_tlb.c)659
-rw-r--r--arch/powerpc/kvm/e500_mmu_host.c699
-rw-r--r--arch/powerpc/kvm/e500_mmu_host.h18
-rw-r--r--arch/powerpc/kvm/emulate.c5
-rw-r--r--arch/powerpc/kvm/powerpc.c17
15 files changed, 910 insertions, 674 deletions
diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile
index 1e473d4..b772ede 100644
--- a/arch/powerpc/kvm/Makefile
+++ b/arch/powerpc/kvm/Makefile
@@ -10,7 +10,8 @@ common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o \
eventfd.o)
CFLAGS_44x_tlb.o := -I.
-CFLAGS_e500_tlb.o := -I.
+CFLAGS_e500_mmu.o := -I.
+CFLAGS_e500_mmu_host.o := -I.
CFLAGS_emulate.o := -I.
common-objs-y += powerpc.o emulate.o
@@ -35,7 +36,8 @@ kvm-e500-objs := \
booke_emulate.o \
booke_interrupts.o \
e500.o \
- e500_tlb.o \
+ e500_mmu.o \
+ e500_mmu_host.o \
e500_emulate.o
kvm-objs-$(CONFIG_KVM_E500V2) := $(kvm-e500-objs)
@@ -45,7 +47,8 @@ kvm-e500mc-objs := \
booke_emulate.o \
bookehv_interrupts.o \
e500mc.o \
- e500_tlb.o \
+ e500_mmu.o \
+ e500_mmu_host.o \
e500_emulate.o
kvm-objs-$(CONFIG_KVM_E500MC) := $(kvm-e500mc-objs)
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index d31a716..836c569 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -34,6 +34,8 @@
#define OP_31_XOP_MTSRIN 242
#define OP_31_XOP_TLBIEL 274
#define OP_31_XOP_TLBIE 306
+/* Opcode is officially reserved, reuse it as sc 1 when sc 1 doesn't trap */
+#define OP_31_XOP_FAKE_SC1 308
#define OP_31_XOP_SLBMTE 402
#define OP_31_XOP_SLBIE 434
#define OP_31_XOP_SLBIA 498
@@ -170,6 +172,32 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->arch.mmu.tlbie(vcpu, addr, large);
break;
}
+#ifdef CONFIG_KVM_BOOK3S_64_PR
+ case OP_31_XOP_FAKE_SC1:
+ {
+ /* SC 1 papr hypercalls */
+ ulong cmd = kvmppc_get_gpr(vcpu, 3);
+ int i;
+
+ if ((vcpu->arch.shared->msr & MSR_PR) ||
+ !vcpu->arch.papr_enabled) {
+ emulated = EMULATE_FAIL;
+ break;
+ }
+
+ if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE)
+ break;
+
+ run->papr_hcall.nr = cmd;
+ for (i = 0; i < 9; ++i) {
+ ulong gpr = kvmppc_get_gpr(vcpu, 4 + i);
+ run->papr_hcall.args[i] = gpr;
+ }
+
+ emulated = EMULATE_DO_PAPR;
+ break;
+ }
+#endif
case OP_31_XOP_EIOIO:
break;
case OP_31_XOP_SLBMTE:
@@ -427,6 +455,7 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
case SPRN_PMC3_GEKKO:
case SPRN_PMC4_GEKKO:
case SPRN_WPAR_GEKKO:
+ case SPRN_MSSSR0:
break;
unprivileged:
default:
@@ -523,6 +552,7 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
case SPRN_PMC3_GEKKO:
case SPRN_PMC4_GEKKO:
case SPRN_WPAR_GEKKO:
+ case SPRN_MSSSR0:
*spr_val = 0;
break;
default:
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 71d0c90..80dcc53 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1549,7 +1549,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
mutex_lock(&kvm->slots_lock);
r = -EINVAL;
- if (log->slot >= KVM_MEMORY_SLOTS)
+ if (log->slot >= KVM_USER_MEM_SLOTS)
goto out;
memslot = id_to_memslot(kvm->memslots, log->slot);
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 6702442..5e93438 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -762,6 +762,11 @@ program_interrupt:
run->exit_reason = KVM_EXIT_MMIO;
r = RESUME_HOST_NV;
break;
+ case EMULATE_DO_PAPR:
+ run->exit_reason = KVM_EXIT_PAPR_HCALL;
+ vcpu->arch.hcall_needed = 1;
+ r = RESUME_HOST_NV;
+ break;
default:
BUG();
}
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 69f1140..020923e 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -182,6 +182,14 @@ static void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
}
+static void kvmppc_core_queue_alignment(struct kvm_vcpu *vcpu, ulong dear_flags,
+ ulong esr_flags)
+{
+ vcpu->arch.queued_dear = dear_flags;
+ vcpu->arch.queued_esr = esr_flags;
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALIGNMENT);
+}
+
void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
{
vcpu->arch.queued_esr = esr_flags;
@@ -300,13 +308,22 @@ static void set_guest_esr(struct kvm_vcpu *vcpu, u32 esr)
#endif
}
+static unsigned long get_guest_epr(struct kvm_vcpu *vcpu)
+{
+#ifdef CONFIG_KVM_BOOKE_HV
+ return mfspr(SPRN_GEPR);
+#else
+ return vcpu->arch.epr;
+#endif
+}
+
/* Deliver the interrupt of the corresponding priority, if possible. */
static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
unsigned int priority)
{
int allowed = 0;
ulong msr_mask = 0;
- bool update_esr = false, update_dear = false;
+ bool update_esr = false, update_dear = false, update_epr = false;
ulong crit_raw = vcpu->arch.shared->critical;
ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
bool crit;
@@ -330,9 +347,13 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
keep_irq = true;
}
+ if ((priority == BOOKE_IRQPRIO_EXTERNAL) && vcpu->arch.epr_enabled)
+ update_epr = true;
+
switch (priority) {
case BOOKE_IRQPRIO_DTLB_MISS:
case BOOKE_IRQPRIO_DATA_STORAGE:
+ case BOOKE_IRQPRIO_ALIGNMENT:
update_dear = true;
/* fall through */
case BOOKE_IRQPRIO_INST_STORAGE:
@@ -346,7 +367,6 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
case BOOKE_IRQPRIO_SPE_FP_DATA:
case BOOKE_IRQPRIO_SPE_FP_ROUND:
case BOOKE_IRQPRIO_AP_UNAVAIL:
- case BOOKE_IRQPRIO_ALIGNMENT:
allowed = 1;
msr_mask = MSR_CE | MSR_ME | MSR_DE;
int_class = INT_CLASS_NONCRIT;
@@ -408,6 +428,8 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
set_guest_esr(vcpu, vcpu->arch.queued_esr);
if (update_dear == true)
set_guest_dear(vcpu, vcpu->arch.queued_dear);
+ if (update_epr == true)
+ kvm_make_request(KVM_REQ_EPR_EXIT, vcpu);
new_msr &= msr_mask;
#if defined(CONFIG_64BIT)
@@ -581,6 +603,11 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
kvmppc_core_check_exceptions(vcpu);
+ if (vcpu->requests) {
+ /* Exception delivery raised request; start over */
+ return 1;
+ }
+
if (vcpu->arch.shared->msr & MSR_WE) {
local_irq_enable();
kvm_vcpu_block(vcpu);
@@ -610,6 +637,13 @@ int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
r = 0;
}
+ if (kvm_check_request(KVM_REQ_EPR_EXIT, vcpu)) {
+ vcpu->run->epr.epr = 0;
+ vcpu->arch.epr_needed = true;
+ vcpu->run->exit_reason = KVM_EXIT_EPR;
+ r = 0;
+ }
+
return r;
}
@@ -945,6 +979,12 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
r = RESUME_GUEST;
break;
+ case BOOKE_INTERRUPT_ALIGNMENT:
+ kvmppc_core_queue_alignment(vcpu, vcpu->arch.fault_dear,
+ vcpu->arch.fault_esr);
+ r = RESUME_GUEST;
+ break;
+
#ifdef CONFIG_KVM_BOOKE_HV
case BOOKE_INTERRUPT_HV_SYSCALL:
if (!(vcpu->arch.shared->msr & MSR_PR)) {
@@ -1388,6 +1428,11 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
&vcpu->arch.dbg_reg.dac[dac], sizeof(u64));
break;
}
+ case KVM_REG_PPC_EPR: {
+ u32 epr = get_guest_epr(vcpu);
+ r = put_user(epr, (u32 __user *)(long)reg->addr);
+ break;
+ }
#if defined(CONFIG_64BIT)
case KVM_REG_PPC_EPCR:
r = put_user(vcpu->arch.epcr, (u32 __user *)(long)reg->addr);
@@ -1420,6 +1465,13 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
(u64 __user *)(long)reg->addr, sizeof(u64));
break;
}
+ case KVM_REG_PPC_EPR: {
+ u32 new_epr;
+ r = get_user(new_epr, (u32 __user *)(long)reg->addr);
+ if (!r)
+ kvmppc_set_epr(vcpu, new_epr);
+ break;
+ }
#if defined(CONFIG_64BIT)
case KVM_REG_PPC_EPCR: {
u32 new_epcr;
@@ -1556,7 +1608,9 @@ int __init kvmppc_booke_init(void)
{
#ifndef CONFIG_KVM_BOOKE_HV
unsigned long ivor[16];
+ unsigned long *handler = kvmppc_booke_handler_addr;
unsigned long max_ivor = 0;
+ unsigned long handler_len;
int i;
/* We install our own exception handlers by hijacking IVPR. IVPR must
@@ -1589,14 +1643,16 @@ int __init kvmppc_booke_init(void)
for (i = 0; i < 16; i++) {
if (ivor[i] > max_ivor)
- max_ivor = ivor[i];
+ max_ivor = i;
+ handler_len = handler[i + 1] - handler[i];
memcpy((void *)kvmppc_booke_handlers + ivor[i],
- kvmppc_handlers_start + i * kvmppc_handler_len,
- kvmppc_handler_len);
+ (void *)handler[i], handler_len);
}
- flush_icache_range(kvmppc_booke_handlers,
- kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
+
+ handler_len = handler[max_ivor + 1] - handler[max_ivor];
+ flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers +
+ ivor[max_ivor] + handler_len);
#endif /* !BOOKE_HV */
return 0;
}
diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h
index e9b88e4..5fd1ba6 100644
--- a/arch/powerpc/kvm/booke.h
+++ b/arch/powerpc/kvm/booke.h
@@ -65,6 +65,7 @@
(1 << BOOKE_IRQPRIO_CRITICAL))
extern unsigned long kvmppc_booke_handlers;
+extern unsigned long kvmppc_booke_handler_addr[];
void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr);
void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr);
diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c
index 4685b8c..27a4b28 100644
--- a/arch/powerpc/kvm/booke_emulate.c
+++ b/arch/powerpc/kvm/booke_emulate.c
@@ -269,6 +269,9 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
case SPRN_ESR:
*spr_val = vcpu->arch.shared->esr;
break;
+ case SPRN_EPR:
+ *spr_val = vcpu->arch.epr;
+ break;
case SPRN_CSRR0:
*spr_val = vcpu->arch.csrr0;
break;
diff --git a/arch/powerpc/kvm/booke_interrupts.S b/arch/powerpc/kvm/booke_interrupts.S
index bb46b32..f4bb55c 100644
--- a/arch/powerpc/kvm/booke_interrupts.S
+++ b/arch/powerpc/kvm/booke_interrupts.S
@@ -45,18 +45,21 @@
(1<<BOOKE_INTERRUPT_DEBUG))
#define NEED_DEAR_MASK ((1<<BOOKE_INTERRUPT_DATA_STORAGE) | \
- (1<<BOOKE_INTERRUPT_DTLB_MISS))
+ (1<<BOOKE_INTERRUPT_DTLB_MISS) | \
+ (1<<BOOKE_INTERRUPT_ALIGNMENT))
#define NEED_ESR_MASK ((1<<BOOKE_INTERRUPT_DATA_STORAGE) | \
(1<<BOOKE_INTERRUPT_INST_STORAGE) | \
(1<<BOOKE_INTERRUPT_PROGRAM) | \
- (1<<BOOKE_INTERRUPT_DTLB_MISS))
+ (1<<BOOKE_INTERRUPT_DTLB_MISS) | \
+ (1<<BOOKE_INTERRUPT_ALIGNMENT))
.macro KVM_HANDLER ivor_nr scratch srr0
_GLOBAL(kvmppc_handler_\ivor_nr)
/* Get pointer to vcpu and record exit number. */
mtspr \scratch , r4
- mfspr r4, SPRN_SPRG_RVCPU
+ mfspr r4, SPRN_SPRG_THREAD
+ lwz r4, THREAD_KVM_VCPU(r4)
stw r3, VCPU_GPR(R3)(r4)
stw r5, VCPU_GPR(R5)(r4)
stw r6, VCPU_GPR(R6)(r4)
@@ -73,6 +76,14 @@ _GLOBAL(kvmppc_handler_\ivor_nr)
bctr
.endm
+.macro KVM_HANDLER_ADDR ivor_nr
+ .long kvmppc_handler_\ivor_nr
+.endm
+
+.macro KVM_HANDLER_END
+ .long kvmppc_handlers_end
+.endm
+
_GLOBAL(kvmppc_handlers_start)
KVM_HANDLER BOOKE_INTERRUPT_CRITICAL SPRN_SPRG_RSCRATCH_CRIT SPRN_CSRR0
KVM_HANDLER BOOKE_INTERRUPT_MACHINE_CHECK SPRN_SPRG_RSCRATCH_MC SPRN_MCSRR0
@@ -93,9 +104,7 @@ KVM_HANDLER BOOKE_INTERRUPT_DEBUG SPRN_SPRG_RSCRATCH_CRIT SPRN_CSRR0
KVM_HANDLER BOOKE_INTERRUPT_SPE_UNAVAIL SPRN_SPRG_RSCRATCH0 SPRN_SRR0
KVM_HANDLER BOOKE_INTERRUPT_SPE_FP_DATA SPRN_SPRG_RSCRATCH0 SPRN_SRR0
KVM_HANDLER BOOKE_INTERRUPT_SPE_FP_ROUND SPRN_SPRG_RSCRATCH0 SPRN_SRR0
-
-_GLOBAL(kvmppc_handler_len)
- .long kvmppc_handler_1 - kvmppc_handler_0
+_GLOBAL(kvmppc_handlers_end)
/* Registers:
* SPRG_SCRATCH0: guest r4
@@ -402,9 +411,6 @@ lightweight_exit:
lwz r8, kvmppc_booke_handlers@l(r8)
mtspr SPRN_IVPR, r8
- /* Save vcpu pointer for the exception handlers. */
- mtspr SPRN_SPRG_WVCPU, r4
-
lwz r5, VCPU_SHARED(r4)
/* Can't switch the stack pointer until after IVPR is switched,
@@ -463,6 +469,31 @@ lightweight_exit:
lwz r4, VCPU_GPR(R4)(r4)
rfi
+ .data
+ .align 4
+ .globl kvmppc_booke_handler_addr
+kvmppc_booke_handler_addr:
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_CRITICAL
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_MACHINE_CHECK
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_DATA_STORAGE
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_INST_STORAGE
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_EXTERNAL
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_ALIGNMENT
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_PROGRAM
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_FP_UNAVAIL
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_SYSCALL
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_AP_UNAVAIL
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_DECREMENTER
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_FIT
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_WATCHDOG
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_DTLB_MISS
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_ITLB_MISS
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_DEBUG
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_SPE_UNAVAIL
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_SPE_FP_DATA
+KVM_HANDLER_ADDR BOOKE_INTERRUPT_SPE_FP_ROUND
+KVM_HANDLER_END /*Always keep this in end*/
+
#ifdef CONFIG_SPE
_GLOBAL(kvmppc_save_guest_spe)
cmpi 0,r3,0
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index b479ed7..6dd4de7 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -491,6 +491,9 @@ static int __init kvmppc_e500_init(void)
{
int r, i;
unsigned long ivor[3];
+ /* Process remaining handlers above the generic first 16 */
+ unsigned long *handler = &kvmppc_booke_handler_addr[16];
+ unsigned long handler_len;
unsigned long max_ivor = 0;
r = kvmppc_core_check_processor_compat();
@@ -506,15 +509,16 @@ static int __init kvmppc_e500_init(void)
ivor[1] = mfspr(SPRN_IVOR33);
ivor[2] = mfspr(SPRN_IVOR34);
for (i = 0; i < 3; i++) {
- if (ivor[i] > max_ivor)
- max_ivor = ivor[i];
+ if (ivor[i] > ivor[max_ivor])
+ max_ivor = i;
+ handler_len = handler[i + 1] - handler[i];
memcpy((void *)kvmppc_booke_handlers + ivor[i],
- kvmppc_handlers_start + (i + 16) * kvmppc_handler_len,
- kvmppc_handler_len);
+ (void *)handler[i], handler_len);
}
- flush_icache_range(kvmppc_booke_handlers,
- kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
+ handler_len = handler[max_ivor + 1] - handler[max_ivor];
+ flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers +
+ ivor[max_ivor] + handler_len);
return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE);
}
diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h
index c70d37e..41cefd4 100644
--- a/arch/powerpc/kvm/e500.h
+++ b/arch/powerpc/kvm/e500.h
@@ -28,6 +28,7 @@
#define E500_TLB_VALID 1
#define E500_TLB_BITMAP 2
+#define E500_TLB_TLB0 (1 << 2)
struct tlbe_ref {
pfn_t pfn;
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_mmu.c
index cf3f180..5c44759 100644
--- a/arch/powerpc/kvm/e500_tlb.c
+++ b/arch/powerpc/kvm/e500_mmu.c
@@ -1,10 +1,11 @@
/*
- * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
+ * Copyright (C) 2008-2013 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: Yu Liu, yu.liu@freescale.com
* Scott Wood, scottwood@freescale.com
* Ashish Kalra, ashish.kalra@freescale.com
* Varun Sethi, varun.sethi@freescale.com
+ * Alexander Graf, agraf@suse.de
*
* Description:
* This file is based on arch/powerpc/kvm/44x_tlb.c,
@@ -33,10 +34,7 @@
#include "e500.h"
#include "trace.h"
#include "timing.h"
-
-#define to_htlb1_esel(esel) (host_tlb_params[1].entries - (esel) - 1)
-
-static struct kvmppc_e500_tlb_params host_tlb_params[E500_TLB_NUM];
+#include "e500_mmu_host.h"
static inline unsigned int gtlb0_get_next_victim(
struct kvmppc_vcpu_e500 *vcpu_e500)
@@ -50,174 +48,6 @@ static inline unsigned int gtlb0_get_next_victim(
return victim;
}
-static inline unsigned int tlb1_max_shadow_size(void)
-{
- /* reserve one entry for magic page */
- return host_tlb_params[1].entries - tlbcam_index - 1;
-}
-
-static inline int tlbe_is_writable(struct kvm_book3e_206_tlb_entry *tlbe)
-{
- return tlbe->mas7_3 & (MAS3_SW|MAS3_UW);
-}
-
-static inline u32 e500_shadow_mas3_attrib(u32 mas3, int usermode)
-{
- /* Mask off reserved bits. */
- mas3 &= MAS3_ATTRIB_MASK;
-
-#ifndef CONFIG_KVM_BOOKE_HV
- if (!usermode) {
- /* Guest is in supervisor mode,
- * so we need to translate guest
- * supervisor permissions into user permissions. */
- mas3 &= ~E500_TLB_USER_PERM_MASK;
- mas3 |= (mas3 & E500_TLB_SUPER_PERM_MASK) << 1;
- }
- mas3 |= E500_TLB_SUPER_PERM_MASK;
-#endif
- return mas3;
-}
-
-static inline u32 e500_shadow_mas2_attrib(u32 mas2, int usermode)
-{
-#ifdef CONFIG_SMP
- return (mas2 & MAS2_ATTRIB_MASK) | MAS2_M;
-#else
- return mas2 & MAS2_ATTRIB_MASK;
-#endif
-}
-
-/*
- * writing shadow tlb entry to host TLB
- */
-static inline void __write_host_tlbe(struct kvm_book3e_206_tlb_entry *stlbe,
- uint32_t mas0)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- mtspr(SPRN_MAS0, mas0);
- mtspr(SPRN_MAS1, stlbe->mas1);
- mtspr(SPRN_MAS2, (unsigned long)stlbe->mas2);
- mtspr(SPRN_MAS3, (u32)stlbe->mas7_3);
- mtspr(SPRN_MAS7, (u32)(stlbe->mas7_3 >> 32));
-#ifdef CONFIG_KVM_BOOKE_HV
- mtspr(SPRN_MAS8, stlbe->mas8);
-#endif
- asm volatile("isync; tlbwe" : : : "memory");
-
-#ifdef CONFIG_KVM_BOOKE_HV
- /* Must clear mas8 for other host tlbwe's */
- mtspr(SPRN_MAS8, 0);
- isync();
-#endif
- local_irq_restore(flags);
-
- trace_kvm_booke206_stlb_write(mas0, stlbe->mas8, stlbe->mas1,
- stlbe->mas2, stlbe->mas7_3);
-}
-
-/*
- * Acquire a mas0 with victim hint, as if we just took a TLB miss.
- *
- * We don't care about the address we're searching for, other than that it's
- * in the right set and is not present in the TLB. Using a zero PID and a
- * userspace address means we don't have to set and then restore MAS5, or
- * calculate a proper MAS6 value.
- */
-static u32 get_host_mas0(unsigned long eaddr)
-{
- unsigned long flags;
- u32 mas0;
-
- local_irq_save(flags);
- mtspr(SPRN_MAS6, 0);
- asm volatile("tlbsx 0, %0" : : "b" (eaddr & ~CONFIG_PAGE_OFFSET));
- mas0 = mfspr(SPRN_MAS0);
- local_irq_restore(flags);
-
- return mas0;
-}
-
-/* sesel is for tlb1 only */
-static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
- int tlbsel, int sesel, struct kvm_book3e_206_tlb_entry *stlbe)
-{
- u32 mas0;
-
- if (tlbsel == 0) {
- mas0 = get_host_mas0(stlbe->mas2);
- __write_host_tlbe(stlbe, mas0);
- } else {
- __write_host_tlbe(stlbe,
- MAS0_TLBSEL(1) |
- MAS0_ESEL(to_htlb1_esel(sesel)));
- }
-}
-
-#ifdef CONFIG_KVM_E500V2
-void kvmppc_map_magic(struct kvm_vcpu *vcpu)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct kvm_book3e_206_tlb_entry magic;
- ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
- unsigned int stid;
- pfn_t pfn;
-
- pfn = (pfn_t)virt_to_phys((void *)shared_page) >> PAGE_SHIFT;
- get_page(pfn_to_page(pfn));
-
- preempt_disable();
- stid = kvmppc_e500_get_sid(vcpu_e500, 0, 0, 0, 0);
-
- magic.mas1 = MAS1_VALID | MAS1_TS | MAS1_TID(stid) |
- MAS1_TSIZE(BOOK3E_PAGESZ_4K);
- magic.mas2 = vcpu->arch.magic_page_ea | MAS2_M;
- magic.mas7_3 = ((u64)pfn << PAGE_SHIFT) |
- MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR;
- magic.mas8 = 0;
-
- __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index));
- preempt_enable();
-}
-#endif
-
-static void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500,
- int tlbsel, int esel)
-{
- struct kvm_book3e_206_tlb_entry *gtlbe =
- get_entry(vcpu_e500, tlbsel, esel);
-
- if (tlbsel == 1 &&
- vcpu_e500->gtlb_priv[1][esel].ref.flags & E500_TLB_BITMAP) {
- u64 tmp = vcpu_e500->g2h_tlb1_map[esel];
- int hw_tlb_indx;
- unsigned long flags;
-
- local_irq_save(flags);
- while (tmp) {
- hw_tlb_indx = __ilog2_u64(tmp & -tmp);
- mtspr(SPRN_MAS0,
- MAS0_TLBSEL(1) |
- MAS0_ESEL(to_htlb1_esel(hw_tlb_indx)));
- mtspr(SPRN_MAS1, 0);
- asm volatile("tlbwe");
- vcpu_e500->h2g_tlb1_rmap[hw_tlb_indx] = 0;
- tmp &= tmp - 1;
- }
- mb();
- vcpu_e500->g2h_tlb1_map[esel] = 0;
- vcpu_e500->gtlb_priv[1][esel].ref.flags &= ~E500_TLB_BITMAP;
- local_irq_restore(flags);
-
- return;
- }
-
- /* Guest tlbe is backed by at most one host tlbe per shadow pid. */
- kvmppc_e500_tlbil_one(vcpu_e500, gtlbe);
-}
-
static int tlb0_set_base(gva_t addr, int sets, int ways)
{
int set_base;
@@ -296,70 +126,6 @@ static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500,
return -1;
}
-static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref,
- struct kvm_book3e_206_tlb_entry *gtlbe,
- pfn_t pfn)
-{
- ref->pfn = pfn;
- ref->flags = E500_TLB_VALID;
-
- if (tlbe_is_writable(gtlbe))
- kvm_set_pfn_dirty(pfn);
-}
-
-static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref)
-{
- if (ref->flags & E500_TLB_VALID) {
- trace_kvm_booke206_ref_release(ref->pfn, ref->flags);
- ref->flags = 0;
- }
-}
-
-static void clear_tlb1_bitmap(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- if (vcpu_e500->g2h_tlb1_map)
- memset(vcpu_e500->g2h_tlb1_map, 0,
- sizeof(u64) * vcpu_e500->gtlb_params[1].entries);
- if (vcpu_e500->h2g_tlb1_rmap)
- memset(vcpu_e500->h2g_tlb1_rmap, 0,
- sizeof(unsigned int) * host_tlb_params[1].entries);
-}
-
-static void clear_tlb_privs(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- int tlbsel = 0;
- int i;
-
- for (i = 0; i < vcpu_e500->gtlb_params[tlbsel].entries; i++) {
- struct tlbe_ref *ref =
- &vcpu_e500->gtlb_priv[tlbsel][i].ref;
- kvmppc_e500_ref_release(ref);
- }
-}
-
-static void clear_tlb_refs(struct kvmppc_vcpu_e500 *vcpu_e500)
-{
- int stlbsel = 1;
- int i;
-
- kvmppc_e500_tlbil_all(vcpu_e500);
-
- for (i = 0; i < host_tlb_params[stlbsel].entries; i++) {
- struct tlbe_ref *ref =
- &vcpu_e500->tlb_refs[stlbsel][i];
- kvmppc_e500_ref_release(ref);
- }
-
- clear_tlb_privs(vcpu_e500);
-}
-
-void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- clear_tlb_refs(vcpu_e500);
- clear_tlb1_bitmap(vcpu_e500);
-}
-
static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu,
unsigned int eaddr, int as)
{
@@ -385,216 +151,6 @@ static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu,
| (as ? MAS6_SAS : 0);
}
-/* TID must be supplied by the caller */
-static inline void kvmppc_e500_setup_stlbe(
- struct kvm_vcpu *vcpu,
- struct kvm_book3e_206_tlb_entry *gtlbe,
- int tsize, struct tlbe_ref *ref, u64 gvaddr,
- struct kvm_book3e_206_tlb_entry *stlbe)
-{
- pfn_t pfn = ref->pfn;
- u32 pr = vcpu->arch.shared->msr & MSR_PR;
-
- BUG_ON(!(ref->flags & E500_TLB_VALID));
-
- /* Force IPROT=0 for all guest mappings. */
- stlbe->mas1 = MAS1_TSIZE(tsize) | get_tlb_sts(gtlbe) | MAS1_VALID;
- stlbe->mas2 = (gvaddr & MAS2_EPN) |
- e500_shadow_mas2_attrib(gtlbe->mas2, pr);
- stlbe->mas7_3 = ((u64)pfn << PAGE_SHIFT) |
- e500_shadow_mas3_attrib(gtlbe->mas7_3, pr);
-
-#ifdef CONFIG_KVM_BOOKE_HV
- stlbe->mas8 = MAS8_TGS | vcpu->kvm->arch.lpid;
-#endif
-}
-
-static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
- u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe,
- int tlbsel, struct kvm_book3e_206_tlb_entry *stlbe,
- struct tlbe_ref *ref)
-{
- struct kvm_memory_slot *slot;
- unsigned long pfn = 0; /* silence GCC warning */
- unsigned long hva;
- int pfnmap = 0;
- int tsize = BOOK3E_PAGESZ_4K;
-
- /*
- * Translate guest physical to true physical, acquiring
- * a page reference if it is normal, non-reserved memory.
- *
- * gfn_to_memslot() must succeed because otherwise we wouldn't
- * have gotten this far. Eventually we should just pass the slot
- * pointer through from the first lookup.
- */
- slot = gfn_to_memslot(vcpu_e500->vcpu.kvm, gfn);
- hva = gfn_to_hva_memslot(slot, gfn);
-
- if (tlbsel == 1) {
- struct vm_area_struct *vma;
- down_read(&current->mm->mmap_sem);
-
- vma = find_vma(current->mm, hva);
- if (vma && hva >= vma->vm_start &&
- (vma->vm_flags & VM_PFNMAP)) {
- /*
- * This VMA is a physically contiguous region (e.g.
- * /dev/mem) that bypasses normal Linux page
- * management. Find the overlap between the
- * vma and the memslot.
- */
-
- unsigned long start, end;
- unsigned long slot_start, slot_end;
-
- pfnmap = 1;
-
- start = vma->vm_pgoff;
- end = start +
- ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT);
-
- pfn = start + ((hva - vma->vm_start) >> PAGE_SHIFT);
-
- slot_start = pfn - (gfn - slot->base_gfn);
- slot_end = slot_start + slot->npages;
-
- if (start < slot_start)
- start = slot_start;
- if (end > slot_end)
- end = slot_end;
-
- tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >>
- MAS1_TSIZE_SHIFT;
-
- /*
- * e500 doesn't implement the lowest tsize bit,
- * or 1K pages.
- */
- tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
-
- /*
- * Now find the largest tsize (up to what the guest
- * requested) that will cover gfn, stay within the
- * range, and for which gfn and pfn are mutually
- * aligned.
- */
-
- for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) {
- unsigned long gfn_start, gfn_end, tsize_pages;
- tsize_pages = 1 << (tsize - 2);
-
- gfn_start = gfn & ~(tsize_pages - 1);
- gfn_end = gfn_start + tsize_pages;
-
- if (gfn_start + pfn - gfn < start)
- continue;
- if (gfn_end + pfn - gfn > end)
- continue;
- if ((gfn & (tsize_pages - 1)) !=
- (pfn & (tsize_pages - 1)))
- continue;
-
- gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1);
- pfn &= ~(tsize_pages - 1);
- break;
- }
- } else if (vma && hva >= vma->vm_start &&
- (vma->vm_flags & VM_HUGETLB)) {
- unsigned long psize = vma_kernel_pagesize(vma);
-
- tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >>
- MAS1_TSIZE_SHIFT;
-
- /*
- * Take the largest page size that satisfies both host
- * and guest mapping
- */
- tsize = min(__ilog2(psize) - 10, tsize);
-
- /*
- * e500 doesn't implement the lowest tsize bit,
- * or 1K pages.
- */
- tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
- }
-
- up_read(&current->mm->mmap_sem);
- }
-
- if (likely(!pfnmap)) {
- unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT);
- pfn = gfn_to_pfn_memslot(slot, gfn);
- if (is_error_noslot_pfn(pfn)) {
- printk(KERN_ERR "Couldn't get real page for gfn %lx!\n",
- (long)gfn);
- return;
- }
-
- /* Align guest and physical address to page map boundaries */
- pfn &= ~(tsize_pages - 1);
- gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1);
- }
-
- /* Drop old ref and setup new one. */
- kvmppc_e500_ref_release(ref);
- kvmppc_e500_ref_setup(ref, gtlbe, pfn);
-
- kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize,
- ref, gvaddr, stlbe);
-
- /* Clear i-cache for new pages */
- kvmppc_mmu_flush_icache(pfn);
-
- /* Drop refcount on page, so that mmu notifiers can clear it */
- kvm_release_pfn_clean(pfn);
-}
-
-/* XXX only map the one-one case, for now use TLB0 */
-static void kvmppc_e500_tlb0_map(struct kvmppc_vcpu_e500 *vcpu_e500,
- int esel,
- struct kvm_book3e_206_tlb_entry *stlbe)
-{
- struct kvm_book3e_206_tlb_entry *gtlbe;
- struct tlbe_ref *ref;
-
- gtlbe = get_entry(vcpu_e500, 0, esel);
- ref = &vcpu_e500->gtlb_priv[0][esel].ref;
-
- kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe),
- get_tlb_raddr(gtlbe) >> PAGE_SHIFT,
- gtlbe, 0, stlbe, ref);
-}
-
-/* Caller must ensure that the specified guest TLB entry is safe to insert into
- * the shadow TLB. */
-/* XXX for both one-one and one-to-many , for now use TLB1 */
-static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
- u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe,
- struct kvm_book3e_206_tlb_entry *stlbe, int esel)
-{
- struct tlbe_ref *ref;
- unsigned int victim;
-
- victim = vcpu_e500->host_tlb1_nv++;
-
- if (unlikely(vcpu_e500->host_tlb1_nv >= tlb1_max_shadow_size()))
- vcpu_e500->host_tlb1_nv = 0;
-
- ref = &vcpu_e500->tlb_refs[1][victim];
- kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, stlbe, ref);
-
- vcpu_e500->g2h_tlb1_map[esel] |= (u64)1 << victim;
- vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_BITMAP;
- if (vcpu_e500->h2g_tlb1_rmap[victim]) {
- unsigned int idx = vcpu_e500->h2g_tlb1_rmap[victim];
- vcpu_e500->g2h_tlb1_map[idx] &= ~(1ULL << victim);
- }
- vcpu_e500->h2g_tlb1_rmap[victim] = esel;
-
- return victim;
-}
-
static void kvmppc_recalc_tlb1map_range(struct kvmppc_vcpu_e500 *vcpu_e500)
{
int size = vcpu_e500->gtlb_params[1].entries;
@@ -683,8 +239,8 @@ int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value)
for (esel = 0; esel < vcpu_e500->gtlb_params[1].entries; esel++)
kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel);
- /* Invalidate all vcpu id mappings */
- kvmppc_e500_tlbil_all(vcpu_e500);
+ /* Invalidate all host shadow mappings */
+ kvmppc_core_flush_tlb(&vcpu_e500->vcpu);
return EMULATE_DONE;
}
@@ -713,8 +269,8 @@ int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, gva_t ea)
kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
}
- /* Invalidate all vcpu id mappings */
- kvmppc_e500_tlbil_all(vcpu_e500);
+ /* Invalidate all host shadow mappings */
+ kvmppc_core_flush_tlb(&vcpu_e500->vcpu);
return EMULATE_DONE;
}
@@ -834,27 +390,11 @@ int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, gva_t ea)
return EMULATE_DONE;
}
-/* sesel is for tlb1 only */
-static void write_stlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
- struct kvm_book3e_206_tlb_entry *gtlbe,
- struct kvm_book3e_206_tlb_entry *stlbe,
- int stlbsel, int sesel)
-{
- int stid;
-
- preempt_disable();
- stid = kvmppc_e500_get_tlb_stid(&vcpu_e500->vcpu, gtlbe);
-
- stlbe->mas1 |= MAS1_TID(stid);
- write_host_tlbe(vcpu_e500, stlbsel, sesel, stlbe);
- preempt_enable();
-}
-
int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct kvm_book3e_206_tlb_entry *gtlbe, stlbe;
- int tlbsel, esel, stlbsel, sesel;
+ struct kvm_book3e_206_tlb_entry *gtlbe;
+ int tlbsel, esel;
int recal = 0;
tlbsel = get_tlb_tlbsel(vcpu);
@@ -892,40 +432,16 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
/* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */
if (tlbe_is_host_safe(vcpu, gtlbe)) {
- u64 eaddr;
- u64 raddr;
+ u64 eaddr = get_tlb_eaddr(gtlbe);
+ u64 raddr = get_tlb_raddr(gtlbe);
- switch (tlbsel) {
- case 0:
- /* TLB0 */
+ if (tlbsel == 0) {
gtlbe->mas1 &= ~MAS1_TSIZE(~0);
gtlbe->mas1 |= MAS1_TSIZE(BOOK3E_PAGESZ_4K);
-
- stlbsel = 0;
- kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
- sesel = 0; /* unused */
-
- break;
-
- case 1:
- /* TLB1 */
- eaddr = get_tlb_eaddr(gtlbe);
- raddr = get_tlb_raddr(gtlbe);
-
- /* Create a 4KB mapping on the host.
- * If the guest wanted a large page,
- * only the first 4KB is mapped here and the rest
- * are mapped on the fly. */
- stlbsel = 1;
- sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr,
- raddr >> PAGE_SHIFT, gtlbe, &stlbe, esel);
- break;
-
- default:
- BUG();
}
- write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel);
+ /* Premap the faulting page */
+ kvmppc_mmu_map(vcpu, eaddr, raddr, index_of(tlbsel, esel));
}
kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS);
@@ -1019,100 +535,14 @@ void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
{
}
-void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
- unsigned int index)
-{
- struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
- struct tlbe_priv *priv;
- struct kvm_book3e_206_tlb_entry *gtlbe, stlbe;
- int tlbsel = tlbsel_of(index);
- int esel = esel_of(index);
- int stlbsel, sesel;
-
- gtlbe = get_entry(vcpu_e500, tlbsel, esel);
-
- switch (tlbsel) {
- case 0:
- stlbsel = 0;
- sesel = 0; /* unused */
- priv = &vcpu_e500->gtlb_priv[tlbsel][esel];
-
- /* Only triggers after clear_tlb_refs */
- if (unlikely(!(priv->ref.flags & E500_TLB_VALID)))
- kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
- else
- kvmppc_e500_setup_stlbe(vcpu, gtlbe, BOOK3E_PAGESZ_4K,
- &priv->ref, eaddr, &stlbe);
- break;
-
- case 1: {
- gfn_t gfn = gpaddr >> PAGE_SHIFT;
-
- stlbsel = 1;
- sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn,
- gtlbe, &stlbe, esel);
- break;
- }
-
- default:
- BUG();
- break;
- }
-
- write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel);
-}
-
-/************* MMU Notifiers *************/
-
-int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
-{
- trace_kvm_unmap_hva(hva);
-
- /*
- * Flush all shadow tlb entries everywhere. This is slow, but
- * we are 100% sure that we catch the to be unmapped page
- */
- kvm_flush_remote_tlbs(kvm);
-
- return 0;
-}
-
-int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
-{
- /* kvm_unmap_hva flushes everything anyways */
- kvm_unmap_hva(kvm, start);
-
- return 0;
-}
-
-int kvm_age_hva(struct kvm *kvm, unsigned long hva)
-{
- /* XXX could be more clever ;) */
- return 0;
-}
-
-int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
-{
- /* XXX could be more clever ;) */
- return 0;
-}
-
-void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
-{
- /* The page will get remapped properly on its next fault */
- kvm_unmap_hva(kvm, hva);
-}
-
/*****************************************/
static void free_gtlb(struct kvmppc_vcpu_e500 *vcpu_e500)
{
int i;
- clear_tlb1_bitmap(vcpu_e500);
+ kvmppc_core_flush_tlb(&vcpu_e500->vcpu);
kfree(vcpu_e500->g2h_tlb1_map);
-
- clear_tlb_refs(vcpu_e500);
kfree(vcpu_e500->gtlb_priv[0]);
kfree(vcpu_e500->gtlb_priv[1]);
@@ -1303,7 +733,7 @@ int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
kvmppc_recalc_tlb1map_range(vcpu_e500);
- clear_tlb_refs(vcpu_e500);
+ kvmppc_core_flush_tlb(vcpu);
return 0;
}
@@ -1313,37 +743,8 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
int entry_size = sizeof(struct kvm_book3e_206_tlb_entry);
int entries = KVM_E500_TLB0_SIZE + KVM_E500_TLB1_SIZE;
- host_tlb_params[0].entries = mfspr(SPRN_TLB0CFG) & TLBnCFG_N_ENTRY;
- host_tlb_params[1].entries = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY;
-
- /*
- * This should never happen on real e500 hardware, but is
- * architecturally possible -- e.g. in some weird nested
- * virtualization case.
- */
- if (host_tlb_params[0].entries == 0 ||
- host_tlb_params[1].entries == 0) {
- pr_err("%s: need to know host tlb size\n", __func__);
- return -ENODEV;
- }
-
- host_tlb_params[0].ways = (mfspr(SPRN_TLB0CFG) & TLBnCFG_ASSOC) >>
- TLBnCFG_ASSOC_SHIFT;
- host_tlb_params[1].ways = host_tlb_params[1].entries;
-
- if (!is_power_of_2(host_tlb_params[0].entries) ||
- !is_power_of_2(host_tlb_params[0].ways) ||
- host_tlb_params[0].entries < host_tlb_params[0].ways ||
- host_tlb_params[0].ways == 0) {
- pr_err("%s: bad tlb0 host config: %u entries %u ways\n",
- __func__, host_tlb_params[0].entries,
- host_tlb_params[0].ways);
- return -ENODEV;
- }
-
- host_tlb_params[0].sets =
- host_tlb_params[0].entries / host_tlb_params[0].ways;
- host_tlb_params[1].sets = 1;
+ if (e500_mmu_host_init(vcpu_e500))
+ goto err;
vcpu_e500->gtlb_params[0].entries = KVM_E500_TLB0_SIZE;
vcpu_e500->gtlb_params[1].entries = KVM_E500_TLB1_SIZE;
@@ -1362,18 +763,6 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
vcpu_e500->gtlb_offset[0] = 0;
vcpu_e500->gtlb_offset[1] = KVM_E500_TLB0_SIZE;
- vcpu_e500->tlb_refs[0] =
- kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[0].entries,
- GFP_KERNEL);
- if (!vcpu_e500->tlb_refs[0])
- goto err;
-
- vcpu_e500->tlb_refs[1] =
- kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[1].entries,
- GFP_KERNEL);
- if (!vcpu_e500->tlb_refs[1])
- goto err;
-
vcpu_e500->gtlb_priv[0] = kzalloc(sizeof(struct tlbe_ref) *
vcpu_e500->gtlb_params[0].entries,
GFP_KERNEL);
@@ -1392,12 +781,6 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
if (!vcpu_e500->g2h_tlb1_map)
goto err;
- vcpu_e500->h2g_tlb1_rmap = kzalloc(sizeof(unsigned int) *
- host_tlb_params[1].entries,
- GFP_KERNEL);
- if (!vcpu_e500->h2g_tlb1_rmap)
- goto err;
-
/* Init TLB configuration register */
vcpu->arch.tlbcfg[0] = mfspr(SPRN_TLB0CFG) &
~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC);
@@ -1416,15 +799,11 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
err:
free_gtlb(vcpu_e500);
- kfree(vcpu_e500->tlb_refs[0]);
- kfree(vcpu_e500->tlb_refs[1]);
return -1;
}
void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500)
{
free_gtlb(vcpu_e500);
- kfree(vcpu_e500->h2g_tlb1_rmap);
- kfree(vcpu_e500->tlb_refs[0]);
- kfree(vcpu_e500->tlb_refs[1]);
+ e500_mmu_host_uninit(vcpu_e500);
}
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
new file mode 100644
index 0000000..a222edf
--- /dev/null
+++ b/arch/powerpc/kvm/e500_mmu_host.c
@@ -0,0 +1,699 @@
+/*
+ * Copyright (C) 2008-2013 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Yu Liu, yu.liu@freescale.com
+ * Scott Wood, scottwood@freescale.com
+ * Ashish Kalra, ashish.kalra@freescale.com
+ * Varun Sethi, varun.sethi@freescale.com
+ * Alexander Graf, agraf@suse.de
+ *
+ * Description:
+ * This file is based on arch/powerpc/kvm/44x_tlb.c,
+ * by Hollis Blanchard <hollisb@us.ibm.com>.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/kvm.h>
+#include <linux/kvm_host.h>
+#include <linux/highmem.h>
+#include <linux/log2.h>
+#include <linux/uaccess.h>
+#include <linux/sched.h>
+#include <linux/rwsem.h>
+#include <linux/vmalloc.h>
+#include <linux/hugetlb.h>
+#include <asm/kvm_ppc.h>
+
+#include "e500.h"
+#include "trace.h"
+#include "timing.h"
+#include "e500_mmu_host.h"
+
+#define to_htlb1_esel(esel) (host_tlb_params[1].entries - (esel) - 1)
+
+static struct kvmppc_e500_tlb_params host_tlb_params[E500_TLB_NUM];
+
+static inline unsigned int tlb1_max_shadow_size(void)
+{
+ /* reserve one entry for magic page */
+ return host_tlb_params[1].entries - tlbcam_index - 1;
+}
+
+static inline u32 e500_shadow_mas3_attrib(u32 mas3, int usermode)
+{
+ /* Mask off reserved bits. */
+ mas3 &= MAS3_ATTRIB_MASK;
+
+#ifndef CONFIG_KVM_BOOKE_HV
+ if (!usermode) {
+ /* Guest is in supervisor mode,
+ * so we need to translate guest
+ * supervisor permissions into user permissions. */
+ mas3 &= ~E500_TLB_USER_PERM_MASK;
+ mas3 |= (mas3 & E500_TLB_SUPER_PERM_MASK) << 1;
+ }
+ mas3 |= E500_TLB_SUPER_PERM_MASK;
+#endif
+ return mas3;
+}
+
+static inline u32 e500_shadow_mas2_attrib(u32 mas2, int usermode)
+{
+#ifdef CONFIG_SMP
+ return (mas2 & MAS2_ATTRIB_MASK) | MAS2_M;
+#else
+ return mas2 & MAS2_ATTRIB_MASK;
+#endif
+}
+
+/*
+ * writing shadow tlb entry to host TLB
+ */
+static inline void __write_host_tlbe(struct kvm_book3e_206_tlb_entry *stlbe,
+ uint32_t mas0)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ mtspr(SPRN_MAS0, mas0);
+ mtspr(SPRN_MAS1, stlbe->mas1);
+ mtspr(SPRN_MAS2, (unsigned long)stlbe->mas2);
+ mtspr(SPRN_MAS3, (u32)stlbe->mas7_3);
+ mtspr(SPRN_MAS7, (u32)(stlbe->mas7_3 >> 32));
+#ifdef CONFIG_KVM_BOOKE_HV
+ mtspr(SPRN_MAS8, stlbe->mas8);
+#endif
+ asm volatile("isync; tlbwe" : : : "memory");
+
+#ifdef CONFIG_KVM_BOOKE_HV
+ /* Must clear mas8 for other host tlbwe's */
+ mtspr(SPRN_MAS8, 0);
+ isync();
+#endif
+ local_irq_restore(flags);
+
+ trace_kvm_booke206_stlb_write(mas0, stlbe->mas8, stlbe->mas1,
+ stlbe->mas2, stlbe->mas7_3);
+}
+
+/*
+ * Acquire a mas0 with victim hint, as if we just took a TLB miss.
+ *
+ * We don't care about the address we're searching for, other than that it's
+ * in the right set and is not present in the TLB. Using a zero PID and a
+ * userspace address means we don't have to set and then restore MAS5, or
+ * calculate a proper MAS6 value.
+ */
+static u32 get_host_mas0(unsigned long eaddr)
+{
+ unsigned long flags;
+ u32 mas0;
+
+ local_irq_save(flags);
+ mtspr(SPRN_MAS6, 0);
+ asm volatile("tlbsx 0, %0" : : "b" (eaddr & ~CONFIG_PAGE_OFFSET));
+ mas0 = mfspr(SPRN_MAS0);
+ local_irq_restore(flags);
+
+ return mas0;
+}
+
+/* sesel is for tlb1 only */
+static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
+ int tlbsel, int sesel, struct kvm_book3e_206_tlb_entry *stlbe)
+{
+ u32 mas0;
+
+ if (tlbsel == 0) {
+ mas0 = get_host_mas0(stlbe->mas2);
+ __write_host_tlbe(stlbe, mas0);
+ } else {
+ __write_host_tlbe(stlbe,
+ MAS0_TLBSEL(1) |
+ MAS0_ESEL(to_htlb1_esel(sesel)));
+ }
+}
+
+/* sesel is for tlb1 only */
+static void write_stlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
+ struct kvm_book3e_206_tlb_entry *gtlbe,
+ struct kvm_book3e_206_tlb_entry *stlbe,
+ int stlbsel, int sesel)
+{
+ int stid;
+
+ preempt_disable();
+ stid = kvmppc_e500_get_tlb_stid(&vcpu_e500->vcpu, gtlbe);
+
+ stlbe->mas1 |= MAS1_TID(stid);
+ write_host_tlbe(vcpu_e500, stlbsel, sesel, stlbe);
+ preempt_enable();
+}
+
+#ifdef CONFIG_KVM_E500V2
+/* XXX should be a hook in the gva2hpa translation */
+void kvmppc_map_magic(struct kvm_vcpu *vcpu)
+{
+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+ struct kvm_book3e_206_tlb_entry magic;
+ ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
+ unsigned int stid;
+ pfn_t pfn;
+
+ pfn = (pfn_t)virt_to_phys((void *)shared_page) >> PAGE_SHIFT;
+ get_page(pfn_to_page(pfn));
+
+ preempt_disable();
+ stid = kvmppc_e500_get_sid(vcpu_e500, 0, 0, 0, 0);
+
+ magic.mas1 = MAS1_VALID | MAS1_TS | MAS1_TID(stid) |
+ MAS1_TSIZE(BOOK3E_PAGESZ_4K);
+ magic.mas2 = vcpu->arch.magic_page_ea | MAS2_M;
+ magic.mas7_3 = ((u64)pfn << PAGE_SHIFT) |
+ MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR;
+ magic.mas8 = 0;
+
+ __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index));
+ preempt_enable();
+}
+#endif
+
+void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel,
+ int esel)
+{
+ struct kvm_book3e_206_tlb_entry *gtlbe =
+ get_entry(vcpu_e500, tlbsel, esel);
+ struct tlbe_ref *ref = &vcpu_e500->gtlb_priv[tlbsel][esel].ref;
+
+ /* Don't bother with unmapped entries */
+ if (!(ref->flags & E500_TLB_VALID))
+ return;
+
+ if (tlbsel == 1 && ref->flags & E500_TLB_BITMAP) {
+ u64 tmp = vcpu_e500->g2h_tlb1_map[esel];
+ int hw_tlb_indx;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ while (tmp) {
+ hw_tlb_indx = __ilog2_u64(tmp & -tmp);
+ mtspr(SPRN_MAS0,
+ MAS0_TLBSEL(1) |
+ MAS0_ESEL(to_htlb1_esel(hw_tlb_indx)));
+ mtspr(SPRN_MAS1, 0);
+ asm volatile("tlbwe");
+ vcpu_e500->h2g_tlb1_rmap[hw_tlb_indx] = 0;
+ tmp &= tmp - 1;
+ }
+ mb();
+ vcpu_e500->g2h_tlb1_map[esel] = 0;
+ ref->flags &= ~(E500_TLB_BITMAP | E500_TLB_VALID);
+ local_irq_restore(flags);
+ }
+
+ if (tlbsel == 1 && ref->flags & E500_TLB_TLB0) {
+ /*
+ * TLB1 entry is backed by 4k pages. This should happen
+ * rarely and is not worth optimizing. Invalidate everything.
+ */
+ kvmppc_e500_tlbil_all(vcpu_e500);
+ ref->flags &= ~(E500_TLB_TLB0 | E500_TLB_VALID);
+ }
+
+ /* Already invalidated in between */
+ if (!(ref->flags & E500_TLB_VALID))
+ return;
+
+ /* Guest tlbe is backed by at most one host tlbe per shadow pid. */
+ kvmppc_e500_tlbil_one(vcpu_e500, gtlbe);
+
+ /* Mark the TLB as not backed by the host anymore */
+ ref->flags &= ~E500_TLB_VALID;
+}
+
+static inline int tlbe_is_writable(struct kvm_book3e_206_tlb_entry *tlbe)
+{
+ return tlbe->mas7_3 & (MAS3_SW|MAS3_UW);
+}
+
+static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref,
+ struct kvm_book3e_206_tlb_entry *gtlbe,
+ pfn_t pfn)
+{
+ ref->pfn = pfn;
+ ref->flags = E500_TLB_VALID;
+
+ if (tlbe_is_writable(gtlbe))
+ kvm_set_pfn_dirty(pfn);
+}
+
+static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref)
+{
+ if (ref->flags & E500_TLB_VALID) {
+ trace_kvm_booke206_ref_release(ref->pfn, ref->flags);
+ ref->flags = 0;
+ }
+}
+
+static void clear_tlb1_bitmap(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ if (vcpu_e500->g2h_tlb1_map)
+ memset(vcpu_e500->g2h_tlb1_map, 0,
+ sizeof(u64) * vcpu_e500->gtlb_params[1].entries);
+ if (vcpu_e500->h2g_tlb1_rmap)
+ memset(vcpu_e500->h2g_tlb1_rmap, 0,
+ sizeof(unsigned int) * host_tlb_params[1].entries);
+}
+
+static void clear_tlb_privs(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ int tlbsel = 0;
+ int i;
+
+ for (i = 0; i < vcpu_e500->gtlb_params[tlbsel].entries; i++) {
+ struct tlbe_ref *ref =
+ &vcpu_e500->gtlb_priv[tlbsel][i].ref;
+ kvmppc_e500_ref_release(ref);
+ }
+}
+
+static void clear_tlb_refs(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ int stlbsel = 1;
+ int i;
+
+ kvmppc_e500_tlbil_all(vcpu_e500);
+
+ for (i = 0; i < host_tlb_params[stlbsel].entries; i++) {
+ struct tlbe_ref *ref =
+ &vcpu_e500->tlb_refs[stlbsel][i];
+ kvmppc_e500_ref_release(ref);
+ }
+
+ clear_tlb_privs(vcpu_e500);
+}
+
+void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu)
+{
+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+ clear_tlb_refs(vcpu_e500);
+ clear_tlb1_bitmap(vcpu_e500);
+}
+
+/* TID must be supplied by the caller */
+static void kvmppc_e500_setup_stlbe(
+ struct kvm_vcpu *vcpu,
+ struct kvm_book3e_206_tlb_entry *gtlbe,
+ int tsize, struct tlbe_ref *ref, u64 gvaddr,
+ struct kvm_book3e_206_tlb_entry *stlbe)
+{
+ pfn_t pfn = ref->pfn;
+ u32 pr = vcpu->arch.shared->msr & MSR_PR;
+
+ BUG_ON(!(ref->flags & E500_TLB_VALID));
+
+ /* Force IPROT=0 for all guest mappings. */
+ stlbe->mas1 = MAS1_TSIZE(tsize) | get_tlb_sts(gtlbe) | MAS1_VALID;
+ stlbe->mas2 = (gvaddr & MAS2_EPN) |
+ e500_shadow_mas2_attrib(gtlbe->mas2, pr);
+ stlbe->mas7_3 = ((u64)pfn << PAGE_SHIFT) |
+ e500_shadow_mas3_attrib(gtlbe->mas7_3, pr);
+
+#ifdef CONFIG_KVM_BOOKE_HV
+ stlbe->mas8 = MAS8_TGS | vcpu->kvm->arch.lpid;
+#endif
+}
+
+static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
+ u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe,
+ int tlbsel, struct kvm_book3e_206_tlb_entry *stlbe,
+ struct tlbe_ref *ref)
+{
+ struct kvm_memory_slot *slot;
+ unsigned long pfn = 0; /* silence GCC warning */
+ unsigned long hva;
+ int pfnmap = 0;
+ int tsize = BOOK3E_PAGESZ_4K;
+
+ /*
+ * Translate guest physical to true physical, acquiring
+ * a page reference if it is normal, non-reserved memory.
+ *
+ * gfn_to_memslot() must succeed because otherwise we wouldn't
+ * have gotten this far. Eventually we should just pass the slot
+ * pointer through from the first lookup.
+ */
+ slot = gfn_to_memslot(vcpu_e500->vcpu.kvm, gfn);
+ hva = gfn_to_hva_memslot(slot, gfn);
+
+ if (tlbsel == 1) {
+ struct vm_area_struct *vma;
+ down_read(&current->mm->mmap_sem);
+
+ vma = find_vma(current->mm, hva);
+ if (vma && hva >= vma->vm_start &&
+ (vma->vm_flags & VM_PFNMAP)) {
+ /*
+ * This VMA is a physically contiguous region (e.g.
+ * /dev/mem) that bypasses normal Linux page
+ * management. Find the overlap between the
+ * vma and the memslot.
+ */
+
+ unsigned long start, end;
+ unsigned long slot_start, slot_end;
+
+ pfnmap = 1;
+
+ start = vma->vm_pgoff;
+ end = start +
+ ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT);
+
+ pfn = start + ((hva - vma->vm_start) >> PAGE_SHIFT);
+
+ slot_start = pfn - (gfn - slot->base_gfn);
+ slot_end = slot_start + slot->npages;
+
+ if (start < slot_start)
+ start = slot_start;
+ if (end > slot_end)
+ end = slot_end;
+
+ tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >>
+ MAS1_TSIZE_SHIFT;
+
+ /*
+ * e500 doesn't implement the lowest tsize bit,
+ * or 1K pages.
+ */
+ tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
+
+ /*
+ * Now find the largest tsize (up to what the guest
+ * requested) that will cover gfn, stay within the
+ * range, and for which gfn and pfn are mutually
+ * aligned.
+ */
+
+ for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) {
+ unsigned long gfn_start, gfn_end, tsize_pages;
+ tsize_pages = 1 << (tsize - 2);
+
+ gfn_start = gfn & ~(tsize_pages - 1);
+ gfn_end = gfn_start + tsize_pages;
+
+ if (gfn_start + pfn - gfn < start)
+ continue;
+ if (gfn_end + pfn - gfn > end)
+ continue;
+ if ((gfn & (tsize_pages - 1)) !=
+ (pfn & (tsize_pages - 1)))
+ continue;
+
+ gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1);
+ pfn &= ~(tsize_pages - 1);
+ break;
+ }
+ } else if (vma && hva >= vma->vm_start &&
+ (vma->vm_flags & VM_HUGETLB)) {
+ unsigned long psize = vma_kernel_pagesize(vma);
+
+ tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >>
+ MAS1_TSIZE_SHIFT;
+
+ /*
+ * Take the largest page size that satisfies both host
+ * and guest mapping
+ */
+ tsize = min(__ilog2(psize) - 10, tsize);
+
+ /*
+ * e500 doesn't implement the lowest tsize bit,
+ * or 1K pages.
+ */
+ tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
+ }
+
+ up_read(&current->mm->mmap_sem);
+ }
+
+ if (likely(!pfnmap)) {
+ unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT);
+ pfn = gfn_to_pfn_memslot(slot, gfn);
+ if (is_error_noslot_pfn(pfn)) {
+ printk(KERN_ERR "Couldn't get real page for gfn %lx!\n",
+ (long)gfn);
+ return -EINVAL;
+ }
+
+ /* Align guest and physical address to page map boundaries */
+ pfn &= ~(tsize_pages - 1);
+ gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1);
+ }
+
+ /* Drop old ref and setup new one. */
+ kvmppc_e500_ref_release(ref);
+ kvmppc_e500_ref_setup(ref, gtlbe, pfn);
+
+ kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize,
+ ref, gvaddr, stlbe);
+
+ /* Clear i-cache for new pages */
+ kvmppc_mmu_flush_icache(pfn);
+
+ /* Drop refcount on page, so that mmu notifiers can clear it */
+ kvm_release_pfn_clean(pfn);
+
+ return 0;
+}
+
+/* XXX only map the one-one case, for now use TLB0 */
+static int kvmppc_e500_tlb0_map(struct kvmppc_vcpu_e500 *vcpu_e500, int esel,
+ struct kvm_book3e_206_tlb_entry *stlbe)
+{
+ struct kvm_book3e_206_tlb_entry *gtlbe;
+ struct tlbe_ref *ref;
+ int stlbsel = 0;
+ int sesel = 0;
+ int r;
+
+ gtlbe = get_entry(vcpu_e500, 0, esel);
+ ref = &vcpu_e500->gtlb_priv[0][esel].ref;
+
+ r = kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe),
+ get_tlb_raddr(gtlbe) >> PAGE_SHIFT,
+ gtlbe, 0, stlbe, ref);
+ if (r)
+ return r;
+
+ write_stlbe(vcpu_e500, gtlbe, stlbe, stlbsel, sesel);
+
+ return 0;
+}
+
+static int kvmppc_e500_tlb1_map_tlb1(struct kvmppc_vcpu_e500 *vcpu_e500,
+ struct tlbe_ref *ref,
+ int esel)
+{
+ unsigned int sesel = vcpu_e500->host_tlb1_nv++;
+
+ if (unlikely(vcpu_e500->host_tlb1_nv >= tlb1_max_shadow_size()))
+ vcpu_e500->host_tlb1_nv = 0;
+
+ vcpu_e500->tlb_refs[1][sesel] = *ref;
+ vcpu_e500->g2h_tlb1_map[esel] |= (u64)1 << sesel;
+ vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_BITMAP;
+ if (vcpu_e500->h2g_tlb1_rmap[sesel]) {
+ unsigned int idx = vcpu_e500->h2g_tlb1_rmap[sesel];
+ vcpu_e500->g2h_tlb1_map[idx] &= ~(1ULL << sesel);
+ }
+ vcpu_e500->h2g_tlb1_rmap[sesel] = esel;
+
+ return sesel;
+}
+
+/* Caller must ensure that the specified guest TLB entry is safe to insert into
+ * the shadow TLB. */
+/* For both one-one and one-to-many */
+static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
+ u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe,
+ struct kvm_book3e_206_tlb_entry *stlbe, int esel)
+{
+ struct tlbe_ref ref;
+ int sesel;
+ int r;
+
+ ref.flags = 0;
+ r = kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, stlbe,
+ &ref);
+ if (r)
+ return r;
+
+ /* Use TLB0 when we can only map a page with 4k */
+ if (get_tlb_tsize(stlbe) == BOOK3E_PAGESZ_4K) {
+ vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_TLB0;
+ write_stlbe(vcpu_e500, gtlbe, stlbe, 0, 0);
+ return 0;
+ }
+
+ /* Otherwise map into TLB1 */
+ sesel = kvmppc_e500_tlb1_map_tlb1(vcpu_e500, &ref, esel);
+ write_stlbe(vcpu_e500, gtlbe, stlbe, 1, sesel);
+
+ return 0;
+}
+
+void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
+ unsigned int index)
+{
+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+ struct tlbe_priv *priv;
+ struct kvm_book3e_206_tlb_entry *gtlbe, stlbe;
+ int tlbsel = tlbsel_of(index);
+ int esel = esel_of(index);
+
+ gtlbe = get_entry(vcpu_e500, tlbsel, esel);
+
+ switch (tlbsel) {
+ case 0:
+ priv = &vcpu_e500->gtlb_priv[tlbsel][esel];
+
+ /* Triggers after clear_tlb_refs or on initial mapping */
+ if (!(priv->ref.flags & E500_TLB_VALID)) {
+ kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
+ } else {
+ kvmppc_e500_setup_stlbe(vcpu, gtlbe, BOOK3E_PAGESZ_4K,
+ &priv->ref, eaddr, &stlbe);
+ write_stlbe(vcpu_e500, gtlbe, &stlbe, 0, 0);
+ }
+ break;
+
+ case 1: {
+ gfn_t gfn = gpaddr >> PAGE_SHIFT;
+ kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn, gtlbe, &stlbe,
+ esel);
+ break;
+ }
+
+ default:
+ BUG();
+ break;
+ }
+}
+
+/************* MMU Notifiers *************/
+
+int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
+{
+ trace_kvm_unmap_hva(hva);
+
+ /*
+ * Flush all shadow tlb entries everywhere. This is slow, but
+ * we are 100% sure that we catch the to be unmapped page
+ */
+ kvm_flush_remote_tlbs(kvm);
+
+ return 0;
+}
+
+int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
+{
+ /* kvm_unmap_hva flushes everything anyways */
+ kvm_unmap_hva(kvm, start);
+
+ return 0;
+}
+
+int kvm_age_hva(struct kvm *kvm, unsigned long hva)
+{
+ /* XXX could be more clever ;) */
+ return 0;
+}
+
+int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
+{
+ /* XXX could be more clever ;) */
+ return 0;
+}
+
+void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
+{
+ /* The page will get remapped properly on its next fault */
+ kvm_unmap_hva(kvm, hva);
+}
+
+/*****************************************/
+
+int e500_mmu_host_init(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ host_tlb_params[0].entries = mfspr(SPRN_TLB0CFG) & TLBnCFG_N_ENTRY;
+ host_tlb_params[1].entries = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY;
+
+ /*
+ * This should never happen on real e500 hardware, but is
+ * architecturally possible -- e.g. in some weird nested
+ * virtualization case.
+ */
+ if (host_tlb_params[0].entries == 0 ||
+ host_tlb_params[1].entries == 0) {
+ pr_err("%s: need to know host tlb size\n", __func__);
+ return -ENODEV;
+ }
+
+ host_tlb_params[0].ways = (mfspr(SPRN_TLB0CFG) & TLBnCFG_ASSOC) >>
+ TLBnCFG_ASSOC_SHIFT;
+ host_tlb_params[1].ways = host_tlb_params[1].entries;
+
+ if (!is_power_of_2(host_tlb_params[0].entries) ||
+ !is_power_of_2(host_tlb_params[0].ways) ||
+ host_tlb_params[0].entries < host_tlb_params[0].ways ||
+ host_tlb_params[0].ways == 0) {
+ pr_err("%s: bad tlb0 host config: %u entries %u ways\n",
+ __func__, host_tlb_params[0].entries,
+ host_tlb_params[0].ways);
+ return -ENODEV;
+ }
+
+ host_tlb_params[0].sets =
+ host_tlb_params[0].entries / host_tlb_params[0].ways;
+ host_tlb_params[1].sets = 1;
+
+ vcpu_e500->tlb_refs[0] =
+ kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[0].entries,
+ GFP_KERNEL);
+ if (!vcpu_e500->tlb_refs[0])
+ goto err;
+
+ vcpu_e500->tlb_refs[1] =
+ kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[1].entries,
+ GFP_KERNEL);
+ if (!vcpu_e500->tlb_refs[1])
+ goto err;
+
+ vcpu_e500->h2g_tlb1_rmap = kzalloc(sizeof(unsigned int) *
+ host_tlb_params[1].entries,
+ GFP_KERNEL);
+ if (!vcpu_e500->h2g_tlb1_rmap)
+ goto err;
+
+ return 0;
+
+err:
+ kfree(vcpu_e500->tlb_refs[0]);
+ kfree(vcpu_e500->tlb_refs[1]);
+ return -EINVAL;
+}
+
+void e500_mmu_host_uninit(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ kfree(vcpu_e500->h2g_tlb1_rmap);
+ kfree(vcpu_e500->tlb_refs[0]);
+ kfree(vcpu_e500->tlb_refs[1]);
+}
diff --git a/arch/powerpc/kvm/e500_mmu_host.h b/arch/powerpc/kvm/e500_mmu_host.h
new file mode 100644
index 0000000..7624835
--- /dev/null
+++ b/arch/powerpc/kvm/e500_mmu_host.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2008-2013 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef KVM_E500_MMU_HOST_H
+#define KVM_E500_MMU_HOST_H
+
+void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel,
+ int esel);
+
+int e500_mmu_host_init(struct kvmppc_vcpu_e500 *vcpu_e500);
+void e500_mmu_host_uninit(struct kvmppc_vcpu_e500 *vcpu_e500);
+
+#endif /* KVM_E500_MMU_HOST_H */
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index 9d9cddc..7a73b6f 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -150,8 +150,6 @@ static int kvmppc_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
case SPRN_TBWL: break;
case SPRN_TBWU: break;
- case SPRN_MSSSR0: break;
-
case SPRN_DEC:
vcpu->arch.dec = spr_val;
kvmppc_emulate_dec(vcpu);
@@ -202,9 +200,6 @@ static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
case SPRN_PIR:
spr_val = vcpu->vcpu_id;
break;
- case SPRN_MSSSR0:
- spr_val = 0;
- break;
/* Note: mftb and TBRL/TBWL are user-accessible, so
* the guest can always access the real TB anyways.
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 70739a0..934413c 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -237,7 +237,8 @@ int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
r = RESUME_HOST;
break;
default:
- BUG();
+ WARN_ON(1);
+ r = RESUME_GUEST;
}
return r;
@@ -305,6 +306,7 @@ int kvm_dev_ioctl_check_extension(long ext)
#ifdef CONFIG_BOOKE
case KVM_CAP_PPC_BOOKE_SREGS:
case KVM_CAP_PPC_BOOKE_WATCHDOG:
+ case KVM_CAP_PPC_EPR:
#else
case KVM_CAP_PPC_SEGSTATE:
case KVM_CAP_PPC_HIOR:
@@ -412,7 +414,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
struct kvm_memory_slot *memslot,
struct kvm_memory_slot old,
struct kvm_userspace_memory_region *mem,
- int user_alloc)
+ bool user_alloc)
{
return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
}
@@ -420,7 +422,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
void kvm_arch_commit_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
struct kvm_memory_slot old,
- int user_alloc)
+ bool user_alloc)
{
kvmppc_core_commit_memory_region(kvm, mem, old);
}
@@ -720,6 +722,11 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
for (i = 0; i < 9; ++i)
kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
vcpu->arch.hcall_needed = 0;
+#ifdef CONFIG_BOOKE
+ } else if (vcpu->arch.epr_needed) {
+ kvmppc_set_epr(vcpu, run->epr.epr);
+ vcpu->arch.epr_needed = 0;
+#endif
}
r = kvmppc_vcpu_run(run, vcpu);
@@ -761,6 +768,10 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
r = 0;
vcpu->arch.papr_enabled = true;
break;
+ case KVM_CAP_PPC_EPR:
+ r = 0;
+ vcpu->arch.epr_enabled = cap->args[0];
+ break;
#ifdef CONFIG_BOOKE
case KVM_CAP_PPC_BOOKE_WATCHDOG:
r = 0;
generated by cgit v0.10.2 at 2024-11-15 07:54:53 (GMT)