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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-24 02:17:27 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-24 02:17:27 (GMT) |
commit | 0e9e3e306c7e472bdcffa34c4c4584301eda03b3 (patch) | |
tree | ae273fcf6af4b2a0c463cf3f1e836fa3e066b281 /arch | |
parent | 3185bd26188223195dc2e659a3d00219cad71a0f (diff) | |
parent | 801e7fb738c1049d93417dd8c2c4bf9cf567b668 (diff) | |
download | linux-0e9e3e306c7e472bdcffa34c4c4584301eda03b3.tar.xz |
Merge tag 'stable/for-linus-3.7-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull xen bug-fixes from Konrad Rzeszutek Wilk:
- Fix mysterious SIGSEGV or SIGKILL in applications due to corrupting
of the %eip when returning from a signal handler.
- Fix various ARM compile issues after the merge fallout.
- Continue on making more of the Xen generic code usable by ARM
platform.
- Fix SR-IOV passthrough to mirror multifunction PCI devices.
- Fix various compile warnings.
- Remove hypercalls that don't exist anymore.
* tag 'stable/for-linus-3.7-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: dbgp: Fix warning when CONFIG_PCI is not enabled.
xen: arm: comment on why 64-bit xen_pfn_t is safe even on 32 bit
xen: balloon: use correct type for frame_list
xen/x86: don't corrupt %eip when returning from a signal handler
xen: arm: make p2m operations NOPs
xen: balloon: don't include e820.h
xen: grant: use xen_pfn_t type for frame_list.
xen: events: pirq_check_eoi_map is X86 specific
xen: XENMEM_translate_gpfn_list was remove ages ago and is unused.
xen: sysfs: fix build warning.
xen: sysfs: include err.h for PTR_ERR etc
xen: xenbus: quirk uses x86 specific cpuid
xen PV passthru: assign SR-IOV virtual functions to separate virtual slots
xen/xenbus: Fix compile warning.
xen/x86: remove duplicated include from enlighten.c
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/include/asm/xen/interface.h | 12 | ||||
-rw-r--r-- | arch/arm/include/asm/xen/page.h | 13 | ||||
-rw-r--r-- | arch/arm/xen/grant-table.c | 2 | ||||
-rw-r--r-- | arch/x86/include/asm/xen/interface.h | 4 | ||||
-rw-r--r-- | arch/x86/kernel/entry_32.S | 8 | ||||
-rw-r--r-- | arch/x86/kernel/entry_64.S | 2 | ||||
-rw-r--r-- | arch/x86/xen/enlighten.c | 2 |
7 files changed, 28 insertions, 15 deletions
diff --git a/arch/arm/include/asm/xen/interface.h b/arch/arm/include/asm/xen/interface.h index ae05e56..5000397 100644 --- a/arch/arm/include/asm/xen/interface.h +++ b/arch/arm/include/asm/xen/interface.h @@ -29,16 +29,22 @@ #ifndef __ASSEMBLY__ /* Explicitly size integers that represent pfns in the interface with - * Xen so that we can have one ABI that works for 32 and 64 bit guests. */ + * Xen so that we can have one ABI that works for 32 and 64 bit guests. + * Note that this means that the xen_pfn_t type may be capable of + * representing pfn's which the guest cannot represent in its own pfn + * type. However since pfn space is controlled by the guest this is + * fine since it simply wouldn't be able to create any sure pfns in + * the first place. + */ typedef uint64_t xen_pfn_t; +#define PRI_xen_pfn "llx" typedef uint64_t xen_ulong_t; +#define PRI_xen_ulong "llx" /* Guest handles for primitive C types. */ __DEFINE_GUEST_HANDLE(uchar, unsigned char); __DEFINE_GUEST_HANDLE(uint, unsigned int); -__DEFINE_GUEST_HANDLE(ulong, unsigned long); DEFINE_GUEST_HANDLE(char); DEFINE_GUEST_HANDLE(int); -DEFINE_GUEST_HANDLE(long); DEFINE_GUEST_HANDLE(void); DEFINE_GUEST_HANDLE(uint64_t); DEFINE_GUEST_HANDLE(uint32_t); diff --git a/arch/arm/include/asm/xen/page.h b/arch/arm/include/asm/xen/page.h index 1742023..c6b9096 100644 --- a/arch/arm/include/asm/xen/page.h +++ b/arch/arm/include/asm/xen/page.h @@ -10,7 +10,7 @@ #include <xen/interface/grant_table.h> #define pfn_to_mfn(pfn) (pfn) -#define phys_to_machine_mapping_valid (1) +#define phys_to_machine_mapping_valid(pfn) (1) #define mfn_to_pfn(mfn) (mfn) #define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT)) @@ -30,6 +30,8 @@ typedef struct xpaddr { #define XMADDR(x) ((xmaddr_t) { .maddr = (x) }) #define XPADDR(x) ((xpaddr_t) { .paddr = (x) }) +#define INVALID_P2M_ENTRY (~0UL) + static inline xmaddr_t phys_to_machine(xpaddr_t phys) { unsigned offset = phys.paddr & ~PAGE_MASK; @@ -74,9 +76,14 @@ static inline int m2p_remove_override(struct page *page, bool clear_pte) return 0; } +static inline bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn) +{ + BUG_ON(pfn != mfn && mfn != INVALID_P2M_ENTRY); + return true; +} + static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn) { - BUG(); - return false; + return __set_phys_to_machine(pfn, mfn); } #endif /* _ASM_ARM_XEN_PAGE_H */ diff --git a/arch/arm/xen/grant-table.c b/arch/arm/xen/grant-table.c index dbd1330..859a9bb 100644 --- a/arch/arm/xen/grant-table.c +++ b/arch/arm/xen/grant-table.c @@ -33,7 +33,7 @@ #include <xen/page.h> #include <xen/grant_table.h> -int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes, +int arch_gnttab_map_shared(xen_pfn_t *frames, unsigned long nr_gframes, unsigned long max_nr_gframes, void **__shared) { diff --git a/arch/x86/include/asm/xen/interface.h b/arch/x86/include/asm/xen/interface.h index 6d2f75a..54d52ff 100644 --- a/arch/x86/include/asm/xen/interface.h +++ b/arch/x86/include/asm/xen/interface.h @@ -51,14 +51,14 @@ * with Xen so that on ARM we can have one ABI that works for 32 and 64 * bit guests. */ typedef unsigned long xen_pfn_t; +#define PRI_xen_pfn "lx" typedef unsigned long xen_ulong_t; +#define PRI_xen_ulong "lx" /* Guest handles for primitive C types. */ __DEFINE_GUEST_HANDLE(uchar, unsigned char); __DEFINE_GUEST_HANDLE(uint, unsigned int); -__DEFINE_GUEST_HANDLE(ulong, unsigned long); DEFINE_GUEST_HANDLE(char); DEFINE_GUEST_HANDLE(int); -DEFINE_GUEST_HANDLE(long); DEFINE_GUEST_HANDLE(void); DEFINE_GUEST_HANDLE(uint64_t); DEFINE_GUEST_HANDLE(uint32_t); diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index a1193ae..88b725a 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -1035,7 +1035,7 @@ ENTRY(xen_sysenter_target) ENTRY(xen_hypervisor_callback) CFI_STARTPROC - pushl_cfi $0 + pushl_cfi $-1 /* orig_ax = -1 => not a system call */ SAVE_ALL TRACE_IRQS_OFF @@ -1077,14 +1077,16 @@ ENTRY(xen_failsafe_callback) 2: mov 8(%esp),%es 3: mov 12(%esp),%fs 4: mov 16(%esp),%gs + /* EAX == 0 => Category 1 (Bad segment) + EAX != 0 => Category 2 (Bad IRET) */ testl %eax,%eax popl_cfi %eax lea 16(%esp),%esp CFI_ADJUST_CFA_OFFSET -16 jz 5f addl $16,%esp - jmp iret_exc # EAX != 0 => Category 2 (Bad IRET) -5: pushl_cfi $0 # EAX == 0 => Category 1 (Bad segment) + jmp iret_exc +5: pushl_cfi $-1 /* orig_ax = -1 => not a system call */ SAVE_ALL jmp ret_from_exception CFI_ENDPROC diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 0c58952..b51b2c7 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -1435,7 +1435,7 @@ ENTRY(xen_failsafe_callback) CFI_RESTORE r11 addq $0x30,%rsp CFI_ADJUST_CFA_OFFSET -0x30 - pushq_cfi $0 + pushq_cfi $-1 /* orig_ax = -1 => not a system call */ SAVE_ALL jmp error_exit CFI_ENDPROC diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index e3497f2..586d838 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -81,8 +81,6 @@ #include "smp.h" #include "multicalls.h" -#include <xen/events.h> - EXPORT_SYMBOL_GPL(hypercall_page); DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu); |