summaryrefslogtreecommitdiff
path: root/arch/arm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/page.h11
-rw-r--r--arch/arm/mm/copypage-feroceon.c20
-rw-r--r--arch/arm/mm/copypage-v3.c13
-rw-r--r--arch/arm/mm/copypage-v4mc.c28
-rw-r--r--arch/arm/mm/copypage-v4wb.c28
-rw-r--r--arch/arm/mm/copypage-v4wt.c24
-rw-r--r--arch/arm/mm/copypage-v6.c23
-rw-r--r--arch/arm/mm/copypage-xsc3.c25
-rw-r--r--arch/arm/mm/copypage-xscale.c26
-rw-r--r--arch/arm/mm/proc-syms.c2
10 files changed, 100 insertions, 100 deletions
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
index 1581b8c..77747df 100644
--- a/arch/arm/include/asm/page.h
+++ b/arch/arm/include/asm/page.h
@@ -111,7 +111,7 @@
struct page;
struct cpu_user_fns {
- void (*cpu_clear_user_page)(void *p, unsigned long user);
+ void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr);
void (*cpu_copy_user_highpage)(struct page *to, struct page *from,
unsigned long vaddr);
};
@@ -119,20 +119,21 @@ struct cpu_user_fns {
#ifdef MULTI_USER
extern struct cpu_user_fns cpu_user;
-#define __cpu_clear_user_page cpu_user.cpu_clear_user_page
+#define __cpu_clear_user_highpage cpu_user.cpu_clear_user_highpage
#define __cpu_copy_user_highpage cpu_user.cpu_copy_user_highpage
#else
-#define __cpu_clear_user_page __glue(_USER,_clear_user_page)
+#define __cpu_clear_user_highpage __glue(_USER,_clear_user_highpage)
#define __cpu_copy_user_highpage __glue(_USER,_copy_user_highpage)
-extern void __cpu_clear_user_page(void *p, unsigned long user);
+extern void __cpu_clear_user_highpage(struct page *page, unsigned long vaddr);
extern void __cpu_copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr);
#endif
-#define clear_user_page(addr,vaddr,pg) __cpu_clear_user_page(addr, vaddr)
+#define clear_user_highpage(page,vaddr) \
+ __cpu_clear_user_highpage(page, vaddr)
#define __HAVE_ARCH_COPY_USER_HIGHPAGE
#define copy_user_highpage(to,from,vaddr,vma) \
diff --git a/arch/arm/mm/copypage-feroceon.c b/arch/arm/mm/copypage-feroceon.c
index edd7168..c3651b2 100644
--- a/arch/arm/mm/copypage-feroceon.c
+++ b/arch/arm/mm/copypage-feroceon.c
@@ -79,12 +79,11 @@ void feroceon_copy_user_highpage(struct page *to, struct page *from,
kunmap_atomic(kto, KM_USER0);
}
-void __attribute__((naked))
-feroceon_clear_user_page(void *kaddr, unsigned long vaddr)
+void feroceon_clear_user_highpage(struct page *page, unsigned long vaddr)
{
+ void *kaddr = kmap_atomic(page, KM_USER0);
asm("\
- stmfd sp!, {r4-r7, lr} \n\
- mov r1, %0 \n\
+ mov r1, %1 \n\
mov r2, #0 \n\
mov r3, #0 \n\
mov r4, #0 \n\
@@ -93,19 +92,20 @@ feroceon_clear_user_page(void *kaddr, unsigned long vaddr)
mov r7, #0 \n\
mov ip, #0 \n\
mov lr, #0 \n\
-1: stmia r0, {r2-r7, ip, lr} \n\
+1: stmia %0, {r2-r7, ip, lr} \n\
subs r1, r1, #1 \n\
- mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line\n\
+ mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\
add r0, r0, #32 \n\
bne 1b \n\
- mcr p15, 0, r1, c7, c10, 4 @ drain WB\n\
- ldmfd sp!, {r4-r7, pc}"
+ mcr p15, 0, r1, c7, c10, 4 @ drain WB"
:
- : "I" (PAGE_SIZE / 32));
+ : "r" (kaddr), "I" (PAGE_SIZE / 32)
+ : "r1", "r2", "r3", "r4", "r5", "r6", "r7", "ip", "lr");
+ kunmap_atomic(kaddr, KM_USER0);
}
struct cpu_user_fns feroceon_user_fns __initdata = {
- .cpu_clear_user_page = feroceon_clear_user_page,
+ .cpu_clear_user_highpage = feroceon_clear_user_highpage,
.cpu_copy_user_highpage = feroceon_copy_user_highpage,
};
diff --git a/arch/arm/mm/copypage-v3.c b/arch/arm/mm/copypage-v3.c
index 52df8f0..13ce0ba 100644
--- a/arch/arm/mm/copypage-v3.c
+++ b/arch/arm/mm/copypage-v3.c
@@ -54,10 +54,10 @@ void v3_copy_user_highpage(struct page *to, struct page *from,
*
* FIXME: do we need to handle cache stuff...
*/
-void __attribute__((naked)) v3_clear_user_page(void *kaddr, unsigned long vaddr)
+void v3_clear_user_highpage(struct page *page, unsigned long vaddr)
{
+ void *kaddr = kmap_atomic(page, KM_USER0);
asm("\n\
- str lr, [sp, #-4]!\n\
mov r1, %1 @ 1\n\
mov r2, #0 @ 1\n\
mov r3, #0 @ 1\n\
@@ -68,13 +68,14 @@ void __attribute__((naked)) v3_clear_user_page(void *kaddr, unsigned long vaddr)
stmia %0!, {r2, r3, ip, lr} @ 4\n\
stmia %0!, {r2, r3, ip, lr} @ 4\n\
subs r1, r1, #1 @ 1\n\
- bne 1b @ 1\n\
- ldr pc, [sp], #4"
+ bne 1b @ 1"
:
- : "r" (kaddr), "I" (PAGE_SIZE / 64));
+ : "r" (kaddr), "I" (PAGE_SIZE / 64)
+ : "r1", "r2", "r3", "ip", "lr");
+ kunmap_atomic(kaddr, KM_USER0);
}
struct cpu_user_fns v3_user_fns __initdata = {
- .cpu_clear_user_page = v3_clear_user_page,
+ .cpu_clear_user_highpage = v3_clear_user_highpage,
.cpu_copy_user_highpage = v3_copy_user_highpage,
};
diff --git a/arch/arm/mm/copypage-v4mc.c b/arch/arm/mm/copypage-v4mc.c
index a7dc838..a5eae50 100644
--- a/arch/arm/mm/copypage-v4mc.c
+++ b/arch/arm/mm/copypage-v4mc.c
@@ -91,30 +91,30 @@ void v4_mc_copy_user_highpage(struct page *from, struct page *to,
/*
* ARMv4 optimised clear_user_page
*/
-void __attribute__((naked))
-v4_mc_clear_user_page(void *kaddr, unsigned long vaddr)
+void v4_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
{
- asm volatile(
- "str lr, [sp, #-4]!\n\
+ void *kaddr = kmap_atomic(page, KM_USER0);
+ asm volatile("\
mov r1, %0 @ 1\n\
mov r2, #0 @ 1\n\
mov r3, #0 @ 1\n\
mov ip, #0 @ 1\n\
mov lr, #0 @ 1\n\
-1: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
+1: mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
subs r1, r1, #1 @ 1\n\
- bne 1b @ 1\n\
- ldr pc, [sp], #4"
+ bne 1b @ 1"
:
- : "I" (PAGE_SIZE / 64));
+ : "r" (kaddr), "I" (PAGE_SIZE / 64)
+ : "r1", "r2", "r3", "ip", "lr");
+ kunmap_atomic(kaddr, KM_USER0);
}
struct cpu_user_fns v4_mc_user_fns __initdata = {
- .cpu_clear_user_page = v4_mc_clear_user_page,
+ .cpu_clear_user_highpage = v4_mc_clear_user_highpage,
.cpu_copy_user_highpage = v4_mc_copy_user_highpage,
};
diff --git a/arch/arm/mm/copypage-v4wb.c b/arch/arm/mm/copypage-v4wb.c
index 186a68a..9144a96 100644
--- a/arch/arm/mm/copypage-v4wb.c
+++ b/arch/arm/mm/copypage-v4wb.c
@@ -64,31 +64,31 @@ void v4wb_copy_user_highpage(struct page *to, struct page *from,
*
* Same story as above.
*/
-void __attribute__((naked))
-v4wb_clear_user_page(void *kaddr, unsigned long vaddr)
+void v4wb_clear_user_highpage(struct page *page, unsigned long vaddr)
{
+ void *kaddr = kmap_atomic(page, KM_USER0);
asm("\
- str lr, [sp, #-4]!\n\
- mov r1, %0 @ 1\n\
+ mov r1, %1 @ 1\n\
mov r2, #0 @ 1\n\
mov r3, #0 @ 1\n\
mov ip, #0 @ 1\n\
mov lr, #0 @ 1\n\
-1: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
+1: mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
subs r1, r1, #1 @ 1\n\
bne 1b @ 1\n\
- mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB\n\
- ldr pc, [sp], #4"
+ mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB"
:
- : "I" (PAGE_SIZE / 64));
+ : "r" (kaddr), "I" (PAGE_SIZE / 64)
+ : "r1", "r2", "r3", "ip", "lr");
+ kunmap_atomic(kaddr, KM_USER0);
}
struct cpu_user_fns v4wb_user_fns __initdata = {
- .cpu_clear_user_page = v4wb_clear_user_page,
+ .cpu_clear_user_highpage = v4wb_clear_user_highpage,
.cpu_copy_user_highpage = v4wb_copy_user_highpage,
};
diff --git a/arch/arm/mm/copypage-v4wt.c b/arch/arm/mm/copypage-v4wt.c
index 86c2cfd..b8a345d 100644
--- a/arch/arm/mm/copypage-v4wt.c
+++ b/arch/arm/mm/copypage-v4wt.c
@@ -60,29 +60,29 @@ void v4wt_copy_user_highpage(struct page *to, struct page *from,
*
* Same story as above.
*/
-void __attribute__((naked))
-v4wt_clear_user_page(void *kaddr, unsigned long vaddr)
+void v4wt_clear_user_highpage(struct page *page, unsigned long vaddr)
{
+ void *kaddr = kmap_atomic(page, KM_USER0);
asm("\
- str lr, [sp, #-4]!\n\
- mov r1, %0 @ 1\n\
+ mov r1, %1 @ 1\n\
mov r2, #0 @ 1\n\
mov r3, #0 @ 1\n\
mov ip, #0 @ 1\n\
mov lr, #0 @ 1\n\
-1: stmia r0!, {r2, r3, ip, lr} @ 4\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
- stmia r0!, {r2, r3, ip, lr} @ 4\n\
+1: stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
+ stmia %0!, {r2, r3, ip, lr} @ 4\n\
subs r1, r1, #1 @ 1\n\
bne 1b @ 1\n\
- mcr p15, 0, r2, c7, c7, 0 @ flush ID cache\n\
- ldr pc, [sp], #4"
+ mcr p15, 0, r2, c7, c7, 0 @ flush ID cache"
:
- : "I" (PAGE_SIZE / 64));
+ : "r" (kaddr), "I" (PAGE_SIZE / 64)
+ : "r1", "r2", "r3", "ip", "lr");
+ kunmap_atomic(kaddr, KM_USER0);
}
struct cpu_user_fns v4wt_user_fns __initdata = {
- .cpu_clear_user_page = v4wt_clear_user_page,
+ .cpu_clear_user_highpage = v4wt_clear_user_highpage,
.cpu_copy_user_highpage = v4wt_copy_user_highpage,
};
diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c
index 2ea75d0..4127a7b 100644
--- a/arch/arm/mm/copypage-v6.c
+++ b/arch/arm/mm/copypage-v6.c
@@ -49,9 +49,11 @@ static void v6_copy_user_highpage_nonaliasing(struct page *to,
* Clear the user page. No aliasing to deal with so we can just
* attack the kernel's existing mapping of this page.
*/
-static void v6_clear_user_page_nonaliasing(void *kaddr, unsigned long vaddr)
+static void v6_clear_user_highpage_nonaliasing(struct page *page, unsigned long vaddr)
{
+ void *kaddr = kmap_atomic(page, KM_USER0);
clear_page(kaddr);
+ kunmap_atomic(kaddr, KM_USER0);
}
/*
@@ -107,20 +109,13 @@ static void v6_copy_user_highpage_aliasing(struct page *to,
* so remap the kernel page into the same cache colour as the user
* page.
*/
-static void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr)
+static void v6_clear_user_highpage_aliasing(struct page *page, unsigned long vaddr)
{
unsigned int offset = CACHE_COLOUR(vaddr);
unsigned long to = to_address + (offset << PAGE_SHIFT);
- /*
- * Discard data in the kernel mapping for the new page
- * FIXME: needs this MCRR to be supported.
- */
- __asm__("mcrr p15, 0, %1, %0, c6 @ 0xec401f06"
- :
- : "r" (kaddr),
- "r" ((unsigned long)kaddr + PAGE_SIZE - L1_CACHE_BYTES)
- : "cc");
+ /* FIXME: not highmem safe */
+ discard_old_kernel_data(page_address(page));
/*
* Now clear the page using the same cache colour as
@@ -128,7 +123,7 @@ static void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr)
*/
spin_lock(&v6_lock);
- set_pte_ext(TOP_PTE(to_address) + offset, pfn_pte(__pa(kaddr) >> PAGE_SHIFT, PAGE_KERNEL), 0);
+ set_pte_ext(TOP_PTE(to_address) + offset, pfn_pte(page_to_pfn(page), PAGE_KERNEL), 0);
flush_tlb_kernel_page(to);
clear_page((void *)to);
@@ -136,14 +131,14 @@ static void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr)
}
struct cpu_user_fns v6_user_fns __initdata = {
- .cpu_clear_user_page = v6_clear_user_page_nonaliasing,
+ .cpu_clear_user_highpage = v6_clear_user_highpage_nonaliasing,
.cpu_copy_user_highpage = v6_copy_user_highpage_nonaliasing,
};
static int __init v6_userpage_init(void)
{
if (cache_is_vipt_aliasing()) {
- cpu_user.cpu_clear_user_page = v6_clear_user_page_aliasing;
+ cpu_user.cpu_clear_user_highpage = v6_clear_user_highpage_aliasing;
cpu_user.cpu_copy_user_highpage = v6_copy_user_highpage_aliasing;
}
diff --git a/arch/arm/mm/copypage-xsc3.c b/arch/arm/mm/copypage-xsc3.c
index caa697c..0e7cb32 100644
--- a/arch/arm/mm/copypage-xsc3.c
+++ b/arch/arm/mm/copypage-xsc3.c
@@ -87,26 +87,27 @@ void xsc3_mc_copy_user_highpage(struct page *to, struct page *from,
* r0 = destination
* r1 = virtual user address of ultimate destination page
*/
-void __attribute__((naked))
-xsc3_mc_clear_user_page(void *kaddr, unsigned long vaddr)
+void xsc3_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
{
+ void *kaddr = kmap_atomic(page, KM_USER0);
asm("\
- mov r1, %0 \n\
+ mov r1, %1 \n\
mov r2, #0 \n\
mov r3, #0 \n\
-1: mcr p15, 0, r0, c7, c6, 1 @ invalidate line\n\
- strd r2, [r0], #8 \n\
- strd r2, [r0], #8 \n\
- strd r2, [r0], #8 \n\
- strd r2, [r0], #8 \n\
+1: mcr p15, 0, %0, c7, c6, 1 @ invalidate line\n\
+ strd r2, [%0], #8 \n\
+ strd r2, [%0], #8 \n\
+ strd r2, [%0], #8 \n\
+ strd r2, [%0], #8 \n\
subs r1, r1, #1 \n\
- bne 1b \n\
- mov pc, lr"
+ bne 1b"
:
- : "I" (PAGE_SIZE / 32));
+ : "r" (kaddr), "I" (PAGE_SIZE / 32)
+ : "r1", "r2", "r3");
+ kunmap_atomic(kaddr, KM_USER0);
}
struct cpu_user_fns xsc3_mc_user_fns __initdata = {
- .cpu_clear_user_page = xsc3_mc_clear_user_page,
+ .cpu_clear_user_highpage = xsc3_mc_clear_user_highpage,
.cpu_copy_user_highpage = xsc3_mc_copy_user_highpage,
};
diff --git a/arch/arm/mm/copypage-xscale.c b/arch/arm/mm/copypage-xscale.c
index 01bafaf..aa9f2ff 100644
--- a/arch/arm/mm/copypage-xscale.c
+++ b/arch/arm/mm/copypage-xscale.c
@@ -113,28 +113,30 @@ void xscale_mc_copy_user_highpage(struct page *to, struct page *from,
/*
* XScale optimised clear_user_page
*/
-void __attribute__((naked))
-xscale_mc_clear_user_page(void *kaddr, unsigned long vaddr)
+void
+xscale_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
{
+ void *kaddr = kmap_atomic(page, KM_USER0);
asm volatile(
- "mov r1, %0 \n\
+ "mov r1, %1 \n\
mov r2, #0 \n\
mov r3, #0 \n\
-1: mov ip, r0 \n\
- strd r2, [r0], #8 \n\
- strd r2, [r0], #8 \n\
- strd r2, [r0], #8 \n\
- strd r2, [r0], #8 \n\
+1: mov ip, %0 \n\
+ strd r2, [%0], #8 \n\
+ strd r2, [%0], #8 \n\
+ strd r2, [%0], #8 \n\
+ strd r2, [%0], #8 \n\
mcr p15, 0, ip, c7, c10, 1 @ clean D line\n\
subs r1, r1, #1 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line\n\
- bne 1b \n\
- mov pc, lr"
+ bne 1b"
:
- : "I" (PAGE_SIZE / 32));
+ : "r" (kaddr), "I" (PAGE_SIZE / 32)
+ : "r1", "r2", "r3", "ip");
+ kunmap_atomic(kaddr, KM_USER0);
}
struct cpu_user_fns xscale_mc_user_fns __initdata = {
- .cpu_clear_user_page = xscale_mc_clear_user_page,
+ .cpu_clear_user_highpage = xscale_mc_clear_user_highpage,
.cpu_copy_user_highpage = xscale_mc_copy_user_highpage,
};
diff --git a/arch/arm/mm/proc-syms.c b/arch/arm/mm/proc-syms.c
index b9743e6..4ad3bf2 100644
--- a/arch/arm/mm/proc-syms.c
+++ b/arch/arm/mm/proc-syms.c
@@ -33,7 +33,7 @@ EXPORT_SYMBOL(cpu_cache);
#ifdef CONFIG_MMU
#ifndef MULTI_USER
-EXPORT_SYMBOL(__cpu_clear_user_page);
+EXPORT_SYMBOL(__cpu_clear_user_highpage);
EXPORT_SYMBOL(__cpu_copy_user_highpage);
#else
EXPORT_SYMBOL(cpu_user);
generated by cgit v0.10.2 at 2024-11-07 06:04:08 (GMT)