* [PATCH] SPARC32 : vm_area_struct access for old Sun SPARCs
@ 2013-07-05 22:16 Olivier Danet
2013-07-10 20:49 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Olivier Danet @ 2013-07-05 22:16 UTC (permalink / raw)
To: sparclinux
Hi !
Here is a fix for a problem signalled by Rob Landley on the QEMU mailing
list :
http://lists.nongnu.org/archive/html/qemu-devel/2013-06/msg05013.html
The bug is present since Linux 3.8.
Regards
Olivier
[temlib.org]
=====================================[PATCH] SPARC32 : vm_area_struct access for old Sun SPARCs.
Commit e4c6bfd2d79d063017ab19a18915f0bc759f32d9 changed the layout of
the vm_area_struct structure, it broke several SPARC32 assembly routines
which used numerical constants for accessing the vm_mm field.
This patch defines the VMA_VM_MM constant to replace the immediate values.
Signed-off-by: Olivier DANET <odanet@caramail.com>
=====================================diff -rup linux_prev/arch/sparc/kernel/asm-offsets.c
linux/arch/sparc/kernel/asm-offsets.c
--- linux_prev/arch/sparc/kernel/asm-offsets.c 2013-07-04
23:16:37.741273224 +0200
+++ linux/arch/sparc/kernel/asm-offsets.c 2013-07-05
12:02:37.600058515 +0200
@@ -34,6 +34,8 @@ int foo(void)
DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
BLANK();
DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
+ BLANK();
+ DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm));
/* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
return 0;
diff -rup linux_prev/arch/sparc/mm/hypersparc.S
linux/arch/sparc/mm/hypersparc.S
--- linux_prev/arch/sparc/mm/hypersparc.S 2013-07-04
23:16:37.785273225 +0200
+++ linux/arch/sparc/mm/hypersparc.S 2013-07-05 12:11:20.507081068 +0200
@@ -74,7 +74,7 @@ hypersparc_flush_cache_mm_out:
/* The things we do for performance... */
hypersparc_flush_cache_range:
- ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
#ifndef CONFIG_SMP
ld [%o0 + AOFF_mm_context], %g1
cmp %g1, -1
@@ -163,7 +163,7 @@ hypersparc_flush_cache_range_out:
*/
/* Verified, my ass... */
hypersparc_flush_cache_page:
- ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
ld [%o0 + AOFF_mm_context], %g2
#ifndef CONFIG_SMP
cmp %g2, -1
@@ -284,7 +284,7 @@ hypersparc_flush_tlb_mm_out:
sta %g5, [%g1] ASI_M_MMUREGS
hypersparc_flush_tlb_range:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
mov SRMMU_CTX_REG, %g1
ld [%o0 + AOFF_mm_context], %o3
lda [%g1] ASI_M_MMUREGS, %g5
@@ -307,7 +307,7 @@ hypersparc_flush_tlb_range_out:
sta %g5, [%g1] ASI_M_MMUREGS
hypersparc_flush_tlb_page:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
mov SRMMU_CTX_REG, %g1
ld [%o0 + AOFF_mm_context], %o3
andn %o1, (PAGE_SIZE - 1), %o1
diff -rup linux_prev/arch/sparc/mm/swift.S linux/arch/sparc/mm/swift.S
--- linux_prev/arch/sparc/mm/swift.S 2013-07-04 23:16:37.785273225 +0200
+++ linux/arch/sparc/mm/swift.S 2013-07-05 12:04:10.116062505 +0200
@@ -105,7 +105,7 @@ swift_flush_cache_mm_out:
.globl swift_flush_cache_range
swift_flush_cache_range:
- ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
sub %o2, %o1, %o2
sethi %hi(4096), %o3
cmp %o2, %o3
@@ -116,7 +116,7 @@ swift_flush_cache_range:
.globl swift_flush_cache_page
swift_flush_cache_page:
- ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
70:
ld [%o0 + AOFF_mm_context], %g2
cmp %g2, -1
@@ -219,7 +219,7 @@ swift_flush_sig_insns:
.globl swift_flush_tlb_range
.globl swift_flush_tlb_all
swift_flush_tlb_range:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
swift_flush_tlb_mm:
ld [%o0 + AOFF_mm_context], %g2
cmp %g2, -1
@@ -233,7 +233,7 @@ swift_flush_tlb_all_out:
.globl swift_flush_tlb_page
swift_flush_tlb_page:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
mov SRMMU_CTX_REG, %g1
ld [%o0 + AOFF_mm_context], %o3
andn %o1, (PAGE_SIZE - 1), %o1
diff -rup linux_prev/arch/sparc/mm/tsunami.S linux/arch/sparc/mm/tsunami.S
--- linux_prev/arch/sparc/mm/tsunami.S 2013-07-04 23:16:37.787273226
+0200
+++ linux/arch/sparc/mm/tsunami.S 2013-07-05 12:09:00.534075031 +0200
@@ -24,7 +24,7 @@
/* Sliiick... */
tsunami_flush_cache_page:
tsunami_flush_cache_range:
- ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
tsunami_flush_cache_mm:
ld [%o0 + AOFF_mm_context], %g2
cmp %g2, -1
@@ -46,7 +46,7 @@ tsunami_flush_sig_insns:
/* More slick stuff... */
tsunami_flush_tlb_range:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
tsunami_flush_tlb_mm:
ld [%o0 + AOFF_mm_context], %g2
cmp %g2, -1
@@ -65,7 +65,7 @@ tsunami_flush_tlb_out:
/* This one can be done in a fine grained manner... */
tsunami_flush_tlb_page:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
mov SRMMU_CTX_REG, %g1
ld [%o0 + AOFF_mm_context], %o3
andn %o1, (PAGE_SIZE - 1), %o1
diff -rup linux_prev/arch/sparc/mm/viking.S linux/arch/sparc/mm/viking.S
--- linux_prev/arch/sparc/mm/viking.S 2013-07-04 23:16:37.786273226 +0200
+++ linux/arch/sparc/mm/viking.S 2013-07-05 23:44:20.533261397 +0200
@@ -108,7 +108,7 @@ viking_mxcc_flush_page:
viking_flush_cache_page:
viking_flush_cache_range:
#ifndef CONFIG_SMP
- ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
#endif
viking_flush_cache_mm:
#ifndef CONFIG_SMP
@@ -148,7 +148,7 @@ viking_flush_tlb_mm:
#endif
viking_flush_tlb_range:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
mov SRMMU_CTX_REG, %g1
ld [%o0 + AOFF_mm_context], %o3
lda [%g1] ASI_M_MMUREGS, %g5
@@ -173,7 +173,7 @@ viking_flush_tlb_range:
#endif
viking_flush_tlb_page:
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
mov SRMMU_CTX_REG, %g1
ld [%o0 + AOFF_mm_context], %o3
lda [%g1] ASI_M_MMUREGS, %g5
@@ -239,7 +239,7 @@ sun4dsmp_flush_tlb_range:
tst %g5
bne 3f
mov SRMMU_CTX_REG, %g1
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
ld [%o0 + AOFF_mm_context], %o3
lda [%g1] ASI_M_MMUREGS, %g5
sethi %hi(~((1 << SRMMU_PGDIR_SHIFT) - 1)), %o4
@@ -265,7 +265,7 @@ sun4dsmp_flush_tlb_page:
tst %g5
bne 2f
mov SRMMU_CTX_REG, %g1
- ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
+ ld [%o0 + VMA_VM_MM], %o0
ld [%o0 + AOFF_mm_context], %o3
lda [%g1] ASI_M_MMUREGS, %g5
and %o1, PAGE_MASK, %o1
=====================================
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] SPARC32 : vm_area_struct access for old Sun SPARCs
2013-07-05 22:16 [PATCH] SPARC32 : vm_area_struct access for old Sun SPARCs Olivier Danet
@ 2013-07-10 20:49 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2013-07-10 20:49 UTC (permalink / raw)
To: sparclinux
From: Olivier Danet <odanet@caramail.com>
Date: Sat, 06 Jul 2013 00:16:12 +0200
> Here is a fix for a problem signalled by Rob Landley on the QEMU
> mailing list :
>
> http://lists.nongnu.org/archive/html/qemu-devel/2013-06/msg05013.html
>
> The bug is present since Linux 3.8.
Your patch was severely corrupted by your email client, amongst other
things it turned all TAB characters into spaces. It also chopped up
long line.
I applied the patch by hand, but next time I'm going to push this patch
back to you and you will need to properly submit it unmolested.
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-07-10 20:49 ` David Miller
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