diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 13:50:21 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 04:22:05 +0200 |
| commit | 5747230645562921b5bc19f6409f7af08fe17c6d (patch) | |
| tree | 159d06a6af15fb4d91d917648b9f2904607a982e /arch/powerpc/include/asm/processor.h | |
| parent | powerpc/32: Use fast instruction to set MSR RI in exception prolog on 8xx (diff) | |
| download | linux-5747230645562921b5bc19f6409f7af08fe17c6d.tar.xz linux-5747230645562921b5bc19f6409f7af08fe17c6d.zip | |
powerpc/32: Remove ksp_limit
ksp_limit is there to help detect stack overflows.
That is specific to ppc32 as it was removed from ppc64 in
commit cbc9565ee826 ("powerpc: Remove ksp_limit on ppc64").
There are other means for detecting stack overflows.
As ppc64 has proven to not need it, ppc32 should be able to do
without it too.
Lets remove it and simplify exception handling.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/d789c3385b22e07bedc997613c0d26074cb513e7.1615552866.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/processor.h')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 8acc3590c971..43cbd9281055 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -144,7 +144,6 @@ struct thread_struct { #endif #ifdef CONFIG_PPC32 void *pgdir; /* root of page-table tree */ - unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */ #ifdef CONFIG_PPC_RTAS unsigned long rtas_sp; /* stack pointer for when in RTAS */ #endif @@ -282,7 +281,6 @@ struct thread_struct { #ifdef CONFIG_PPC32 #define INIT_THREAD { \ .ksp = INIT_SP, \ - .ksp_limit = INIT_SP_LIMIT, \ .pgdir = swapper_pg_dir, \ .fpexc_mode = MSR_FE0 | MSR_FE1, \ SPEFSCR_INIT \ |