diff options
| author |   Nicholas Piggin <npiggin@gmail.com> | 2017-05-21 23:15:46 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-06-20 22:22:00 +1000 |
| commit | 8c3885141537966065e3d2b9be03e574ae381c79 (patch) | |
| tree | e9f291a3ef0bbf380f1c5118cc3ff2f6970ca780 /arch | |
| parent | powerpc/64s: Avoid r3 save/restore in SLB miss handler (diff) | |
| download | linux-dev-8c3885141537966065e3d2b9be03e574ae381c79.tar.xz linux-dev-8c3885141537966065e3d2b9be03e574ae381c79.zip | |
powerpc/64s: Add EX_SIZE definition for paca exception save areas
Rather than open-coding it 4 times.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Move __ASSEMBLY__ guards into head-64.h where they're really needed]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/head-64.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/paca.h | 12 |
3 files changed, 14 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 33473cbc0986..9f7f9be6bf7a 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -36,6 +36,7 @@ */ #include <asm/head-64.h> +/* PACA save area offsets (exgen, exmc, etc) */ #define EX_R9 0 #define EX_R10 8 #define EX_R11 16 @@ -51,6 +52,8 @@ #define EX_PPR 88 /* SMT thread status register (priority) */ #define EX_CTR 96 +#define EX_SIZE 13 /* size in u64 units */ + #ifdef CONFIG_RELOCATABLE #define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h index 7ab95798f170..d81eac5b509f 100644 --- a/arch/powerpc/include/asm/head-64.h +++ b/arch/powerpc/include/asm/head-64.h @@ -3,6 +3,7 @@ #include <asm/cache.h> +#ifdef __ASSEMBLY__ /* * We can't do CPP stringification and concatination directly into the section * name for some reason, so these macros can do it for us. @@ -415,4 +416,6 @@ name: EXC_COMMON_BEGIN(name); \ STD_EXCEPTION_COMMON(realvec + 0x2, name, hdlr); \ +#endif /* __ASSEMBLY__ */ + #endif /* _ASM_POWERPC_HEAD_64_H */ diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index 77f60a0f1405..dc88a31cc79a 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -21,7 +21,11 @@ #include <asm/lppaca.h> #include <asm/mmu.h> #include <asm/page.h> +#ifdef CONFIG_PPC_BOOK3E #include <asm/exception-64e.h> +#else +#include <asm/exception-64s.h> +#endif #ifdef CONFIG_KVM_BOOK3S_64_HANDLER #include <asm/kvm_book3s_asm.h> #endif @@ -98,8 +102,8 @@ struct paca_struct { * Now, starting in cacheline 2, the exception save areas */ /* used for most interrupts/exceptions */ - u64 exgen[13] __attribute__((aligned(0x80))); - u64 exslb[13]; /* used for SLB/segment table misses + u64 exgen[EX_SIZE] __attribute__((aligned(0x80))); + u64 exslb[EX_SIZE]; /* used for SLB/segment table misses * on the linear mapping */ /* SLB related definitions */ u16 vmalloc_sllp; @@ -183,8 +187,8 @@ struct paca_struct { #ifdef CONFIG_PPC_STD_MMU_64 /* Non-maskable exceptions that are not performance critical */ - u64 exnmi[13]; /* used for system reset (nmi) */ - u64 exmc[13]; /* used for machine checks */ + u64 exnmi[EX_SIZE]; /* used for system reset (nmi) */ + u64 exmc[EX_SIZE]; /* used for machine checks */ #endif #ifdef CONFIG_PPC_BOOK3S_64 /* Exclusive stacks for system reset and machine check exception. */ |