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| author | Nicholas Piggin <npiggin@gmail.com> | 2019-06-22 23:15:17 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-07-02 20:24:42 +1000 |
| commit | 17bdc064a1fe8638b526ec44e6593685dbfdc714 (patch) | |
| tree | 64949656e69ddb8e87d0bb2abbb0ea07de95b782 /arch/powerpc | |
| parent | fa4cf6b703f4d63b9a422e24332266ef7efae7b6 (diff) | |
| download | linux-17bdc064a1fe8638b526ec44e6593685dbfdc714.tar.gz linux-17bdc064a1fe8638b526ec44e6593685dbfdc714.tar.bz2 linux-17bdc064a1fe8638b526ec44e6593685dbfdc714.zip | |
powerpc/64s/exception: merge KVM handler and skip variants
Conditionally expand the skip case if it is specified.
No generated code change.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 28 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/head-64.h | 8 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 2 |
3 files changed, 15 insertions, 23 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 4111888e04d7..d2a5bbeb727d 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -436,26 +436,17 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) .endif .endm -.macro KVM_HANDLER area, hsrr, n +.macro KVM_HANDLER area, hsrr, n, skip + .if \skip + cmpwi r10,KVM_GUEST_MODE_SKIP + beq 89f + .else BEGIN_FTR_SECTION_NESTED(947) ld r10,\area+EX_CFAR(r13) std r10,HSTATE_CFAR(r13) END_FTR_SECTION_NESTED(CPU_FTR_CFAR,CPU_FTR_CFAR,947) - BEGIN_FTR_SECTION_NESTED(948) - ld r10,\area+EX_PPR(r13) - std r10,HSTATE_PPR(r13) - END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948) - ld r10,\area+EX_R10(r13) - std r12,HSTATE_SCRATCH0(r13) - sldi r12,r9,32 - ori r12,r12,(\n) - /* This reloads r9 before branching to kvmppc_interrupt */ - __BRANCH_TO_KVM_EXIT(\area, kvmppc_interrupt) -.endm + .endif -.macro KVM_HANDLER_SKIP area, hsrr, n - cmpwi r10,KVM_GUEST_MODE_SKIP - beq 89f BEGIN_FTR_SECTION_NESTED(948) ld r10,\area+EX_PPR(r13) std r10,HSTATE_PPR(r13) @@ -466,6 +457,8 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) ori r12,r12,(\n) /* This reloads r9 before branching to kvmppc_interrupt */ __BRANCH_TO_KVM_EXIT(\area, kvmppc_interrupt) + + .if \skip 89: mtocrf 0x80,r9 ld r9,\area+EX_R9(r13) ld r10,\area+EX_R10(r13) @@ -474,14 +467,13 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) .else b kvmppc_skip_interrupt .endif + .endif .endm #else .macro KVMTEST hsrr, n .endm -.macro KVM_HANDLER area, hsrr, n -.endm -.macro KVM_HANDLER_SKIP area, hsrr, n +.macro KVM_HANDLER area, hsrr, n, skip .endm #endif diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h index 4767d6c7b8fa..518d9758b41e 100644 --- a/arch/powerpc/include/asm/head-64.h +++ b/arch/powerpc/include/asm/head-64.h @@ -387,22 +387,22 @@ name: #define TRAMP_KVM(area, n) \ TRAMP_KVM_BEGIN(do_kvm_##n); \ - KVM_HANDLER area, EXC_STD, n + KVM_HANDLER area, EXC_STD, n, 0 #define TRAMP_KVM_SKIP(area, n) \ TRAMP_KVM_BEGIN(do_kvm_##n); \ - KVM_HANDLER_SKIP area, EXC_STD, n + KVM_HANDLER area, EXC_STD, n, 1 /* * HV variant exceptions get the 0x2 bit added to their trap number. */ #define TRAMP_KVM_HV(area, n) \ TRAMP_KVM_BEGIN(do_kvm_H##n); \ - KVM_HANDLER area, EXC_HV, n + 0x2 + KVM_HANDLER area, EXC_HV, n + 0x2, 0 #define TRAMP_KVM_HV_SKIP(area, n) \ TRAMP_KVM_BEGIN(do_kvm_H##n); \ - KVM_HANDLER_SKIP area, EXC_HV, n + 0x2 + KVM_HANDLER area, EXC_HV, n + 0x2, 1 #define EXC_COMMON(name, realvec, hdlr) \ EXC_COMMON_BEGIN(name); \ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index cc356a31d5cc..d30f2b5fd206 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1063,7 +1063,7 @@ TRAMP_KVM_BEGIN(do_kvm_0xc00) SET_SCRATCH0(r10) std r9,PACA_EXGEN+EX_R9(r13) mfcr r9 - KVM_HANDLER PACA_EXGEN, EXC_STD, 0xc00 + KVM_HANDLER PACA_EXGEN, EXC_STD, 0xc00, 0 #endif |