diff options
Diffstat (limited to 'arch/powerpc/include/asm/exception-64s.h')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 138 |
1 files changed, 97 insertions, 41 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index f5dfe34..da85ad4 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -61,19 +61,22 @@ #define EXC_HV H #define EXC_STD -#define EXCEPTION_PROLOG_1(area) \ +#define __EXCEPTION_PROLOG_1(area, extra, vec) \ GET_PACA(r13); \ std r9,area+EX_R9(r13); /* save r9 - r12 */ \ std r10,area+EX_R10(r13); \ - std r11,area+EX_R11(r13); \ - std r12,area+EX_R12(r13); \ BEGIN_FTR_SECTION_NESTED(66); \ mfspr r10,SPRN_CFAR; \ std r10,area+EX_CFAR(r13); \ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \ - GET_SCRATCH0(r9); \ - std r9,area+EX_R13(r13); \ - mfcr r9 + mfcr r9; \ + extra(vec); \ + std r11,area+EX_R11(r13); \ + std r12,area+EX_R12(r13); \ + GET_SCRATCH0(r10); \ + std r10,area+EX_R13(r13) +#define EXCEPTION_PROLOG_1(area, extra, vec) \ + __EXCEPTION_PROLOG_1(area, extra, vec) #define __EXCEPTION_PROLOG_PSERIES_1(label, h) \ ld r12,PACAKBASE(r13); /* get high part of &label */ \ @@ -85,13 +88,65 @@ mtspr SPRN_##h##SRR1,r10; \ h##rfid; \ b . /* prevent speculative execution */ -#define EXCEPTION_PROLOG_PSERIES_1(label, h) \ +#define EXCEPTION_PROLOG_PSERIES_1(label, h) \ __EXCEPTION_PROLOG_PSERIES_1(label, h) -#define EXCEPTION_PROLOG_PSERIES(area, label, h) \ - EXCEPTION_PROLOG_1(area); \ +#define EXCEPTION_PROLOG_PSERIES(area, label, h, extra, vec) \ + EXCEPTION_PROLOG_1(area, extra, vec); \ EXCEPTION_PROLOG_PSERIES_1(label, h); +#define __KVMTEST(n) \ + lbz r10,HSTATE_IN_GUEST(r13); \ + cmpwi r10,0; \ + bne do_kvm_##n + +#define __KVM_HANDLER(area, h, n) \ +do_kvm_##n: \ + ld r10,area+EX_R10(r13); \ + stw r9,HSTATE_SCRATCH1(r13); \ + ld r9,area+EX_R9(r13); \ + std r12,HSTATE_SCRATCH0(r13); \ + li r12,n; \ + b kvmppc_interrupt + +#define __KVM_HANDLER_SKIP(area, h, n) \ +do_kvm_##n: \ + cmpwi r10,KVM_GUEST_MODE_SKIP; \ + ld r10,area+EX_R10(r13); \ + beq 89f; \ + stw r9,HSTATE_SCRATCH1(r13); \ + ld r9,area+EX_R9(r13); \ + std r12,HSTATE_SCRATCH0(r13); \ + li r12,n; \ + b kvmppc_interrupt; \ +89: mtocrf 0x80,r9; \ + ld r9,area+EX_R9(r13); \ + b kvmppc_skip_##h##interrupt + +#ifdef CONFIG_KVM_BOOK3S_64_HANDLER +#define KVMTEST(n) __KVMTEST(n) +#define KVM_HANDLER(area, h, n) __KVM_HANDLER(area, h, n) +#define KVM_HANDLER_SKIP(area, h, n) __KVM_HANDLER_SKIP(area, h, n) + +#else +#define KVMTEST(n) +#define KVM_HANDLER(area, h, n) +#define KVM_HANDLER_SKIP(area, h, n) +#endif + +#ifdef CONFIG_KVM_BOOK3S_PR +#define KVMTEST_PR(n) __KVMTEST(n) +#define KVM_HANDLER_PR(area, h, n) __KVM_HANDLER(area, h, n) +#define KVM_HANDLER_PR_SKIP(area, h, n) __KVM_HANDLER_SKIP(area, h, n) + +#else +#define KVMTEST_PR(n) +#define KVM_HANDLER_PR(area, h, n) +#define KVM_HANDLER_PR_SKIP(area, h, n) +#endif + +#define NOTEST(n) + /* * The common exception prolog is used for all except a few exceptions * such as a segment miss on a kernel address. We have to be prepared @@ -108,7 +163,7 @@ subi r1,r1,INT_FRAME_SIZE; /* alloc frame on kernel stack */ \ beq- 1f; \ ld r1,PACAKSAVE(r13); /* kernel stack to use */ \ -1: cmpdi cr1,r1,0; /* check if r1 is in userspace */ \ +1: cmpdi cr1,r1,-INT_FRAME_SIZE; /* check if r1 is in userspace */ \ blt+ cr1,3f; /* abort if it is */ \ li r1,(n); /* will be reloaded later */ \ sth r1,PACA_TRAP_SAVE(r13); \ @@ -164,57 +219,58 @@ .globl label##_pSeries; \ label##_pSeries: \ HMT_MEDIUM; \ - DO_KVM vec; \ SET_SCRATCH0(r13); /* save r13 */ \ - EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, EXC_STD) + EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, \ + EXC_STD, KVMTEST_PR, vec) #define STD_EXCEPTION_HV(loc, vec, label) \ . = loc; \ .globl label##_hv; \ label##_hv: \ HMT_MEDIUM; \ - DO_KVM vec; \ - SET_SCRATCH0(r13); /* save r13 */ \ - EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, EXC_HV) + SET_SCRATCH0(r13); /* save r13 */ \ + EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, \ + EXC_HV, KVMTEST, vec) -#define __MASKABLE_EXCEPTION_PSERIES(vec, label, h) \ - HMT_MEDIUM; \ - DO_KVM vec; \ - SET_SCRATCH0(r13); /* save r13 */ \ - GET_PACA(r13); \ - std r9,PACA_EXGEN+EX_R9(r13); /* save r9, r10 */ \ - std r10,PACA_EXGEN+EX_R10(r13); \ +#define __SOFTEN_TEST(h) \ lbz r10,PACASOFTIRQEN(r13); \ - mfcr r9; \ cmpwi r10,0; \ - beq masked_##h##interrupt; \ - GET_SCRATCH0(r10); \ - std r10,PACA_EXGEN+EX_R13(r13); \ - std r11,PACA_EXGEN+EX_R11(r13); \ - std r12,PACA_EXGEN+EX_R12(r13); \ - ld r12,PACAKBASE(r13); /* get high part of &label */ \ - ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \ - mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ - LOAD_HANDLER(r12,label##_common) \ - mtspr SPRN_##h##SRR0,r12; \ - mfspr r12,SPRN_##h##SRR1; /* and SRR1 */ \ - mtspr SPRN_##h##SRR1,r10; \ - h##rfid; \ - b . /* prevent speculative execution */ -#define _MASKABLE_EXCEPTION_PSERIES(vec, label, h) \ - __MASKABLE_EXCEPTION_PSERIES(vec, label, h) + beq masked_##h##interrupt +#define _SOFTEN_TEST(h) __SOFTEN_TEST(h) + +#define SOFTEN_TEST_PR(vec) \ + KVMTEST_PR(vec); \ + _SOFTEN_TEST(EXC_STD) + +#define SOFTEN_TEST_HV(vec) \ + KVMTEST(vec); \ + _SOFTEN_TEST(EXC_HV) + +#define SOFTEN_TEST_HV_201(vec) \ + KVMTEST(vec); \ + _SOFTEN_TEST(EXC_STD) + +#define __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \ + HMT_MEDIUM; \ + SET_SCRATCH0(r13); /* save r13 */ \ + __EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \ + EXCEPTION_PROLOG_PSERIES_1(label##_common, h); +#define _MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \ + __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) #define MASKABLE_EXCEPTION_PSERIES(loc, vec, label) \ . = loc; \ .globl label##_pSeries; \ label##_pSeries: \ - _MASKABLE_EXCEPTION_PSERIES(vec, label, EXC_STD) + _MASKABLE_EXCEPTION_PSERIES(vec, label, \ + EXC_STD, SOFTEN_TEST_PR) #define MASKABLE_EXCEPTION_HV(loc, vec, label) \ . = loc; \ .globl label##_hv; \ label##_hv: \ - _MASKABLE_EXCEPTION_PSERIES(vec, label, EXC_HV) + _MASKABLE_EXCEPTION_PSERIES(vec, label, \ + EXC_HV, SOFTEN_TEST_HV) #ifdef CONFIG_PPC_ISERIES #define DISABLE_INTS \ |