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powerpc/64s/exception: remove the "extra" macro parameter

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Rather than pass in the soft-masking and KVM tests via macro that is
passed to another macro to expand it, switch to usig gas macros and
conditionally expand the soft-masking and KVM tests.

The system reset with its idle test is open coded as it is a one-off.

No generated code change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin
2019-06-22 23:15:15 +10:00
committed by Michael Ellerman
parent 8f528359ef
commit a7c1ca19c2
2 changed files with 114 additions and 122 deletions
Download Patch File Download Diff File Expand all files Collapse all files

78
arch/powerpc/kernel/exceptions-64s.S
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@@ -107,6 +107,17 @@ __start_interrupts:
EXC_VIRT_NONE(0x4000, 0x100)
EXC_REAL_BEGIN(system_reset, 0x100, 0x100)
SET_SCRATCH0(r13)
EXCEPTION_PROLOG_0(PACA_EXNMI)
/* This is EXCEPTION_PROLOG_1 with the idle feature section added */
OPT_SAVE_REG_TO_PACA(PACA_EXNMI+EX_PPR, r9, CPU_FTR_HAS_PPR)
OPT_SAVE_REG_TO_PACA(PACA_EXNMI+EX_CFAR, r10, CPU_FTR_CFAR)
INTERRUPT_TO_KERNEL
SAVE_CTR(r10, PACA_EXNMI)
mfcr r9
#ifdef CONFIG_PPC_P7_NAP
/*
* If running native on arch 2.06 or later, check if we are waking up
@@ -116,30 +127,29 @@ EXC_VIRT_NONE(0x4000, 0x100)
* but we branch to the 0xc000... address so we can turn on relocation
* with mtmsr.
*/
#define IDLETEST(n) \
BEGIN_FTR_SECTION ; \
mfspr r10,SPRN_SRR1 ; \
rlwinm. r10,r10,47-31,30,31 ; \
beq- 1f ; \
cmpwi cr1,r10,2 ; \
mfspr r3,SPRN_SRR1 ; \
bltlr cr1 ; /* no state loss, return to idle caller */ \
BRANCH_TO_C000(r10, system_reset_idle_common) ; \
1: \
END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206) ; \
KVMTEST_PR(n)
#else
#define IDLETEST KVMTEST_PR
BEGIN_FTR_SECTION
mfspr r10,SPRN_SRR1
rlwinm. r10,r10,47-31,30,31
beq- 1f
cmpwi cr1,r10,2
mfspr r3,SPRN_SRR1
bltlr cr1 /* no state loss, return to idle caller */
BRANCH_TO_C000(r10, system_reset_idle_common)
1:
END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
#endif
EXC_REAL_BEGIN(system_reset, 0x100, 0x100)
SET_SCRATCH0(r13)
KVMTEST EXC_STD 0x100
std r11,PACA_EXNMI+EX_R11(r13)
std r12,PACA_EXNMI+EX_R12(r13)
GET_SCRATCH0(r10)
std r10,PACA_EXNMI+EX_R13(r13)
EXCEPTION_PROLOG_2_REAL system_reset_common, EXC_STD, 0
/*
* MSR_RI is not enabled, because PACA_EXNMI and nmi stack is
* being used, so a nested NMI exception would corrupt it.
*/
EXCEPTION_PROLOG_NORI(PACA_EXNMI, system_reset_common, EXC_STD,
IDLETEST, 0x100)
EXC_REAL_END(system_reset, 0x100, 0x100)
EXC_VIRT_NONE(0x4100, 0x100)
@@ -246,7 +256,7 @@ TRAMP_REAL_BEGIN(system_reset_fwnmi)
SET_SCRATCH0(r13) /* save r13 */
/* See comment at system_reset exception */
EXCEPTION_PROLOG_NORI(PACA_EXNMI, system_reset_common, EXC_STD,
NOTEST, 0x100)
0, 0x100)
#endif /* CONFIG_PPC_PSERIES */
@@ -265,7 +275,7 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE)
EXC_REAL_END(machine_check, 0x200, 0x100)
EXC_VIRT_NONE(0x4200, 0x100)
TRAMP_REAL_BEGIN(machine_check_common_early)
EXCEPTION_PROLOG_1(PACA_EXMC, NOTEST, 0x200)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXMC, 0, 0x200
/*
* Register contents:
* R13 = PACA
@@ -350,7 +360,7 @@ BEGIN_FTR_SECTION
b machine_check_common_early
END_FTR_SECTION_IFCLR(CPU_FTR_HVMODE)
machine_check_pSeries_0:
EXCEPTION_PROLOG_1(PACA_EXMC, KVMTEST_PR, 0x200)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXMC, 1, 0x200
/*
* MSR_RI is not enabled, because PACA_EXMC is being used, so a
* nested machine check corrupts it. machine_check_common enables
@@ -588,7 +598,7 @@ EXCEPTION_PROLOG_0(PACA_EXGEN)
EXC_REAL_END(data_access, 0x300, 0x80)
TRAMP_REAL_BEGIN(tramp_real_data_access)
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, 0x300)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x300
/*
* DAR/DSISR must be read before setting MSR[RI], because
* a d-side MCE will clobber those registers so is not
@@ -603,7 +613,7 @@ EXCEPTION_PROLOG_2_REAL data_access_common, EXC_STD, 1
EXC_VIRT_BEGIN(data_access, 0x4300, 0x80)
SET_SCRATCH0(r13) /* save r13 */
EXCEPTION_PROLOG_0(PACA_EXGEN)
EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, 0x300)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, 0x300
mfspr r10,SPRN_DAR
mfspr r11,SPRN_DSISR
std r10,PACA_EXGEN+EX_DAR(r13)
@@ -642,7 +652,7 @@ EXCEPTION_PROLOG_0(PACA_EXSLB)
EXC_REAL_END(data_access_slb, 0x380, 0x80)
TRAMP_REAL_BEGIN(tramp_real_data_access_slb)
EXCEPTION_PROLOG_1(PACA_EXSLB, KVMTEST_PR, 0x380)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXSLB, 1, 0x380
mfspr r10,SPRN_DAR
std r10,PACA_EXSLB+EX_DAR(r13)
EXCEPTION_PROLOG_2_REAL data_access_slb_common, EXC_STD, 1
@@ -650,7 +660,7 @@ EXCEPTION_PROLOG_2_REAL data_access_slb_common, EXC_STD, 1
EXC_VIRT_BEGIN(data_access_slb, 0x4380, 0x80)
SET_SCRATCH0(r13) /* save r13 */
EXCEPTION_PROLOG_0(PACA_EXSLB)
EXCEPTION_PROLOG_1(PACA_EXSLB, NOTEST, 0x380)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXSLB, 0, 0x380
mfspr r10,SPRN_DAR
std r10,PACA_EXSLB+EX_DAR(r13)
EXCEPTION_PROLOG_2_VIRT data_access_slb_common, EXC_STD
@@ -705,11 +715,11 @@ ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
EXC_REAL_BEGIN(instruction_access_slb, 0x480, 0x80)
EXCEPTION_PROLOG(PACA_EXSLB, instruction_access_slb_common, EXC_STD, KVMTEST_PR, 0x480);
EXCEPTION_PROLOG(PACA_EXSLB, instruction_access_slb_common, EXC_STD, 1, 0x480);
EXC_REAL_END(instruction_access_slb, 0x480, 0x80)
EXC_VIRT_BEGIN(instruction_access_slb, 0x4480, 0x80)
EXCEPTION_RELON_PROLOG(PACA_EXSLB, instruction_access_slb_common, EXC_STD, NOTEST, 0x480);
EXCEPTION_RELON_PROLOG(PACA_EXSLB, instruction_access_slb_common, EXC_STD, 0, 0x480);
EXC_VIRT_END(instruction_access_slb, 0x4480, 0x80)
TRAMP_KVM(PACA_EXSLB, 0x480)
@@ -757,7 +767,7 @@ hardware_interrupt_relon_hv:
IRQS_DISABLED)
FTR_SECTION_ELSE
__MASKABLE_RELON_EXCEPTION(0x500, hardware_interrupt_common,
EXC_STD, SOFTEN_TEST_PR, IRQS_DISABLED)
EXC_STD, 1, IRQS_DISABLED)
ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE)
EXC_VIRT_END(hardware_interrupt, 0x4500, 0x100)
@@ -769,7 +779,7 @@ EXC_COMMON_ASYNC(hardware_interrupt_common, 0x500, do_IRQ)
EXC_REAL_BEGIN(alignment, 0x600, 0x100)
SET_SCRATCH0(r13) /* save r13 */
EXCEPTION_PROLOG_0(PACA_EXGEN)
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, 0x600)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x600
mfspr r10,SPRN_DAR
mfspr r11,SPRN_DSISR
std r10,PACA_EXGEN+EX_DAR(r13)
@@ -780,7 +790,7 @@ EXC_REAL_END(alignment, 0x600, 0x100)
EXC_VIRT_BEGIN(alignment, 0x4600, 0x100)
SET_SCRATCH0(r13) /* save r13 */
EXCEPTION_PROLOG_0(PACA_EXGEN)
EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, 0x600)
EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, 0x600
mfspr r10,SPRN_DAR
mfspr r11,SPRN_DSISR
std r10,PACA_EXGEN+EX_DAR(r13)
@@ -946,7 +956,7 @@ EXC_COMMON(trap_0b_common, 0xb00, unknown_exception)
GET_PACA(r13); \
std r10,PACA_EXGEN+EX_R10(r13); \
INTERRUPT_TO_KERNEL; \
KVMTEST_PR(0xc00); /* uses r10, branch to do_kvm_0xc00_system_call */ \
KVMTEST EXC_STD 0xc00 ; /* uses r10, branch to do_kvm_0xc00_system_call */ \
HMT_MEDIUM; \
mfctr r9;
@@ -1109,7 +1119,7 @@ __TRAMP_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60, IRQS_DISABLED)
EXC_VIRT_NONE(0x4e60, 0x20)
TRAMP_KVM_HV(PACA_EXGEN, 0xe60)
TRAMP_REAL_BEGIN(hmi_exception_early)
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, 0xe60)
EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, 0xe60
mr r10,r1 /* Save r1 */
ld r1,PACAEMERGSP(r13) /* Use emergency stack for realmode */
subi r1,r1,INT_FRAME_SIZE /* alloc stack frame */
@@ -1311,7 +1321,7 @@ EXC_VIRT_NONE(0x5400, 0x100)
EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x100)
mtspr SPRN_SPRG_HSCRATCH0,r13
EXCEPTION_PROLOG_0(PACA_EXGEN)
EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, 0x1500)
EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 0, 0x1500
#ifdef CONFIG_PPC_DENORMALISATION
mfspr r10,SPRN_HSRR1
@@ -1319,7 +1329,7 @@ EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x100)
bne+ denorm_assist
#endif
KVMTEST_HV(0x1500)
KVMTEST EXC_HV 0x1500
EXCEPTION_PROLOG_2_REAL denorm_common, EXC_HV, 1
EXC_REAL_END(denorm_exception_hv, 0x1500, 0x100)