From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v2 03/52] powerpc/64s/exception: consolidate EXCEPTION_PROLOG_2 with _NORI variant
Date: Thu, 20 Jun 2019 15:14:10 +1000 [thread overview]
Message-ID: <20190620051459.29573-4-npiggin@gmail.com> (raw)
In-Reply-To: <20190620051459.29573-1-npiggin@gmail.com>
Switch to a gas macro that conditionally expands the RI clearing
instruction.
No generated code change.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/include/asm/exception-64s.h | 43 ++++++------------------
arch/powerpc/kernel/exceptions-64s.S | 12 +++----
2 files changed, 17 insertions(+), 38 deletions(-)
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 1496e4089cee..94c4992188a7 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -319,32 +319,11 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define EXCEPTION_PROLOG_1(area, extra, vec) \
_EXCEPTION_PROLOG_1(area, extra, vec)
-.macro EXCEPTION_PROLOG_2 label, hsrr
- ld r10,PACAKMSR(r13) /* get MSR value for kernel */
- .if \hsrr
- mfspr r11,SPRN_HSRR0 /* save HSRR0 */
- .else
- mfspr r11,SPRN_SRR0 /* save SRR0 */
- .endif
- LOAD_HANDLER(r12,\label\())
- .if \hsrr
- mtspr SPRN_HSRR0,r12
- mfspr r12,SPRN_HSRR1 /* and HSRR1 */
- mtspr SPRN_HSRR1,r10
- HRFI_TO_KERNEL
- .else
- mtspr SPRN_SRR0,r12
- mfspr r12,SPRN_SRR1 /* and SRR1 */
- mtspr SPRN_SRR1,r10
- RFI_TO_KERNEL
- .endif
- b . /* prevent speculative execution */
-.endm
-
-/* _NORI variant keeps MSR_RI clear */
-.macro EXCEPTION_PROLOG_2_NORI label, hsrr
+.macro EXCEPTION_PROLOG_2 label, hsrr, set_ri
ld r10,PACAKMSR(r13) /* get MSR value for kernel */
+ .if ! \set_ri
xori r10,r10,MSR_RI /* Clear MSR_RI */
+ .endif
.if \hsrr
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
.else
@@ -369,7 +348,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(area); \
EXCEPTION_PROLOG_1(area, extra, vec); \
- EXCEPTION_PROLOG_2 label, h
+ EXCEPTION_PROLOG_2 label, h, 1
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
/*
@@ -438,7 +417,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define EXCEPTION_PROLOG_NORI(area, label, h, extra, vec) \
EXCEPTION_PROLOG_0(area); \
EXCEPTION_PROLOG_1(area, extra, vec); \
- EXCEPTION_PROLOG_2_NORI label, h
+ EXCEPTION_PROLOG_2 label, h, 0
#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
.macro KVMTEST hsrr, n
@@ -595,14 +574,14 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define STD_EXCEPTION_OOL(vec, label) \
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, vec); \
- EXCEPTION_PROLOG_2 label, EXC_STD
+ EXCEPTION_PROLOG_2 label, EXC_STD, 1
#define STD_EXCEPTION_HV(loc, vec, label) \
EXCEPTION_PROLOG(PACA_EXGEN, label, EXC_HV, KVMTEST_HV, vec)
#define STD_EXCEPTION_HV_OOL(vec, label) \
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, vec); \
- EXCEPTION_PROLOG_2 label, EXC_HV
+ EXCEPTION_PROLOG_2 label, EXC_HV, 1
#define STD_RELON_EXCEPTION(loc, vec, label) \
/* No guest interrupts come through here */ \
@@ -666,21 +645,21 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(PACA_EXGEN); \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask); \
- EXCEPTION_PROLOG_2 label, h
+ EXCEPTION_PROLOG_2 label, h, 1
#define MASKABLE_EXCEPTION(vec, label, bitmask) \
__MASKABLE_EXCEPTION(vec, label, EXC_STD, SOFTEN_TEST_PR, bitmask)
#define MASKABLE_EXCEPTION_OOL(vec, label, bitmask) \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_PR, vec, bitmask);\
- EXCEPTION_PROLOG_2 label, EXC_STD
+ EXCEPTION_PROLOG_2 label, EXC_STD, 1
#define MASKABLE_EXCEPTION_HV(vec, label, bitmask) \
__MASKABLE_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask)
#define MASKABLE_EXCEPTION_HV_OOL(vec, label, bitmask) \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\
- EXCEPTION_PROLOG_2 label, EXC_HV
+ EXCEPTION_PROLOG_2 label, EXC_HV, 1
#define __MASKABLE_RELON_EXCEPTION(vec, label, h, extra, bitmask) \
SET_SCRATCH0(r13); /* save r13 */ \
@@ -693,7 +672,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define MASKABLE_RELON_EXCEPTION_OOL(vec, label, bitmask) \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_PR, vec, bitmask);\
- EXCEPTION_PROLOG_2 label, EXC_STD
+ EXCEPTION_PROLOG_2 label, EXC_STD, 1
#define MASKABLE_RELON_EXCEPTION_HV(vec, label, bitmask) \
__MASKABLE_RELON_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 65d3eecdef53..75becb248d61 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -356,7 +356,7 @@ machine_check_pSeries_0:
* nested machine check corrupts it. machine_check_common enables
* MSR_RI.
*/
- EXCEPTION_PROLOG_2_NORI machine_check_common, EXC_STD
+ EXCEPTION_PROLOG_2 machine_check_common, EXC_STD, 0
TRAMP_KVM_SKIP(PACA_EXMC, 0x200)
@@ -598,7 +598,7 @@ EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, 0x300)
mfspr r11,SPRN_DSISR
std r10,PACA_EXGEN+EX_DAR(r13)
stw r11,PACA_EXGEN+EX_DSISR(r13)
-EXCEPTION_PROLOG_2 data_access_common, EXC_STD
+EXCEPTION_PROLOG_2 data_access_common, EXC_STD, 1
EXC_VIRT_BEGIN(data_access, 0x4300, 0x80)
SET_SCRATCH0(r13) /* save r13 */
@@ -645,7 +645,7 @@ TRAMP_REAL_BEGIN(tramp_real_data_access_slb)
EXCEPTION_PROLOG_1(PACA_EXSLB, KVMTEST_PR, 0x380)
mfspr r10,SPRN_DAR
std r10,PACA_EXSLB+EX_DAR(r13)
-EXCEPTION_PROLOG_2 data_access_slb_common, EXC_STD
+EXCEPTION_PROLOG_2 data_access_slb_common, EXC_STD, 1
EXC_VIRT_BEGIN(data_access_slb, 0x4380, 0x80)
SET_SCRATCH0(r13) /* save r13 */
@@ -774,7 +774,7 @@ EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, 0x600)
mfspr r11,SPRN_DSISR
std r10,PACA_EXGEN+EX_DAR(r13)
stw r11,PACA_EXGEN+EX_DSISR(r13)
-EXCEPTION_PROLOG_2 alignment_common, EXC_STD
+EXCEPTION_PROLOG_2 alignment_common, EXC_STD, 1
EXC_REAL_END(alignment, 0x600, 0x100)
EXC_VIRT_BEGIN(alignment, 0x4600, 0x100)
@@ -1320,7 +1320,7 @@ EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x100)
#endif
KVMTEST_HV(0x1500)
- EXCEPTION_PROLOG_2 denorm_common, EXC_HV
+ EXCEPTION_PROLOG_2 denorm_common, EXC_HV, 1
EXC_REAL_END(denorm_exception_hv, 0x1500, 0x100)
#ifdef CONFIG_PPC_DENORMALISATION
@@ -1442,7 +1442,7 @@ EXC_VIRT_NONE(0x5800, 0x100)
std r12,PACA_EXGEN+EX_R12(r13); \
GET_SCRATCH0(r10); \
std r10,PACA_EXGEN+EX_R13(r13); \
- EXCEPTION_PROLOG_2 soft_nmi_common, _H
+ EXCEPTION_PROLOG_2 soft_nmi_common, _H, 1
/*
* Branch to soft_nmi_interrupt using the emergency stack. The emergency
--
2.20.1
next prev parent reply other threads:[~2019-06-20 5:23 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-20 5:14 [PATCH v2 00/52] powerpc/64s interrupt handler cleanups, gasification Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 01/52] powerpc/64s/exception: fix line wrap and semicolon inconsistencies in macros Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 02/52] powerpc/64s/exception: remove H concatenation for EXC_HV variants Nicholas Piggin
2019-06-20 5:14 ` Nicholas Piggin [this message]
2019-06-20 5:14 ` [PATCH v2 04/52] powerpc/64s/exception: move and tidy EXCEPTION_PROLOG_2 variants Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 05/52] powerpc/64s/exception: fix sreset KVM test code Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 06/52] powerpc/64s/exception: remove the "extra" macro parameter Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 07/52] powerpc/64s/exception: consolidate maskable and non-maskable prologs Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 08/52] powerpc/64s/exception: merge KVM handler and skip variants Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 09/52] powerpc/64s/exception: KVM handler can set the HSRR trap bit Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 10/52] powerpc/64s/exception: Make EXCEPTION_PROLOG_0 a gas macro for consistency with others Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 11/52] powerpc/64s/exception: Move EXCEPTION_COMMON handler and return branches into callers Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 12/52] powerpc/64s/exception: Move EXCEPTION_COMMON additions " Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 13/52] powerpc/64s/exception: unwind exception-64s.h macros Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 14/52] powerpc/64s/exception: improve 0x500 handler code Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 15/52] powerpc/64s/exception: move EXCEPTION_PROLOG_2* to a more logical place Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 16/52] powerpc/64s/exception: remove STD_EXCEPTION_COMMON variants Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 17/52] powerpc/64s/exception: move KVM related code together Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 18/52] powerpc/64s/exception: move exception-64s.h code to exception-64s.S where it is used Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 19/52] powerpc/64s/exception: move head-64.h " Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 20/52] powerpc/64s/exception: remove __BRANCH_TO_KVM Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 21/52] powerpc/64s/exception: remove unused BRANCH_TO_COMMON Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 22/52] powerpc/64s/exception: use a gas macro for system call handler code Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 23/52] powerpc/64s/exception: fix indenting irregularities Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 24/52] powerpc/64s/exception: generate regs clear instructions using .rept Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 25/52] powerpc/64s/exception: remove bad stack branch Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 26/52] powerpc/64s/exception: remove pointless EXCEPTION_PROLOG macro indirection Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 27/52] powerpc/64s/exception: move paca save area offsets into exception-64s.S Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 28/52] powerpc/64s/exception: clean up system call entry Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 29/52] powerpc/64s/exception: avoid SPR RAW scoreboard stall in real mode entry Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 30/52] powerpc/64s/exception: optimise system_reset for idle, clean up non-idle case Nicholas Piggin
2019-06-20 5:41 ` Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 31/52] powerpc/64s/exception: mtmsrd L=1 cleanup Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 32/52] powerpc/64s/exception: windup use r9 consistently to restore SPRs Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 33/52] powerpc/64s/exception: move machine check windup in_mce handling Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 34/52] powerpc/64s/exception: simplify hmi windup code Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 35/52] powerpc/64s/exception: shuffle windup code around Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 36/52] powerpc/64s/exception: use common macro for windup Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 37/52] powerpc/64s/exception: add dar and dsisr options to exception macro Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 38/52] powerpc/64s/exception: machine check use standard macros to save dar/dsisr Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 39/52] powerpc/64s/exception: denorm handler use standard scratch save macro Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 40/52] powerpc/64s/exception: move SET_SCRATCH0 into EXCEPTION_PROLOG_0 Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 41/52] powerpc/tm: update comment about interrupt re-entrancy Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 42/52] powerpc/64s/exception: machine check fwnmi does not trigger when in HV mode Nicholas Piggin
2019-06-20 9:26 ` Mahesh Jagannath Salgaonkar
2019-06-20 9:50 ` Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 43/52] powerpc/64s/exception: machine check early only runs " Nicholas Piggin
2019-06-20 9:53 ` Mahesh J Salgaonkar
2019-06-20 10:16 ` Nicholas Piggin
2019-06-20 10:57 ` Mahesh Jagannath Salgaonkar
2019-06-20 5:14 ` [PATCH v2 44/52] powerpc/64s/exception: separate pseries and powernv mce delivery paths Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 45/52] powerpc/64s/exception: machine check windup restore cfar for host delivery Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 46/52] powerpc/64s/exception: fix machine check early should not set AMR Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 47/52] powerpc/64s/exception: machine check restructure handler to be more regular Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 48/52] powerpc/64s/exception: simplify machine check early path Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 49/52] powerpc/64s/exceptions: machine check move unrecoverable handling out of line Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 50/52] powerpc/64s/exception: untangle early machine check handler Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 51/52] powerpc/64s/exception: machine check improve branch labels Nicholas Piggin
2019-06-20 5:14 ` [PATCH v2 52/52] powerpc/64s/exception: add missing branch to self after RFI Nicholas Piggin
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