From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v2 36/52] powerpc/64s/exception: use common macro for windup
Date: Thu, 20 Jun 2019 15:14:43 +1000 [thread overview]
Message-ID: <20190620051459.29573-37-npiggin@gmail.com> (raw)
In-Reply-To: <20190620051459.29573-1-npiggin@gmail.com>
No generated code change. File is change is in bug table line numbers.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/exceptions-64s.S | 112 +++++++++------------------
1 file changed, 36 insertions(+), 76 deletions(-)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index cce75adf2095..2412b5269e25 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -417,6 +417,38 @@ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \
EXCEPTION_PROLOG_COMMON_2(area); \
EXCEPTION_PROLOG_COMMON_3(trap)
+/*
+ * Restore all registers including H/SRR0/1 saved in a stack frame of a
+ * standard exception.
+ */
+.macro EXCEPTION_RESTORE_REGS hsrr
+ /* Move original SRR0 and SRR1 into the respective regs */
+ ld r9,_MSR(r1)
+ .if \hsrr
+ mtspr SPRN_HSRR1,r9
+ .else
+ mtspr SPRN_SRR1,r9
+ .endif
+ ld r9,_NIP(r1)
+ .if \hsrr
+ mtspr SPRN_HSRR0,r9
+ .else
+ mtspr SPRN_SRR0,r9
+ .endif
+ ld r9,_CTR(r1)
+ mtctr r9
+ ld r9,_XER(r1)
+ mtxer r9
+ ld r9,_LINK(r1)
+ mtlr r9
+ ld r9,_CCR(r1)
+ mtcr r9
+ REST_8GPRS(2, r1)
+ REST_4GPRS(10, r1)
+ REST_GPR(0, r1)
+ /* restore original r1. */
+ ld r1,GPR1(r1)
+.endm
#define RUNLATCH_ON \
BEGIN_FTR_SECTION \
@@ -906,29 +938,7 @@ EXC_COMMON_BEGIN(system_reset_common)
ld r10,SOFTE(r1)
stb r10,PACAIRQSOFTMASK(r13)
- /*
- * Keep below code in synch with MACHINE_CHECK_HANDLER_WINDUP.
- * Should share common bits...
- */
-
- /* Move original SRR0 and SRR1 into the respective regs */
- ld r9,_MSR(r1)
- mtspr SPRN_SRR1,r9
- ld r9,_NIP(r1)
- mtspr SPRN_SRR0,r9
- ld r9,_CTR(r1)
- mtctr r9
- ld r9,_XER(r1)
- mtxer r9
- ld r9,_LINK(r1)
- mtlr r9
- ld r9,_CCR(r1)
- mtcr r9
- REST_8GPRS(2, r1)
- REST_4GPRS(10, r1)
- REST_GPR(0, r1)
- /* restore original r1. */
- ld r1,GPR1(r1)
+ EXCEPTION_RESTORE_REGS EXC_STD
RFI_TO_USER_OR_KERNEL
@@ -1074,24 +1084,7 @@ EXC_COMMON_BEGIN(machine_check_common)
lhz r12,PACA_IN_MCE(r13); \
subi r12,r12,1; \
sth r12,PACA_IN_MCE(r13); \
- /* Move original SRR0 and SRR1 into the respective regs */ \
- ld r9,_MSR(r1); \
- mtspr SPRN_SRR1,r9; \
- ld r9,_NIP(r1); \
- mtspr SPRN_SRR0,r9; \
- ld r9,_CTR(r1); \
- mtctr r9; \
- ld r9,_XER(r1); \
- mtxer r9; \
- ld r9,_LINK(r1); \
- mtlr r9; \
- ld r9,_CCR(r1); \
- mtcr r9; \
- REST_8GPRS(2, r1); \
- REST_4GPRS(10, r1); \
- REST_GPR(0, r1); \
- /* restore original r1. */ \
- ld r1,GPR1(r1)
+ EXCEPTION_RESTORE_REGS EXC_STD
#ifdef CONFIG_PPC_P7_NAP
/*
@@ -1774,48 +1767,15 @@ TRAMP_REAL_BEGIN(hmi_exception_early)
cmpdi cr0,r3,0
bne 1f
- /* Windup the stack. */
- /* Move original HSRR0 and HSRR1 into the respective regs */
- ld r9,_MSR(r1)
- mtspr SPRN_HSRR1,r9
- ld r9,_NIP(r1)
- mtspr SPRN_HSRR0,r9
- ld r9,_CTR(r1)
- mtctr r9
- ld r9,_XER(r1)
- mtxer r9
- ld r9,_LINK(r1)
- mtlr r9
- ld r9,_CCR(r1)
- mtcr r9
- REST_8GPRS(2, r1)
- REST_4GPRS(10, r1)
- REST_GPR(0, r1)
- ld r1,GPR1(r1)
+ EXCEPTION_RESTORE_REGS EXC_HV
HRFI_TO_USER_OR_KERNEL
1:
- ld r9,_MSR(r1)
- mtspr SPRN_HSRR1,r9
- ld r9,_NIP(r1)
- mtspr SPRN_HSRR0,r9
- ld r9,_CTR(r1)
- mtctr r9
- ld r9,_XER(r1)
- mtxer r9
- ld r9,_LINK(r1)
- mtlr r9
- ld r9,_CCR(r1)
- mtcr r9
- REST_8GPRS(2, r1)
- REST_4GPRS(10, r1)
- REST_GPR(0, r1)
- ld r1,GPR1(r1)
-
/*
* Go to virtual mode and pull the HMI event information from
* firmware.
*/
+ EXCEPTION_RESTORE_REGS EXC_HV
SET_SCRATCH0(r13)
EXCEPTION_PROLOG_0 PACA_EXGEN
b tramp_real_hmi_exception
--
2.20.1
next prev parent reply other threads:[~2019-06-20 6:32 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 ` [PATCH v2 03/52] powerpc/64s/exception: consolidate EXCEPTION_PROLOG_2 with _NORI variant Nicholas Piggin
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 ` Nicholas Piggin [this message]
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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