From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v2 19/44] powerpc/64s/exception: Add EXC_HV_OR_STD, which selects HSRR if HVMODE
Date: Fri, 2 Aug 2019 20:56:44 +1000 [thread overview]
Message-ID: <20190802105709.27696-20-npiggin@gmail.com> (raw)
In-Reply-To: <20190802105709.27696-1-npiggin@gmail.com>
Add EXC_HV_OR_STD and use it to consolidate the 0x500 external
interrupt.
Executed code is unchanged.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/exceptions-64s.S | 102 +++++++++++++++++++++------
1 file changed, 79 insertions(+), 23 deletions(-)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 1fb46fb24696..60969992e9e0 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -109,6 +109,7 @@ name:
addis reg,reg,(ABS_ADDR(label))@h
/* Exception register prefixes */
+#define EXC_HV_OR_STD 2 /* depends on HVMODE */
#define EXC_HV 1
#define EXC_STD 0
@@ -205,7 +206,13 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
.abort "Bad maskable vector"
.endif
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ bne masked_Hinterrupt
+ FTR_SECTION_ELSE
+ bne masked_interrupt
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
bne masked_Hinterrupt
.else
bne masked_interrupt
@@ -237,7 +244,17 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
.if ! \set_ri
xori r10,r10,MSR_RI /* Clear MSR_RI */
.endif
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ mfspr r11,SPRN_HSRR0 /* save HSRR0 */
+ mfspr r12,SPRN_HSRR1 /* and HSRR1 */
+ mtspr SPRN_HSRR1,r10
+ FTR_SECTION_ELSE
+ mfspr r11,SPRN_SRR0 /* save SRR0 */
+ mfspr r12,SPRN_SRR1 /* and SRR1 */
+ mtspr SPRN_SRR1,r10
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
mfspr r12,SPRN_HSRR1 /* and HSRR1 */
mtspr SPRN_HSRR1,r10
@@ -247,7 +264,15 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
mtspr SPRN_SRR1,r10
.endif
LOAD_HANDLER(r10, \label\())
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ mtspr SPRN_HSRR0,r10
+ HRFI_TO_KERNEL
+ FTR_SECTION_ELSE
+ mtspr SPRN_SRR0,r10
+ RFI_TO_KERNEL
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
mtspr SPRN_HSRR0,r10
HRFI_TO_KERNEL
.else
@@ -259,14 +284,26 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
.macro EXCEPTION_PROLOG_2_VIRT label, hsrr
#ifdef CONFIG_RELOCATABLE
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ mfspr r11,SPRN_HSRR0 /* save HSRR0 */
+ FTR_SECTION_ELSE
+ mfspr r11,SPRN_SRR0 /* save SRR0 */
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
.else
mfspr r11,SPRN_SRR0 /* save SRR0 */
.endif
LOAD_HANDLER(r12, \label\())
mtctr r12
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ mfspr r12,SPRN_HSRR1 /* and HSRR1 */
+ FTR_SECTION_ELSE
+ mfspr r12,SPRN_SRR1 /* and HSRR1 */
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
mfspr r12,SPRN_HSRR1 /* and HSRR1 */
.else
mfspr r12,SPRN_SRR1 /* and HSRR1 */
@@ -275,7 +312,15 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
mtmsrd r10,1 /* Set RI (EE=0) */
bctr
#else
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ mfspr r11,SPRN_HSRR0 /* save HSRR0 */
+ mfspr r12,SPRN_HSRR1 /* and HSRR1 */
+ FTR_SECTION_ELSE
+ mfspr r11,SPRN_SRR0 /* save SRR0 */
+ mfspr r12,SPRN_SRR1 /* and SRR1 */
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
mfspr r12,SPRN_HSRR1 /* and HSRR1 */
.else
@@ -316,7 +361,13 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
.macro KVMTEST hsrr, n
lbz r10,HSTATE_IN_GUEST(r13)
cmpwi r10,0
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ bne do_kvm_H\n
+ FTR_SECTION_ELSE
+ bne do_kvm_\n
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
bne do_kvm_H\n
.else
bne do_kvm_\n
@@ -342,7 +393,13 @@ END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
std r12,HSTATE_SCRATCH0(r13)
sldi r12,r9,32
/* HSRR variants have the 0x2 bit added to their trap number */
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ ori r12,r12,(\n + 0x2)
+ FTR_SECTION_ELSE
+ ori r12,r12,(\n)
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
ori r12,r12,(\n + 0x2)
.else
ori r12,r12,(\n)
@@ -370,7 +427,13 @@ END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
89: mtocrf 0x80,r9
ld r9,\area+EX_R9(r13)
ld r10,\area+EX_R10(r13)
- .if \hsrr
+ .if \hsrr == EXC_HV_OR_STD
+ BEGIN_FTR_SECTION
+ b kvmppc_skip_Hinterrupt
+ FTR_SECTION_ELSE
+ b kvmppc_skip_interrupt
+ ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ .elseif \hsrr
b kvmppc_skip_Hinterrupt
.else
b kvmppc_skip_interrupt
@@ -469,6 +532,9 @@ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \
.macro EXCEPTION_RESTORE_REGS hsrr
/* Move original SRR0 and SRR1 into the respective regs */
ld r9,_MSR(r1)
+ .if \hsrr == EXC_HV_OR_STD
+ .error "EXC_HV_OR_STD Not implemented for EXCEPTION_RESTORE_REGS"
+ .endif
.if \hsrr
mtspr SPRN_HSRR1,r9
.else
@@ -1363,24 +1429,14 @@ ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
EXC_REAL_BEGIN(hardware_interrupt, 0x500, 0x100)
EXCEPTION_PROLOG_0 PACA_EXGEN
-BEGIN_FTR_SECTION
- EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, 0x500, 0, 0, IRQS_DISABLED
- EXCEPTION_PROLOG_2_REAL hardware_interrupt_common, EXC_HV, 1
-FTR_SECTION_ELSE
- EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x500, 0, 0, IRQS_DISABLED
- EXCEPTION_PROLOG_2_REAL hardware_interrupt_common, EXC_STD, 1
-ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+ EXCEPTION_PROLOG_1 EXC_HV_OR_STD, PACA_EXGEN, 1, 0x500, 0, 0, IRQS_DISABLED
+ EXCEPTION_PROLOG_2_REAL hardware_interrupt_common, EXC_HV_OR_STD, 1
EXC_REAL_END(hardware_interrupt, 0x500, 0x100)
EXC_VIRT_BEGIN(hardware_interrupt, 0x4500, 0x100)
EXCEPTION_PROLOG_0 PACA_EXGEN
-BEGIN_FTR_SECTION
- EXCEPTION_PROLOG_1 EXC_HV, PACA_EXGEN, 1, 0x500, 0, 0, IRQS_DISABLED
- EXCEPTION_PROLOG_2_VIRT hardware_interrupt_common, EXC_HV
-FTR_SECTION_ELSE
- EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 1, 0x500, 0, 0, IRQS_DISABLED
- EXCEPTION_PROLOG_2_VIRT hardware_interrupt_common, EXC_STD
-ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE)
+ EXCEPTION_PROLOG_1 EXC_HV_OR_STD, PACA_EXGEN, 1, 0x500, 0, 0, IRQS_DISABLED
+ EXCEPTION_PROLOG_2_VIRT hardware_interrupt_common, EXC_HV_OR_STD
EXC_VIRT_END(hardware_interrupt, 0x4500, 0x100)
TRAMP_KVM(PACA_EXGEN, 0x500)
--
2.22.0
next prev parent reply other threads:[~2019-08-02 11:43 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 10:56 [PATCH v2 00/44] powerpc/64s/exception: cleanup and macrofiy, Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 01/44] powerpc/64s/exception: machine check fwnmi remove HV case Nicholas Piggin
2019-09-02 3:29 ` Michael Ellerman
2019-08-02 10:56 ` [PATCH v2 02/44] powerpc/64s/exception: machine check remove bitrotted comment Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 03/44] powerpc/64s/exception: machine check fix KVM guest test Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 04/44] powerpc/64s/exception: machine check adjust RFI target Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 05/44] powerpc/64s/exception: machine check pseries should always run the early handler Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 06/44] powerpc/64s/exception: machine check remove machine_check_pSeries_0 branch Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 07/44] powerpc/64s/exception: machine check use correct cfar for late handler Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 08/44] powerpc/64s/powernv: machine check dump SLB contents Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 09/44] powerpc/64s/pseries: machine check convert to use common event code Nicholas Piggin
2019-08-08 5:01 ` kbuild test robot
2019-08-16 22:25 ` Michael Ellerman
2019-08-19 13:09 ` Nicholas Piggin
2019-08-08 5:50 ` kbuild test robot
2019-08-02 10:56 ` [PATCH v2 10/44] powerpc/64s/exception: machine check pseries should skip the late handler for kernel MCEs Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 11/44] powerpc/64s/exception: machine check restructure to reuse common macros Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 12/44] powerpc/64s/exception: machine check move tramp code Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 13/44] powerpc/64s/exception: simplify machine check early path Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 14/44] powerpc/64s/exception: machine check move unrecoverable handling out of line Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 15/44] powerpc/64s/exception: untangle early machine check handler branch Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 16/44] powerpc/64s/exception: machine check improve labels and comments Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 17/44] powerpc/64s/exception: Fix DAR load for handle_page_fault error case Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 18/44] powerpc/64s/exception: move head-64.h exception code to exception-64s.S Nicholas Piggin
2019-08-02 10:56 ` Nicholas Piggin [this message]
2019-08-02 10:56 ` [PATCH v2 20/44] powerpc/64s/exception: Fix performance monitor virt handler Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 21/44] powerpc/64s/exception: remove 0xb00 handler Nicholas Piggin
2019-08-21 12:18 ` Michael Ellerman
2019-08-02 10:56 ` [PATCH v2 22/44] powerpc/64s/exception: Replace PROLOG macros and EXC helpers with a gas macro Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 23/44] powerpc/64s/exception: remove EXCEPTION_PROLOG_0/1, rename _2 Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 24/44] powerpc/64s/exception: Add the virt variant of the denorm interrupt handler Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 25/44] powerpc/64s/exception: INT_HANDLER support HDAR/HDSISR and use it in HDSI Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 26/44] powerpc/64s/exception: Add INT_KVM_HANDLER gas macro Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 27/44] powerpc/64s/exception: KVM_HANDLER reorder arguments to match other macros Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 28/44] powerpc/64s/exception: Merge EXCEPTION_PROLOG_COMMON_2/3 Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 29/44] powerpc/64s/exception: Add INT_COMMON gas macro to generate common exception code Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 30/44] powerpc/64s/exception: Expand EXCEPTION_COMMON macro into caller Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 31/44] powerpc/64s/exception: Expand EXCEPTION_PROLOG_COMMON_1 and 2 " Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 32/44] powerpc/64s/exception: INT_COMMON add DAR, DSISR, reconcile options Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 33/44] powerpc/64s/exception: move interrupt entry code above the common handler Nicholas Piggin
2019-08-02 10:56 ` [PATCH v2 34/44] powerpc/64s/exception: program check handler do not branch into a macro Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 35/44] powerpc/64s/exception: Remove pointless KVM handler name bifurcation Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 36/44] powerpc/64s/exception: reduce page fault unnecessary loads Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 37/44] powerpc/64s/exception: Introduce INT_DEFINE parameter block for code generation Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 38/44] powerpc/64s/exception: Add GEN_COMMON macro that uses INT_DEFINE parameters Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 39/44] powerpc/64s/exception: Add GEN_KVM " Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 40/44] powerpc/64s/exception: Expand EXC_COMMON and EXC_COMMON_ASYNC macros Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 41/44] powerpc/64s/exception: Move all interrupt handlers to new style code gen macros Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 42/44] powerpc/64s/exception: Remove old INT_ENTRY macro Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 43/44] powerpc/64s/exception: Remove old INT_COMMON macro Nicholas Piggin
2019-08-02 10:57 ` [PATCH v2 44/44] powerpc/64s/exception: Remove old INT_KVM_HANDLER Nicholas Piggin
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