From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
To: mpe@ellerman.id.au
Cc: mikey@neuling.org, maddy@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2 02/10] KVM: PPC: Book3S HV: Save/restore new PMU registers
Date: Wed, 1 Jul 2020 05:20:54 -0400 [thread overview]
Message-ID: <1593595262-1433-3-git-send-email-atrajeev@linux.vnet.ibm.com> (raw)
In-Reply-To: <1593595262-1433-1-git-send-email-atrajeev@linux.vnet.ibm.com>
PowerISA v3.1 has added new performance monitoring unit (PMU)
special purpose registers (SPRs). They are
Monitor Mode Control Register 3 (MMCR3)
Sampled Instruction Event Register A (SIER2)
Sampled Instruction Event Register B (SIER3)
Patch addes support to save/restore these new
SPRs while entering/exiting guest.
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/kvm_book3s_asm.h | 2 +-
arch/powerpc/include/asm/kvm_host.h | 4 ++--
arch/powerpc/kernel/asm-offsets.c | 3 +++
arch/powerpc/kvm/book3s_hv.c | 6 ++++--
arch/powerpc/kvm/book3s_hv_interrupts.S | 8 ++++++++
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 24 ++++++++++++++++++++++++
6 files changed, 42 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_book3s_asm.h b/arch/powerpc/include/asm/kvm_book3s_asm.h
index 45704f2..078f464 100644
--- a/arch/powerpc/include/asm/kvm_book3s_asm.h
+++ b/arch/powerpc/include/asm/kvm_book3s_asm.h
@@ -119,7 +119,7 @@ struct kvmppc_host_state {
void __iomem *xive_tima_virt;
u32 saved_xirr;
u64 dabr;
- u64 host_mmcr[7]; /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER */
+ u64 host_mmcr[10]; /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER, MMCR3, SIER2/3 */
u32 host_pmc[8];
u64 host_purr;
u64 host_spurr;
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 7e2d061..d718061 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -637,12 +637,12 @@ struct kvm_vcpu_arch {
u32 ccr1;
u32 dbsr;
- u64 mmcr[5];
+ u64 mmcr[6];
u32 pmc[8];
u32 spmc[2];
u64 siar;
u64 sdar;
- u64 sier;
+ u64 sier[3];
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
u64 tfhar;
u64 texasr;
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 6657dc6..20a8b1e 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -696,6 +696,9 @@ int main(void)
HSTATE_FIELD(HSTATE_SDAR, host_mmcr[4]);
HSTATE_FIELD(HSTATE_MMCR2, host_mmcr[5]);
HSTATE_FIELD(HSTATE_SIER, host_mmcr[6]);
+ HSTATE_FIELD(HSTATE_MMCR3, host_mmcr[7]);
+ HSTATE_FIELD(HSTATE_SIER2, host_mmcr[8]);
+ HSTATE_FIELD(HSTATE_SIER3, host_mmcr[9]);
HSTATE_FIELD(HSTATE_PMC1, host_pmc[0]);
HSTATE_FIELD(HSTATE_PMC2, host_pmc[1]);
HSTATE_FIELD(HSTATE_PMC3, host_pmc[2]);
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 6bf66649..c265800 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1698,7 +1698,8 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
*val = get_reg_val(id, vcpu->arch.sdar);
break;
case KVM_REG_PPC_SIER:
- *val = get_reg_val(id, vcpu->arch.sier);
+ i = id - KVM_REG_PPC_SIER;
+ *val = get_reg_val(id, vcpu->arch.sier[i]);
break;
case KVM_REG_PPC_IAMR:
*val = get_reg_val(id, vcpu->arch.iamr);
@@ -1919,7 +1920,8 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
vcpu->arch.sdar = set_reg_val(id, *val);
break;
case KVM_REG_PPC_SIER:
- vcpu->arch.sier = set_reg_val(id, *val);
+ i = id - KVM_REG_PPC_SIER;
+ vcpu->arch.sier[i] = set_reg_val(id, *val);
break;
case KVM_REG_PPC_IAMR:
vcpu->arch.iamr = set_reg_val(id, *val);
diff --git a/arch/powerpc/kvm/book3s_hv_interrupts.S b/arch/powerpc/kvm/book3s_hv_interrupts.S
index 63fd81f..59822cb 100644
--- a/arch/powerpc/kvm/book3s_hv_interrupts.S
+++ b/arch/powerpc/kvm/book3s_hv_interrupts.S
@@ -140,6 +140,14 @@ BEGIN_FTR_SECTION
std r8, HSTATE_MMCR2(r13)
std r9, HSTATE_SIER(r13)
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+BEGIN_FTR_SECTION
+ mfspr r5, SPRN_MMCR3
+ mfspr r6, SPRN_SIER2
+ mfspr r7, SPRN_SIER3
+ std r5, HSTATE_MMCR3(r13)
+ std r6, HSTATE_SIER2(r13)
+ std r7, HSTATE_SIER3(r13)
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31)
mfspr r3, SPRN_PMC1
mfspr r5, SPRN_PMC2
mfspr r6, SPRN_PMC3
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 7194389..57b6c14 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -3436,6 +3436,14 @@ END_FTR_SECTION_IFSET(CPU_FTR_PMAO_BUG)
mtspr SPRN_SIAR, r7
mtspr SPRN_SDAR, r8
BEGIN_FTR_SECTION
+ ld r5, VCPU_MMCR + 40(r4)
+ ld r6, VCPU_SIER + 8(r4)
+ ld r7, VCPU_SIER + 16(r4)
+ mtspr SPRN_MMCR3, r5
+ mtspr SPRN_SIER2, r6
+ mtspr SPRN_SIER3, r7
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31)
+BEGIN_FTR_SECTION
ld r5, VCPU_MMCR + 24(r4)
ld r6, VCPU_SIER(r4)
mtspr SPRN_MMCR2, r5
@@ -3496,6 +3504,14 @@ BEGIN_FTR_SECTION
mtspr SPRN_MMCR2, r8
mtspr SPRN_SIER, r9
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+BEGIN_FTR_SECTION
+ ld r5, HSTATE_MMCR3(r13)
+ ld r6, HSTATE_SIER2(r13)
+ ld r7, HSTATE_SIER3(r13)
+ mtspr SPRN_MMCR3, r5
+ mtspr SPRN_SIER2, r6
+ mtspr SPRN_SIER3, r7
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31)
mtspr SPRN_MMCR0, r3
isync
mtlr r0
@@ -3555,6 +3571,14 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
BEGIN_FTR_SECTION
std r10, VCPU_MMCR + 24(r9)
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+BEGIN_FTR_SECTION
+ mfspr r5, SPRN_MMCR3
+ mfspr r6, SPRN_SIER2
+ mfspr r7, SPRN_SIER3
+ std r5, VCPU_MMCR + 40(r9)
+ std r6, VCPU_SIER + 8(r9)
+ std r7, VCPU_SIER + 16(r9)
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31)
std r7, VCPU_SIAR(r9)
std r8, VCPU_SDAR(r9)
mfspr r3, SPRN_PMC1
--
1.8.3.1
next prev parent reply other threads:[~2020-07-01 9:54 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 9:20 [PATCH v2 00/10] powerpc/perf: Add support for power10 PMU Hardware Athira Rajeev
2020-07-01 9:20 ` [PATCH v2 01/10] powerpc/perf: Add support for ISA3.1 PMU SPRs Athira Rajeev
2020-07-08 11:02 ` Michael Ellerman
2020-07-09 1:53 ` Athira Rajeev
2020-07-13 12:50 ` Michael Ellerman
2020-07-15 6:07 ` Athira Rajeev
2020-07-01 9:20 ` Athira Rajeev [this message]
2020-07-01 11:11 ` [PATCH v2 02/10] KVM: PPC: Book3S HV: Save/restore new PMU registers Paul Mackerras
2020-07-02 6:22 ` Athira Rajeev
2020-07-07 6:13 ` Michael Neuling
2020-07-01 9:20 ` [PATCH v2 03/10] powerpc/xmon: Add PowerISA v3.1 PMU SPRs Athira Rajeev
2020-07-08 11:04 ` Michael Ellerman
2020-07-09 1:57 ` Athira Rajeev
2020-07-01 9:20 ` [PATCH v2 04/10] powerpc/perf: Add power10_feat to dt_cpu_ftrs Athira Rajeev
2020-07-07 6:22 ` Michael Neuling
2020-07-08 2:13 ` Athira Rajeev
2020-07-08 11:15 ` Michael Ellerman
2020-07-09 11:07 ` Athira Rajeev
2020-07-01 9:20 ` [PATCH v2 05/10] powerpc/perf: Update Power PMU cache_events to u64 type Athira Rajeev
2020-07-01 9:20 ` [PATCH v2 06/10] powerpc/perf: power10 Performance Monitoring support Athira Rajeev
2020-07-02 9:06 ` kernel test robot
2020-07-02 9:06 ` kernel test robot
2020-07-07 6:50 ` Michael Neuling
2020-07-08 10:56 ` Athira Rajeev
2020-07-01 9:20 ` [PATCH v2 07/10] powerpc/perf: support BHRB disable bit and new filtering modes Athira Rajeev
2020-07-07 7:17 ` Michael Neuling
2020-07-08 7:41 ` Athira Rajeev
2020-07-08 7:43 ` Gautham R Shenoy
2020-07-09 2:01 ` Athira Rajeev
2020-07-08 11:42 ` Michael Ellerman
2020-07-09 2:43 ` Athira Rajeev
2020-07-01 9:21 ` [PATCH v2 08/10] powerpc/perf: Add support for outputting extended regs in perf intr_regs Athira Rajeev
2020-07-01 9:21 ` [PATCH v2 09/10] tools/perf: Add perf tools support for extended register capability in powerpc Athira Rajeev
2020-07-08 12:04 ` Michael Ellerman
2020-07-09 3:10 ` Athira Rajeev
2020-07-13 12:47 ` Michael Ellerman
2020-07-13 2:36 ` Athira Rajeev
2020-07-01 9:21 ` [PATCH v2 10/10] powerpc/perf: Add extended regs support for power10 platform Athira Rajeev
2020-07-02 9:40 ` kernel test robot
2020-07-02 9:40 ` kernel test robot
2020-07-08 1:53 ` Athira Rajeev
2020-07-08 1:53 ` Athira Rajeev
2020-07-08 12:04 ` Michael Ellerman
2020-07-09 6:29 ` Athira Rajeev
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