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| author | Fabiano Rosas <farosas@linux.ibm.com> | 2022-05-25 10:05:51 -0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-06-29 19:21:21 +1000 |
| commit | 3f8ed993be3cf154a91d9ab5e80470c6c755adbe (patch) | |
| tree | e6f66b37e2ca8e8dc730be0ae3e08cbe342b43ac /arch/powerpc/kvm | |
| parent | 9981bace85d816ed8724ac46e49285e8488d29e6 (diff) | |
| download | linux-stable-3f8ed993be3cf154a91d9ab5e80470c6c755adbe.tar.gz linux-stable-3f8ed993be3cf154a91d9ab5e80470c6c755adbe.tar.bz2 linux-stable-3f8ed993be3cf154a91d9ab5e80470c6c755adbe.zip | |
KVM: PPC: Book3S HV: Add a new config for P8 debug timing
Turn the existing Kconfig KVM_BOOK3S_HV_EXIT_TIMING into
KVM_BOOK3S_HV_P8_TIMING in preparation for the addition of a new
config for P9 timings.
This applies only to P8 code, the generic timing code is still kept
under KVM_BOOK3S_HV_EXIT_TIMING.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220525130554.2614394-3-farosas@linux.ibm.com
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/Kconfig | 6 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 24 |
2 files changed, 17 insertions, 13 deletions
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index ddd88179110a..73f8277df7d1 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -128,7 +128,11 @@ config KVM_BOOK3S_64_PR and system calls on the host. config KVM_BOOK3S_HV_EXIT_TIMING - bool "Detailed timing for hypervisor real-mode code" + bool + +config KVM_BOOK3S_HV_P8_TIMING + bool "Detailed timing for hypervisor real-mode code (for POWER8)" + select KVM_BOOK3S_HV_EXIT_TIMING depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS help Calculate time taken for each vcpu in the real-mode guest entry, diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 0fc0e68d20d0..7ded202bf995 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -237,14 +237,14 @@ kvm_novcpu_wakeup: cmpdi r4, 0 beq kvmppc_primary_no_guest -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMENTRY bl kvmhv_start_timing #endif b kvmppc_got_guest kvm_novcpu_exit: -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING ld r4, HSTATE_KVM_VCPU(r13) cmpdi r4, 0 beq 13f @@ -523,7 +523,7 @@ kvmppc_hv_entry: li r6, KVM_GUEST_MODE_HOST_HV stb r6, HSTATE_IN_GUEST(r13) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* Store initial timestamp */ cmpdi r4, 0 beq 1f @@ -894,7 +894,7 @@ fast_guest_return: li r9, KVM_GUEST_MODE_GUEST_HV stb r9, HSTATE_IN_GUEST(r13) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* Accumulate timing */ addi r3, r4, VCPU_TB_GUEST bl kvmhv_accumulate_time @@ -945,7 +945,7 @@ secondary_too_late: cmpdi r4, 0 beq 11f stw r12, VCPU_TRAP(r4) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMEXIT bl kvmhv_accumulate_time #endif @@ -959,7 +959,7 @@ hdec_soon: li r12, BOOK3S_INTERRUPT_HV_DECREMENTER 12: stw r12, VCPU_TRAP(r4) mr r9, r4 -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMEXIT bl kvmhv_accumulate_time #endif @@ -1056,7 +1056,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) li r0, MSR_RI mtmsrd r0, 1 -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r9, VCPU_TB_RMINTR mr r4, r9 bl kvmhv_accumulate_time @@ -1135,7 +1135,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) guest_exit_cont: /* r9 = vcpu, r12 = trap, r13 = paca */ -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r9, VCPU_TB_RMEXIT mr r4, r9 bl kvmhv_accumulate_time @@ -1495,7 +1495,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) mtspr SPRN_LPCR,r8 isync -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* Finish timing, if we have a vcpu */ ld r4, HSTATE_KVM_VCPU(r13) cmpdi r4, 0 @@ -2153,7 +2153,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_TM) ld r4, HSTATE_KVM_VCPU(r13) std r3, VCPU_DEC_EXPIRES(r4) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING ld r4, HSTATE_KVM_VCPU(r13) addi r3, r4, VCPU_TB_CEDE bl kvmhv_accumulate_time @@ -2221,7 +2221,7 @@ kvm_end_cede: /* get vcpu pointer */ ld r4, HSTATE_KVM_VCPU(r13) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMINTR bl kvmhv_accumulate_time #endif @@ -2961,7 +2961,7 @@ kvmppc_fix_pmao: isync blr -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* * Start timing an activity * r3 = pointer to time accumulation struct, r4 = vcpu |