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SubjectRe: [RFC][PATCH 1/2] x86: remove duplicate TSC DEADLINE MSR definitions
On Thu, Mar 05, 2020 at 09:47:06AM -0800, Dave Hansen wrote:
>
> There are two definitions for the TSC deadline MSR in msr-index.h,
> one with an underscore and one without. Axe one of them and move
> all the references over to the other one.
>
> Cc: x86@kernel.org
> Cc: Peter Zijlstra <peterz@infradead.org>
>
> ---
>
> b/arch/x86/include/asm/msr-index.h | 2 --
> b/arch/x86/kvm/x86.c | 6 +++---
> b/tools/arch/x86/include/asm/msr-index.h | 2 --
> b/tools/perf/trace/beauty/tracepoints/x86_msr.sh | 2 +-
> b/tools/testing/selftests/kvm/include/x86_64/processor.h | 2 --

acme, ACK to take the perf bits through tip?

Leaving in the rest.

> 5 files changed, 4 insertions(+), 10 deletions(-)
>
> diff -puN arch/x86/include/asm/msr-index.h~kill-dup-MSR_IA32_TSCDEADLINE arch/x86/include/asm/msr-index.h
> --- a/arch/x86/include/asm/msr-index.h~kill-dup-MSR_IA32_TSCDEADLINE 2020-03-05 09:42:37.049901042 -0800
> +++ b/arch/x86/include/asm/msr-index.h 2020-03-05 09:42:37.062901042 -0800
> @@ -576,8 +576,6 @@
> #define MSR_IA32_APICBASE_ENABLE (1<<11)
> #define MSR_IA32_APICBASE_BASE (0xfffff<<12)
>
> -#define MSR_IA32_TSCDEADLINE 0x000006e0
> -
> #define MSR_IA32_UCODE_WRITE 0x00000079
> #define MSR_IA32_UCODE_REV 0x0000008b
>
> diff -puN arch/x86/kvm/x86.c~kill-dup-MSR_IA32_TSCDEADLINE arch/x86/kvm/x86.c
> --- a/arch/x86/kvm/x86.c~kill-dup-MSR_IA32_TSCDEADLINE 2020-03-05 09:42:37.051901042 -0800
> +++ b/arch/x86/kvm/x86.c 2020-03-05 09:42:37.065901042 -0800
> @@ -1200,7 +1200,7 @@ static const u32 emulated_msrs_all[] = {
> MSR_KVM_PV_EOI_EN,
>
> MSR_IA32_TSC_ADJUST,
> - MSR_IA32_TSCDEADLINE,
> + MSR_IA32_TSC_DEADLINE,
> MSR_IA32_ARCH_CAPABILITIES,
> MSR_IA32_MISC_ENABLE,
> MSR_IA32_MCG_STATUS,
> @@ -2688,7 +2688,7 @@ int kvm_set_msr_common(struct kvm_vcpu *
> return kvm_set_apic_base(vcpu, msr_info);
> case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff:
> return kvm_x2apic_msr_write(vcpu, msr, data);
> - case MSR_IA32_TSCDEADLINE:
> + case MSR_IA32_TSC_DEADLINE:
> kvm_set_lapic_tscdeadline_msr(vcpu, data);
> break;
> case MSR_IA32_TSC_ADJUST:
> @@ -3009,7 +3009,7 @@ int kvm_get_msr_common(struct kvm_vcpu *
> case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff:
> return kvm_x2apic_msr_read(vcpu, msr_info->index, &msr_info->data);
> break;
> - case MSR_IA32_TSCDEADLINE:
> + case MSR_IA32_TSC_DEADLINE:
> msr_info->data = kvm_get_lapic_tscdeadline_msr(vcpu);
> break;
> case MSR_IA32_TSC_ADJUST:
> diff -puN tools/arch/x86/include/asm/msr-index.h~kill-dup-MSR_IA32_TSCDEADLINE tools/arch/x86/include/asm/msr-index.h
> --- a/tools/arch/x86/include/asm/msr-index.h~kill-dup-MSR_IA32_TSCDEADLINE 2020-03-05 09:42:37.055901042 -0800
> +++ b/tools/arch/x86/include/asm/msr-index.h 2020-03-05 09:42:37.066901042 -0800
> @@ -576,8 +576,6 @@
> #define MSR_IA32_APICBASE_ENABLE (1<<11)
> #define MSR_IA32_APICBASE_BASE (0xfffff<<12)
>
> -#define MSR_IA32_TSCDEADLINE 0x000006e0
> -
> #define MSR_IA32_UCODE_WRITE 0x00000079
> #define MSR_IA32_UCODE_REV 0x0000008b
>
> diff -puN tools/perf/trace/beauty/tracepoints/x86_msr.sh~kill-dup-MSR_IA32_TSCDEADLINE tools/perf/trace/beauty/tracepoints/x86_msr.sh
> --- a/tools/perf/trace/beauty/tracepoints/x86_msr.sh~kill-dup-MSR_IA32_TSCDEADLINE 2020-03-05 09:42:37.057901042 -0800
> +++ b/tools/perf/trace/beauty/tracepoints/x86_msr.sh 2020-03-05 09:42:37.066901042 -0800
> @@ -15,7 +15,7 @@ x86_msr_index=${arch_x86_header_dir}/msr
>
> printf "static const char *x86_MSRs[] = {\n"
> regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MSR_([[:alnum:]][[:alnum:]_]+)[[:space:]]+(0x00000[[:xdigit:]]+)[[:space:]]*.*'
> -egrep $regex ${x86_msr_index} | egrep -v 'MSR_(ATOM|P[46]|AMD64|IA32_TSCDEADLINE|IDT_FCR4)' | \
> +egrep $regex ${x86_msr_index} | egrep -v 'MSR_(ATOM|P[46]|AMD64|IA32_TSC_DEADLINE|IDT_FCR4)' | \
> sed -r "s/$regex/\2 \1/g" | sort -n | \
> xargs printf "\t[%s] = \"%s\",\n"
> printf "};\n\n"
> diff -puN tools/testing/selftests/kvm/include/x86_64/processor.h~kill-dup-MSR_IA32_TSCDEADLINE tools/testing/selftests/kvm/include/x86_64/processor.h
> --- a/tools/testing/selftests/kvm/include/x86_64/processor.h~kill-dup-MSR_IA32_TSCDEADLINE 2020-03-05 09:42:37.058901042 -0800
> +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h 2020-03-05 09:42:37.067901042 -0800
> @@ -813,8 +813,6 @@ void kvm_get_cpu_address_width(unsigned
> #define APIC_VECTOR_MASK 0x000FF
> #define APIC_ICR2 0x310
>
> -#define MSR_IA32_TSCDEADLINE 0x000006e0
> -
> #define MSR_IA32_UCODE_WRITE 0x00000079
> #define MSR_IA32_UCODE_REV 0x0000008b
>
> _

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette

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