Re: linux-next: build failure after merge of the tip tree

Stephen Rothwell
2020-06-22T01:38:31Z

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Hi Borislav,

On Sun, 21 Jun 2020 12:53:50 +0200 Borislav Petkov <bp@alien8.de> wrote:
>
> + acme for an FYI.
>
> On Sun, Jun 21, 2020 at 04:33:23PM +1000, Stephen Rothwell wrote:
> > Hi all,
> >
> > After merging the tip tree, today's linux-next build (perf) failed
> > like this:
> >
> > In file included from trace/beauty/tracepoints/x86_msr.c:10:
> > perf/trace/beauty/generated/x86_arch_MSRs_array.c:292:45: error: initialized field overwritten [-Werror=override-init]
> > 292 | [0xc0010280 - x86_AMD_V_KVM_MSRs_offset] = "F15H_PTSC",
> > | ^~~~~~~~~~~
> > perf/trace/beauty/generated/x86_arch_MSRs_array.c:292:45: note: (near initialization for 'x86_AMD_V_KVM_MSRs[640]')
> >
> > Caused by commit
> >
> > 1068ed4547ad ("x86/msr: Lift AMD family 0x15 power-specific MSRs")
> >
> > I have used the tip tree from next-20200618 for tooday.
>
> Thanks, I saw that once but then got distracted to something of higher
> prio. :-\
>
> I'll apply this after testing it a bit:
>
> ---
> From: Borislav Petkov <bp@suse.de>
> Date: Sun, 21 Jun 2020 12:41:53 +0200
> Subject: [PATCH] x86/msr: Move the F15h MSRs where they belong
>
> 1068ed4547ad ("x86/msr: Lift AMD family 0x15 power-specific MSRs")
>
> moved the three F15h power MSRs to the architectural list but that was
> wrong as they belong in the family 0x15 list. That also caused:
>
> In file included from trace/beauty/tracepoints/x86_msr.c:10:
> perf/trace/beauty/generated/x86_arch_MSRs_array.c:292:45: error: initialized field overwritten [-Werror=override-init]
> 292 | [0xc0010280 - x86_AMD_V_KVM_MSRs_offset] = "F15H_PTSC",
> | ^~~~~~~~~~~
> perf/trace/beauty/generated/x86_arch_MSRs_array.c:292:45: note: (near initialization for 'x86_AMD_V_KVM_MSRs[640]')
>
> due to MSR_F15H_PTSC ending up being defined twice. Move them where they
> belong and drop the duplicate.
>
> While at it, update the msr-index.h copy to pick up the changes from
>
> 7e5b3c267d25 ("x86/speculation: Add Special Register Buffer Data Sampling (SRBDS) mitigation")
>
> Fixes: 1068ed4547ad ("x86/msr: Lift AMD family 0x15 power-specific MSRs")
> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
> Signed-off-by: Borislav Petkov <bp@suse.de>
> ---
> arch/x86/include/asm/msr-index.h | 5 ++---
> tools/arch/x86/include/asm/msr-index.h | 9 ++++++---
> 2 files changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
> index eb9537254920..63ed8fe35738 100644
> --- a/arch/x86/include/asm/msr-index.h
> +++ b/arch/x86/include/asm/msr-index.h
> @@ -422,11 +422,8 @@
> #define MSR_AMD_PERF_CTL 0xc0010062
> #define MSR_AMD_PERF_STATUS 0xc0010063
> #define MSR_AMD_PSTATE_DEF_BASE 0xc0010064
> -#define MSR_F15H_CU_PWR_ACCUMULATOR 0xc001007a
> -#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b
> #define MSR_AMD64_OSVW_ID_LENGTH 0xc0010140
> #define MSR_AMD64_OSVW_STATUS 0xc0010141
> -#define MSR_F15H_PTSC 0xc0010280
> #define MSR_AMD_PPIN_CTL 0xc00102f0
> #define MSR_AMD_PPIN 0xc00102f1
> #define MSR_AMD64_CPUID_FN_1 0xc0011004
> @@ -469,6 +466,8 @@
> #define MSR_F16H_DR0_ADDR_MASK 0xc0011027
>
> /* Fam 15h MSRs */
> +#define MSR_F15H_CU_PWR_ACCUMULATOR 0xc001007a
> +#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b
> #define MSR_F15H_PERF_CTL 0xc0010200
> #define MSR_F15H_PERF_CTL0 MSR_F15H_PERF_CTL
> #define MSR_F15H_PERF_CTL1 (MSR_F15H_PERF_CTL + 2)
> diff --git a/tools/arch/x86/include/asm/msr-index.h b/tools/arch/x86/include/asm/msr-index.h
> index 7dfd45bb6cdb..63ed8fe35738 100644
> --- a/tools/arch/x86/include/asm/msr-index.h
> +++ b/tools/arch/x86/include/asm/msr-index.h
> @@ -128,6 +128,10 @@
> #define TSX_CTRL_RTM_DISABLE BIT(0) /* Disable RTM feature */
> #define TSX_CTRL_CPUID_CLEAR BIT(1) /* Disable TSX enumeration */
>
> +/* SRBDS support */
> +#define MSR_IA32_MCU_OPT_CTRL 0x00000123
> +#define RNGDS_MITG_DIS BIT(0)
> +
> #define MSR_IA32_SYSENTER_CS 0x00000174
> #define MSR_IA32_SYSENTER_ESP 0x00000175
> #define MSR_IA32_SYSENTER_EIP 0x00000176
> @@ -418,11 +422,8 @@
> #define MSR_AMD_PERF_CTL 0xc0010062
> #define MSR_AMD_PERF_STATUS 0xc0010063
> #define MSR_AMD_PSTATE_DEF_BASE 0xc0010064
> -#define MSR_F15H_CU_PWR_ACCUMULATOR 0xc001007a
> -#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b
> #define MSR_AMD64_OSVW_ID_LENGTH 0xc0010140
> #define MSR_AMD64_OSVW_STATUS 0xc0010141
> -#define MSR_F15H_PTSC 0xc0010280
> #define MSR_AMD_PPIN_CTL 0xc00102f0
> #define MSR_AMD_PPIN 0xc00102f1
> #define MSR_AMD64_CPUID_FN_1 0xc0011004
> @@ -465,6 +466,8 @@
> #define MSR_F16H_DR0_ADDR_MASK 0xc0011027
>
> /* Fam 15h MSRs */
> +#define MSR_F15H_CU_PWR_ACCUMULATOR 0xc001007a
> +#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b
> #define MSR_F15H_PERF_CTL 0xc0010200
> #define MSR_F15H_PERF_CTL0 MSR_F15H_PERF_CTL
> #define MSR_F15H_PERF_CTL1 (MSR_F15H_PERF_CTL + 2)

I applied that patch to the tip tree merge today.

Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> # build tested

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Cheers,
Stephen Rothwell

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