linux-kernel - Re: [PATCH 1/1] tools headers UAPI: Sync linux/kvm.h with the kernel sources

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Date:   Tue, 3 May 2022 11:16:10 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] tools headers UAPI: Sync linux/kvm.h with the kernel
 sources

Em Tue, May 03, 2022 at 11:15:32AM -0300, Arnaldo Carvalho de Melo escreveu:
> To pick the changes in:
> 
>   d495f942f40aa412 ("KVM: fix bad user ABI for KVM_EXIT_SYSTEM_EVENT")

Ah, this is just FYI, I'm carrying it in the perf tools tree already.

- Arnaldo
 
> That just rebuilds perf, as these patches don't add any new KVM ioctl to
> be harvested for the the 'perf trace' ioctl syscall argument
> beautifiers.
> 
> This is also by now used by tools/testing/selftests/kvm/, a simple test
> build succeeded.
> 
> This silences this perf build warning:
> 
>   Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
>   diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h
> 
> Cc: Adrian Hunter <adrian.hunter@...el.com>
> Cc: Jiri Olsa <jolsa@...nel.org>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Link: http://lore.kernel.org/lkml/
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> ---
>  tools/include/uapi/linux/kvm.h | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h
> index 91a6fe4e02c08c4b..6a184d260c7f2e17 100644
> --- a/tools/include/uapi/linux/kvm.h
> +++ b/tools/include/uapi/linux/kvm.h
> @@ -445,7 +445,13 @@ struct kvm_run {
>  #define KVM_SYSTEM_EVENT_RESET          2
>  #define KVM_SYSTEM_EVENT_CRASH          3
>  			__u32 type;
> -			__u64 flags;
> +			__u32 ndata;
> +			union {
> +#ifndef __KERNEL__
> +				__u64 flags;
> +#endif
> +				__u64 data[16];
> +			};
>  		} system_event;
>  		/* KVM_EXIT_S390_STSI */
>  		struct {
> @@ -1144,6 +1150,8 @@ struct kvm_ppc_resize_hpt {
>  #define KVM_CAP_S390_MEM_OP_EXTENSION 211
>  #define KVM_CAP_PMU_CAPABILITY 212
>  #define KVM_CAP_DISABLE_QUIRKS2 213
> +/* #define KVM_CAP_VM_TSC_CONTROL 214 */
> +#define KVM_CAP_SYSTEM_EVENT_DATA 215
>  
>  #ifdef KVM_CAP_IRQ_ROUTING
>  
> -- 
> 2.35.1
> 

-- 

- Arnaldo