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From: Sean Christopherson <seanjc@google.com>
To: Juergen Gross <jgross@suse.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
	 linux-perf-users@vger.kernel.org, linux-hyperv@vger.kernel.org,
	 kvm@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	 Arnaldo Carvalho de Melo <acme@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	 Mark Rutland <mark.rutland@arm.com>,
	 Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@kernel.org>,  Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	 James Clark <james.clark@linaro.org>,
	Thomas Gleixner <tglx@kernel.org>, Borislav Petkov <bp@alien8.de>,
	 Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	 "K. Y. Srinivasan" <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Wei Liu <wei.liu@kernel.org>,  Dexuan Cui <decui@microsoft.com>,
	Long Li <longli@microsoft.com>,
	 Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v2 13/13] x86/msr: Simplify some rdmsrq() use cases
Date: Wed, 19 Aug 2026 08:28:24 -0700	[thread overview]
Message-ID: <aoXLmJE8ZmQngou8@google.com> (raw)
In-Reply-To: <20260819102314.1499258-14-jgross@suse.com>

On Wed, Aug 19, 2026, Juergen Gross wrote:
> After the conversion of rdmsrq() to an inline function some use cases
> can be simplified by dropping an intermediate variable.

...

>  static inline void update_debugctlmsr(unsigned long debugctlmsr)
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index 2097602a00a0..2a68f937c080 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -2415,10 +2415,7 @@ static inline void kvm_load_ldt(u16 sel)
>  #ifdef CONFIG_X86_64
>  static inline unsigned long read_msr(unsigned long msr)

NAK, please fold in "KVM: x86: Remove the KVM private read_msr() function"[*].
I very deliberately went out of my way to leave read_msr() as-is when moving code
out kvm_host.h, as I was expecting the MSR cleanups to eliminate it entirely.

[*] https://lore.kernel.org/all/20260218082133.400602-5-jgross@suse.com

>  {
> -	u64 value;
> -
> -	value = rdmsrq(msr);
> -	return value;
> +	return rdmsrq(msr);
>  }
>  #endif
>  
> -- 
> 2.55.0
> 

  parent reply	other threads:[~2026-08-19 15:28 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-19 10:23 [PATCH v2 00/13] x86/msr: Drop 32-bit MSR interfaces Juergen Gross
2026-08-19 10:23 ` Juergen Gross
2026-08-19 10:23 ` [PATCH v2 01/13] x86/cpu: Fix coding style violation Juergen Gross
2026-08-19 10:23 ` [PATCH v2 02/13] x86/msr: Remove wrmsr_safe() Juergen Gross
2026-08-19 10:23 ` [PATCH v2 03/13] x86/msr: Remove rdmsr_safe() Juergen Gross
2026-08-19 10:23 ` [PATCH v2 04/13] drivers/ata: Stop using 32-bit MSR interfaces Juergen Gross
2026-08-19 13:40   ` David Laight
2026-08-19 15:27     ` Jürgen Groß
2026-08-19 10:23 ` [PATCH v2 05/13] agp/nvidia: " Juergen Gross
2026-08-19 10:23 ` [PATCH v2 06/13] fbdev/geode: " Juergen Gross
2026-08-19 10:23 ` [PATCH v2 07/13] hw_random/via-rng: " Juergen Gross
2026-08-19 10:23 ` [PATCH v2 08/13] drivers/gpio: " Juergen Gross
2026-08-19 10:23 ` [PATCH v2 09/13] drivers/misc: " Juergen Gross
2026-08-19 10:23 ` [PATCH v2 10/13] x86/msr: Remove wrmsr() Juergen Gross
2026-08-19 10:23 ` [PATCH v2 11/13] x86/msr: Remove rdmsr() Juergen Gross
2026-08-19 10:23 ` [PATCH v2 12/13] treewide: convert rdmsrq() from a macro to an inline function Juergen Gross
2026-08-19 10:23   ` Juergen Gross
2026-08-19 10:44   ` sashiko-bot
2026-08-19 10:23 ` [PATCH v2 13/13] x86/msr: Simplify some rdmsrq() use cases Juergen Gross
2026-08-19 10:41   ` sashiko-bot
2026-08-19 15:28   ` Sean Christopherson [this message]
2026-08-19 15:31     ` Jürgen Groß
2026-08-19 14:40 ` [PATCH v2 00/13] x86/msr: Drop 32-bit MSR interfaces Dave Hansen
2026-08-19 14:40   ` Dave Hansen
2026-08-19 15:21   ` Jürgen Groß
2026-08-19 15:21     ` Jürgen Groß
2026-08-19 15:33   ` Sean Christopherson
2026-08-19 15:33     ` Sean Christopherson

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