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Sender: Ingo Molnar <mingo.kernel.org@gmail.com>
Date: Tue, 9 Apr 2024 09:45:37 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Li RongQing <lirongqing@baidu.com>
Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
	dave.hansen@linux.intel.com, x86@kernel.org, peterz@infradead.org,
	linux-kernel@vger.kernel.org, pbonzini@redhat.com,
	kvm@vger.kernel.org, seanjc@google.com, szy0127@sjtu.edu.cn,
	thomas.lendacky@amd.com
Subject: Re: [PATCH][RFC] x86,lib: Add wbinvd_on_many_cpus helpers
Message-ID: <ZhTyIadG35HDPNRx@gmail.com>
References: <20240409042056.51757-1-lirongqing@baidu.com>
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* Li RongQing <lirongqing@baidu.com> wrote:

> wbinvd_on_many_cpus will call smp_call_function_many(), which should
> be more efficient that iterating cpus since it would run wbinvd()
> concurrently locally and remotely
> 
> it can be used by the below patch
> https://patchwork.kernel.org/project/kvm/patch/1860502863.219296.1710395908135.JavaMail.zimbra@sjtu.edu.cn/
> 
> Cc: Zheyun Shen <szy0127@sjtu.edu.cn>
> Cc: Tom Lendacky <thomas.lendacky@amd.com>
> Signed-off-by: Li RongQing <lirongqing@baidu.com>
> ---
>  arch/x86/include/asm/smp.h | 7 +++++++
>  arch/x86/lib/cache-smp.c   | 7 +++++++
>  2 files changed, 14 insertions(+)

The two patches should be submitted together within the same series.

Thanks,

	Ingo