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From: Dave Hansen <dave.hansen@intel.com>
To: Ashish Kalra <Ashish.Kalra@amd.com>,
	tglx@kernel.org, mingo@redhat.com, bp@alien8.de,
	dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
	seanjc@google.com, peterz@infradead.org, thomas.lendacky@amd.com,
	herbert@gondor.apana.org.au, davem@davemloft.net,
	ardb@kernel.org
Cc: pbonzini@redhat.com, aik@amd.com, Michael.Roth@amd.com,
	KPrateek.Nayak@amd.com, Tycho.Andersen@amd.com,
	Nathan.Fontenot@amd.com, ackerleytng@google.com,
	jackyli@google.com, pgonda@google.com, rientjes@google.com,
	jacobhxu@google.com, xin@zytor.com,
	pawan.kumar.gupta@linux.intel.com, babu.moger@amd.com,
	dyoung@redhat.com, nikunj@amd.com, john.allen@amd.com,
	darwi@linutronix.de, linux-kernel@vger.kernel.org,
	linux-crypto@vger.kernel.org, kvm@vger.kernel.org,
	linux-coco@lists.linux.dev
Subject: Re: [PATCH v8 6/7] KVM: SEV: Perform RMP optimizations on SNP guest shutdown
Date: Thu, 18 Jun 2026 14:42:02 -0700	[thread overview]
Message-ID: <fdf0919f-0576-45e3-8600-72ac40c6f8af@intel.com> (raw)
In-Reply-To: <25c3693a59c8f00796e84f1ffa668df6e3b734b5.1781419998.git.ashish.kalra@amd.com>

On 6/15/26 12:50, Ashish Kalra wrote:
> From: Ashish Kalra <ashish.kalra@amd.com>
> 
> Pages are converted from shared to private as SNP guests are launched.
> This destroys exisiting RMPOPT optimizations in the regions where
> pages are converted.
> 
> Conversely, guest pages are converted back to shared during SNP guest
> termination and their region may become eligible for RMPOPT
> optimization.

Oh, actually that would be good text for the *previous* patch too. You
might want to move some of it there.

  reply	other threads:[~2026-06-18 21:42 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1781419998.git.ashish.kalra@amd.com>
2026-06-15 19:48 ` [PATCH v8 1/7] x86/cpufeatures: Add X86_FEATURE_RMPOPT feature flag Ashish Kalra
2026-06-15 19:48 ` [PATCH v8 2/7] x86/sev: Initialize RMPOPT configuration MSRs Ashish Kalra
2026-06-16  6:03   ` K Prateek Nayak
2026-06-18 18:23     ` Kalra, Ashish
2026-06-18 21:08   ` Tom Lendacky
2026-06-15 19:49 ` [PATCH v8 3/7] crypto/ccp: Disable CPU hotplug while SNP is active Ashish Kalra
2026-06-17  4:33   ` K Prateek Nayak
2026-06-17 22:23     ` Kalra, Ashish
2026-06-18 21:49     ` Tom Lendacky
2026-06-18 21:35   ` Dave Hansen
2026-06-15 19:49 ` [PATCH v8 4/7] x86/sev: Add support to perform RMP optimizations asynchronously Ashish Kalra
2026-06-16  7:27   ` K Prateek Nayak
2026-06-16 19:56     ` Kalra, Ashish
2026-06-17  4:20       ` K Prateek Nayak
2026-06-17 21:57         ` Kalra, Ashish
2026-06-15 19:49 ` [PATCH v8 5/7] x86/sev: Add interface to re-enable RMP optimizations Ashish Kalra
2026-06-18 21:41   ` Dave Hansen
2026-06-15 19:50 ` [PATCH v8 6/7] KVM: SEV: Perform RMP optimizations on SNP guest shutdown Ashish Kalra
2026-06-18 21:42   ` Dave Hansen [this message]
2026-06-15 19:50 ` [PATCH v8 7/7] x86/sev: Add debugfs support for RMPOPT Ashish Kalra
2026-06-18 18:08   ` Borislav Petkov
2026-06-18 19:57     ` Kalra, Ashish
2026-06-18 20:10       ` Borislav Petkov
2026-06-18 21:42       ` Dave Hansen

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