linux-kernel - Re: [PATCH v7 0/7] Add SEV-SNP CipherTextHiding feature support

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Message-ID: <aL85tQ2mm6d2PqSx@google.com>
Date: Mon, 8 Sep 2025 13:16:53 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Herbert Xu <herbert@...dor.apana.org.au>
Cc: Ashish Kalra <Ashish.Kalra@....com>, corbet@....net, pbonzini@...hat.com, 
	tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, 
	dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com, 
	thomas.lendacky@....com, john.allen@....com, davem@...emloft.net, 
	akpm@...ux-foundation.org, rostedt@...dmis.org, paulmck@...nel.org, 
	nikunj@....com, Neeraj.Upadhyay@....com, aik@....com, ardb@...nel.org, 
	michael.roth@....com, arnd@...db.de, linux-doc@...r.kernel.org, 
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org, 
	kvm@...r.kernel.org
Subject: Re: [PATCH v7 0/7] Add SEV-SNP CipherTextHiding feature support

On Sat, Aug 16, 2025, Herbert Xu wrote:
> On Mon, Jul 21, 2025 at 02:12:15PM +0000, Ashish Kalra wrote:
> > Ashish Kalra (7):
> >   crypto: ccp - New bit-field definitions for SNP_PLATFORM_STATUS
> >     command
> >   crypto: ccp - Cache SEV platform status and platform state
> >   crypto: ccp - Add support for SNP_FEATURE_INFO command
> >   crypto: ccp - Introduce new API interface to indicate SEV-SNP
> >     Ciphertext hiding feature
> >   crypto: ccp - Add support to enable CipherTextHiding on SNP_INIT_EX
> >   KVM: SEV: Introduce new min,max sev_es and sev_snp asid variables
> >   KVM: SEV: Add SEV-SNP CipherTextHiding support
> > 
> >  .../admin-guide/kernel-parameters.txt         |  18 +++
> >  arch/x86/kvm/svm/sev.c                        |  96 +++++++++++--
> >  drivers/crypto/ccp/sev-dev.c                  | 127 ++++++++++++++++--
> >  drivers/crypto/ccp/sev-dev.h                  |   6 +-
> >  include/linux/psp-sev.h                       |  44 +++++-
> >  include/uapi/linux/psp-sev.h                  |  10 +-
> >  6 files changed, 274 insertions(+), 27 deletions(-)
> > 
> > -- 
> > 2.34.1
> 
> Patches 1-5 applied.  Thanks.

Can you provide a tag for commit c9760b0fca6b ("crypto: ccp - Add support to
enable CipherTextHiding on SNP_INIT_EX")?  I'd like to apply the KVM side of
things for 6.17, and would prefer not to merge or base the KVM patches on a bare
commit.

Thanks!