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From: Michael Roth <michael.roth@amd.com>
To: <qemu-devel@nongnu.org>
Cc: <kvm@vger.kernel.org>, <pbonzini@redhat.com>,
	<berrange@redhat.com>, <armbru@redhat.com>,
	<pankaj.gupta@amd.com>, <isaku.yamahata@intel.com>,
	<xiaoyao.li@intel.com>, <chao.p.peng@linux.intel.com>,
	<david@kernel.org>, <ashish.kalra@amd.com>,
	<ackerleytng@google.com>
Subject: [PATCH RFC 12/12] i386/sev: Allow in-place conversion for SEV-SNP guests
Date: Wed, 27 May 2026 19:03:37 -0500	[thread overview]
Message-ID: <20260528000416.8161-13-michael.roth@amd.com> (raw)
In-Reply-To: <20260528000416.8161-1-michael.roth@amd.com>

All the necessary changes are now in place for an SNP guest to be able
to leverage in-place conversion support. Allow it to be switched on by
users. KVM-specific checks will still gate whether or not the option is
ultimately allowed, this just allows the option to be set via
command-line.

Signed-off-by: Michael Roth <michael.roth@amd.com>
---
 target/i386/sev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/i386/sev.c b/target/i386/sev.c
index 32a5e605bf..a56367aa5e 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -3198,6 +3198,7 @@ sev_snp_guest_instance_init(Object *obj)
     SevSnpGuestState *sev_snp_guest = SEV_SNP_GUEST(obj);
 
     cgs->require_guest_memfd = true;
+    cgs->allow_convert_in_place = true;
 
     /* default init/start/finish params for kvm */
     sev_snp_guest->kvm_start_conf.policy = DEFAULT_SEV_SNP_POLICY;
-- 
2.43.0


  parent reply	other threads:[~2026-05-28  0:06 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-28  0:03 [PATCH RFC 00/12] guest_memfd: support in-place memory conversion Michael Roth
2026-05-28  0:03 ` [PATCH RFC 01/12] accel/kvm: Decouple guest_memfd checks from memory attribute checks Michael Roth
2026-05-28  0:03 ` [PATCH RFC 02/12] hostmem: Introduce dedicated memory backend for guest_memfd Michael Roth
2026-06-02  8:22   ` Markus Armbruster
2026-06-03  6:19     ` Michael Roth
2026-06-08  8:20       ` Markus Armbruster
2026-06-08 20:42         ` Michael Roth
2026-05-28  0:03 ` [PATCH RFC 04/12] accel/kvm: Add CGS option to control in-place conversion support Michael Roth
2026-06-02  8:23   ` Markus Armbruster
2026-06-03  6:39     ` Michael Roth
2026-06-08  8:15       ` Markus Armbruster
2026-06-08 20:21         ` Michael Roth
2026-05-28  0:03 ` [PATCH RFC 05/12] system/memory: Re-use memory-backend-guest-memfd inode for private memory Michael Roth
2026-05-28  0:03 ` [PATCH RFC 06/12] system/memory: Default to guest_memfd for RAM for in-place conversion Michael Roth
2026-05-28  0:03 ` [PATCH RFC 07/12] accel/kvm: Move post-conversion updates to a separate helper Michael Roth
2026-05-28  0:03 ` [PATCH RFC 08/12] accel/kvm: Re-order attribute notifications for in-place conversion Michael Roth
2026-05-28  0:03 ` [PATCH RFC 09/12] accel/kvm: Support shared/private conversions via guest_memfd ioctls Michael Roth
2026-06-04 13:19   ` Gupta, Pankaj
2026-06-04 23:36     ` Michael Roth
2026-05-28  0:03 ` [PATCH RFC 10/12] accel/kvm: Don't default to private attributes for in-place conversion Michael Roth
2026-05-28  0:03 ` [PATCH RFC 11/12] i386/sev: Update SNP_LAUNCH_UPDATE " Michael Roth
2026-05-28  0:03 ` Michael Roth [this message]
2026-05-28  5:44 ` [PATCH RFC 00/12] guest_memfd: support in-place memory conversion Xiaoyao Li
2026-06-02 22:20   ` Michael Roth

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