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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>, <lpieralisi@kernel.org>
Subject: [PATCH v2 16/19] i386/sev: Allow in-place conversion for SEV-SNP guests
Date: Tue, 8 Sep 2026 15:48:36 -0500	[thread overview]
Message-ID: <20260908205236.838281-17-michael.roth@amd.com> (raw)
In-Reply-To: <20260908205236.838281-1-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 87d88b7920..dc9934d5f3 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -3313,6 +3313,7 @@ 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:[~2026-09-08 20:56 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-08 20:48 [PATCH v2 00/19] guest_memfd: support in-place memory conversion Michael Roth
2026-09-08 20:48 ` [PATCH v2 01/19] accel/kvm: Add helper for handling conversions of MMIO holes Michael Roth
2026-09-08 20:48 ` [PATCH v2 02/19] accel/kvm: Fix kvm_convert_memory() calls crossing memory regions Michael Roth
2026-09-08 20:48 ` [PATCH v2 03/19] accel/kvm: Fix handling of MMIO holes at start of conversion ranges Michael Roth
2026-09-08 20:48 ` [PATCH v2 04/19] accel/kvm: Fix handling of conversion ranges with multiple MMIO holes Michael Roth
2026-09-08 20:48 ` [PATCH v2 05/19] accel/kvm: Use dedicated helper for creating private-only gmem instances Michael Roth
2026-09-08 20:48 ` [PATCH v2 06/19] linux-headers: Update headers for v12 of in-place conversion kernel support Michael Roth
2026-09-08 20:48 ` [PATCH v2 07/19] accel/kvm: Add CGS option to control in-place conversion support Michael Roth
2026-09-09  6:20   ` Markus Armbruster
2026-09-08 20:48 ` [PATCH v2 08/19] system/memory: Re-use memory-backend-guest-memfd inode for private memory Michael Roth
2026-09-10  8:39   ` David Hildenbrand
2026-09-08 20:48 ` [PATCH v2 09/19] accel/kvm: Handle guest_memfd flags internally when creating instances Michael Roth
2026-09-08 20:48 ` [PATCH v2 10/19] system/memory: Default to guest_memfd for RAM for in-place conversion Michael Roth
2026-09-08 20:48 ` [PATCH v2 11/19] accel/kvm: Move post-conversion updates to a separate helper Michael Roth
2026-09-08 20:48 ` [PATCH v2 12/19] accel/kvm: Re-order attribute notifications for in-place conversion Michael Roth
2026-09-08 20:48 ` [PATCH v2 13/19] accel/kvm: Support shared/private conversions via guest_memfd ioctls Michael Roth
2026-09-08 20:48 ` [PATCH v2 14/19] accel/kvm: Don't default to private attributes for in-place conversion Michael Roth
2026-09-08 20:48 ` [PATCH v2 15/19] i386/sev: Update SNP_LAUNCH_UPDATE " Michael Roth
2026-09-08 20:48 ` Michael Roth [this message]
2026-09-08 20:48 ` [PATCH v2 17/19] i386/sev: Update CPUID failure handling " Michael Roth
2026-09-08 20:48 ` [PATCH v2 18/19] accel/kvm: Disable discard " Michael Roth
2026-09-08 22:16   ` Michael Roth
2026-09-08 20:48 ` [PATCH v2 19/19] hostmem: Automatically select set guest-memfd=on " Michael Roth
2026-09-09  6:30   ` Markus Armbruster

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