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64 lines
2.0 KiB
64 lines
2.0 KiB
2 days ago
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From 481310a21104aba17bc0cddd236ecdf69d4ba662 Mon Sep 17 00:00:00 2001
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From: Oliver Steffen <osteffen@redhat.com>
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Date: Mon, 26 Aug 2024 19:25:52 +0200
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Subject: [PATCH] AmdSevDxe: Fix the shim fallback reboot workaround for SNP
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RH-Author: Oliver Steffen <osteffen@redhat.com>
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RH-MergeRequest: 68: AmdSevDxe: Fix the shim fallback reboot workaround for SNP
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RH-Jira: RHEL-56081
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RH-Acked-by: Gerd Hoffmann <None>
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RH-Commit: [1/1] ab8678b61d171f9c19459e034483437b29037b4b (osteffen/edk2)
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The shim fallback reboot workaround (introduced for SEV-ES) does
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not always work for SEV-SNP, due to a conditional early return.
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Let's just register the workaround earlier in this function to
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fix that.
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Signed-off-by: Oliver Steffen <osteffen@redhat.com>
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---
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OvmfPkg/AmdSevDxe/AmdSevDxe.c | 21 +++++++++++----------
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1 file changed, 11 insertions(+), 10 deletions(-)
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diff --git a/OvmfPkg/AmdSevDxe/AmdSevDxe.c b/OvmfPkg/AmdSevDxe/AmdSevDxe.c
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index 0eb88e50ff..ca345e95da 100644
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--- a/OvmfPkg/AmdSevDxe/AmdSevDxe.c
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+++ b/OvmfPkg/AmdSevDxe/AmdSevDxe.c
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@@ -243,6 +243,17 @@ AmdSevDxeEntryPoint (
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return EFI_UNSUPPORTED;
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}
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+ // Shim fallback reboot workaround
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+ Status = gBS->CreateEventEx (
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+ EVT_NOTIFY_SIGNAL,
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+ TPL_CALLBACK,
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+ PopulateVarstore,
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+ SystemTable,
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+ &gEfiEndOfDxeEventGroupGuid,
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+ &PopulateVarstoreEvent
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+ );
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+ ASSERT_EFI_ERROR (Status);
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+
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//
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// Iterate through the GCD map and clear the C-bit from MMIO and NonExistent
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// memory space. The NonExistent memory space will be used for mapping the
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@@ -393,15 +404,5 @@ AmdSevDxeEntryPoint (
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);
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}
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- Status = gBS->CreateEventEx (
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- EVT_NOTIFY_SIGNAL,
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- TPL_CALLBACK,
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- PopulateVarstore,
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- SystemTable,
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- &gEfiEndOfDxeEventGroupGuid,
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- &PopulateVarstoreEvent
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- );
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- ASSERT_EFI_ERROR (Status);
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-
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return EFI_SUCCESS;
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}
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--
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2.39.3
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