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Use from upstream: OvmfPkg/VirtioRngDxe: make VirtioRngGetRNG reentrant safe #2

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Merged
hertrste merged 2 commits into from
Jan 14, 2026
Merged

Use from upstream: OvmfPkg/VirtioRngDxe: make VirtioRngGetRNG reentrant safe #2

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8038873
Revert "OvmfPkg/VirtioRngDxe: make VirtioRngGetRNG reentrant safe"
phip1611 Jan 14, 2026
fe00718
OvmfPkg/VirtioRngDxe: protect VirtioRngGetRNG against timer callbacks
tpressure Jan 13, 2026
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3 changes: 2 additions & 1 deletion OvmfPkg/VirtioRngDxe/VirtioRng.c
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Original file line number Diff line number Diff line change
Expand Up @@ -178,7 +178,7 @@ VirtioRngGetRNG (
goto FreeBuffer;
}

CurrentTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
CurrentTpl = gBS->RaiseTPL (TPL_NOTIFY);

//
// The Virtio RNG device may return less data than we asked it to, and can
Expand All @@ -201,6 +201,7 @@ VirtioRngGetRNG (
EFI_SUCCESS)
{
Status = EFI_DEVICE_ERROR;
gBS->RestoreTPL (CurrentTpl);
goto UnmapBuffer;
}

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