On 1/22/24 00:47, Sheng Wei via groups.io wrote:
PciIoMap () need to feedback the status of
mIoMmuProtocol->SetAttribute () return value.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4652
I'm still investigating, but this commit breaks booting all types of SEV
guests. Without this patch, there is a boot device mapping and the Grub
menu is displayed. But with this patch, I receive:
map: No mapping found.
Press ESC in 1 seconds to skip startup.nsh or any other key to continue.
and then drop to the shell prompt.
Thanks,
Tom
Cc: Ray Ni <ray...@intel.com>
Cc: Huang Jenny <jenny.hu...@intel.com>
Cc: Chiang Chris <chris.chi...@intel.com>
Signed-off-by: Sheng Wei <w.sh...@intel.com>
---
MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
index 14bed54729..e85544d08d 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
@@ -1024,12 +1024,12 @@ PciIoMap (
return EFI_INVALID_PARAMETER;
}
- mIoMmuProtocol->SetAttribute (
- mIoMmuProtocol,
- PciIoDevice->Handle,
- *Mapping,
- IoMmuAttribute
- );
+ Status = mIoMmuProtocol->SetAttribute (
+ mIoMmuProtocol,
+ PciIoDevice->Handle,
+ *Mapping,
+ IoMmuAttribute
+ );
}
}
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