Switching from the ArmPlatformPkg/NorFlashDxe driver to the
OvmfPkg/VirtNorFlashDxe driver had the side effect that flash address
space got registered as EFI_MEMORY_WC instead of EFI_MEMORY_UC.
That confuses the linux kernel's numa code, seems this makes kernel
consider the flash being node memory. "lsmem" changes from ...
RANGE SIZE STATE REMOVABLE BLOCK
0x0000000040000000-0x000000013fffffff 4G online yes 8-39
... to ...
RANGE SIZE STATE REMOVABLE BLOCK
0x0000000000000000-0x0000000007ffffff 128M online yes 0
0x0000000040000000-0x000000013fffffff 4G online yes 8-39
... and in the kernel log got new error lines:
NUMA: Warning: invalid memblk node 512 [mem
0x0000000004000000-0x0000000007ffffff]
NUMA: Faking a node at [mem 0x0000000004000000-0x000000013fffffff]
Changing the attributes back to EFI_MEMORY_UC fixes this.
Fixes: b92298af8218 ("ArmVirtPkg/ArmVirtQemu: migrate to OVMF's
VirtNorFlashDxe")
Signed-off-by: Gerd Hoffmann <[email protected]>
---
OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c
b/OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c
index ff3121af2a40..f9a41f6aab0f 100644
--- a/OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c
+++ b/OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c
@@ -394,14 +394,14 @@ NorFlashFvbInitialize (
EfiGcdMemoryTypeMemoryMappedIo,
Instance->DeviceBaseAddress,
RuntimeMmioRegionSize,
- EFI_MEMORY_WC | EFI_MEMORY_RUNTIME
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
);
ASSERT_EFI_ERROR (Status);
Status = gDS->SetMemorySpaceAttributes (
Instance->DeviceBaseAddress,
RuntimeMmioRegionSize,
- EFI_MEMORY_WC | EFI_MEMORY_RUNTIME
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
);
ASSERT_EFI_ERROR (Status);
--
2.39.0
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