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| author | Gerd Hoffmann <kraxel@redhat.com> | 2023-01-11 19:00:23 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-01-12 10:37:16 +0000 |
| commit | e5ec3ba409b5baa9cf429cc25fdf3c8d1b8dcef0 (patch) | |
| tree | cfefbdb4c2efd89f1ced7c37e603998a7dc8658a /OvmfPkg | |
| parent | 85fd05ab975f76567caf9383d76f6808363f6b47 (diff) | |
| download | edk2-e5ec3ba409b5baa9cf429cc25fdf3c8d1b8dcef0.tar.gz edk2-e5ec3ba409b5baa9cf429cc25fdf3c8d1b8dcef0.tar.bz2 edk2-e5ec3ba409b5baa9cf429cc25fdf3c8d1b8dcef0.zip | |
OvmfPkg/VirtNorFlashDxe: map flash memory as uncacheable
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 <kraxel@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c b/OvmfPkg/VirtNorFlashDxe/VirtNorFlashDxe.c index ff3121af2a..f9a41f6aab 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);
|