| From 4068fd42c891ea6ebdec056f461babc6e4048844 Mon Sep 17 00:00:00 2001 |
| From: Gary Lin <glin@suse.com> |
| Date: Thu, 8 Apr 2021 16:23:03 +0800 |
| Subject: [PATCH] mok: allocate MOK config table as BootServicesData |
| |
| Linux kernel is picky when reserving the memory for x86 and it only |
| expects BootServicesData: |
| |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/platform/efi/quirks.c?h=v5.11#n254 |
| |
| Otherwise, the following error would show during system boot: |
| |
| Apr 07 12:31:56.743925 localhost kernel: efi: Failed to lookup EFI memory descriptor for 0x000000003dcf8000 |
| |
| Although BootServicesData would be reclaimed after ExitBootService(), |
| linux kernel reserves MOK config table when it detects the existence of |
| the table, so it's fine to allocate the table as BootServicesData. |
| |
| Signed-off-by: Gary Lin <glin@suse.com> |
| --- |
| mok.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| diff --git a/mok.c b/mok.c |
| index 9e37d6a..9b8fc2b 100644 |
| --- a/mok.c |
| +++ b/mok.c |
| @@ -999,7 +999,7 @@ EFI_STATUS import_mok_state(EFI_HANDLE image_handle) |
| npages = ALIGN_VALUE(config_sz, PAGE_SIZE) >> EFI_PAGE_SHIFT; |
| config_table = NULL; |
| efi_status = gBS->AllocatePages(AllocateAnyPages, |
| - EfiRuntimeServicesData, |
| + EfiBootServicesData, |
| npages, |
| (EFI_PHYSICAL_ADDRESS *)&config_table); |
| if (EFI_ERROR(efi_status) || !config_table) { |
| -- |
| 2.33.0.309.g3052b89438-goog |
| |
