On 12/09/2024 14:10, Ard Biesheuvel wrote:
> Does the below help at all?
>
> --- a/drivers/firmware/efi/tpm.c
> +++ b/drivers/firmware/efi/tpm.c
> @@ -60,7 +60,7 @@ int __init efi_tpm_eventlog_init(void)
> }
>
> tbl_size = sizeof(*log_tbl) + log_tbl->size;
> - memblock_reserve(efi.tpm_log, tbl_size);
> + efi_mem_reserve(efi.tpm_log, tbl_size);
>
> if (efi.tpm_final_log == EFI_INVALID_TABLE_ADDR) {
> pr_info("TPM Final Events table not present\n");
Unfortunately not. efi_mem_reserve updates e820_table, while kexec looks at /sys/firmware/memmap
which is e820_table_firmware.
arch_update_firmware_area introduced in the RFC patch does the same thing as efi_mem_reserve does at
its end, just with e820_table_firmware instead of e820_table.
i.e. efi_mem_reserve does:
e820__range_update(addr, size, E820_TYPE_RAM, E820_TYPE_RESERVED);
e820__update_table(e820_table);
while arch_update_firmware_area does:
e820__range_update_firmware(addr, size, E820_TYPE_RAM, E820_TYPE_RESERVED);
e820__update_table(e820_table_firmware);
Thanks,
Usama
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