On Fri, May 19, 2023 at 02:14:29AM +0300, Kirill A. Shutemov wrote:
> diff --git a/arch/x86/boot/compressed/mem.c b/arch/x86/boot/compressed/mem.c
> index 67594fcb11d9..87372b96d613 100644
> --- a/arch/x86/boot/compressed/mem.c
> +++ b/arch/x86/boot/compressed/mem.c
> @@ -1,9 +1,32 @@
> // SPDX-License-Identifier: GPL-2.0-only
>
> #include "error.h"
> +#include "misc.h"
>
> void arch_accept_memory(phys_addr_t start, phys_addr_t end)
> {
> /* Platform-specific memory-acceptance call goes here */
> error("Cannot accept memory");
> }
> +
> +void init_unaccepted_memory(void)
> +{
> + guid_t guid = LINUX_EFI_UNACCEPTED_MEM_TABLE_GUID;
> + struct efi_unaccepted_memory *unaccepted_table;
> + unsigned long cfg_table_pa;
> + unsigned int cfg_table_len;
> + int ret;
> +
> + ret = efi_get_conf_table(boot_params, &cfg_table_pa, &cfg_table_len);
> + if (ret)
> + error("EFI config table not found.");
> +
> + unaccepted_table = (void *)efi_find_vendor_table(boot_params,
> + cfg_table_pa,
> + cfg_table_len,
> + guid);
> + if (unaccepted_table->version != 1)
> + error("Unknown version of unaccepted memory table\n");
> +
> + set_unaccepted_table(unaccepted_table);
> +}
0-day reported boot failure outdise TDX guest with CONFIG_INTEL_TDX_GUEST=y.
The fixup:
diff --git a/arch/x86/boot/compressed/mem.c b/arch/x86/boot/compressed/mem.c
index 0108c97399a5..8df3d988ae69 100644
--- a/arch/x86/boot/compressed/mem.c
+++ b/arch/x86/boot/compressed/mem.c
@@ -56,6 +56,9 @@ void init_unaccepted_memory(void)
cfg_table_pa,
cfg_table_len,
guid);
+ if (!unaccepted_table)
+ return;
+
if (unaccepted_table->version != 1)
error("Unknown version of unaccepted memory table\n");
--
Kiryl Shutsemau / Kirill A. Shutemov
