Commit 393fccdf6c73 ("efi_loader: efi_guid_t must be 64-bit aligned") has changed the alignment of efi_guid_t. This changed the size of struct efi_configuration_table on 32-bit systems form 20 to 24 bytes. As an array of this type is pointed to by the system table this breaks compatibility with existing versions of GRUB and Linux. Let's get back the original size by using the attribute __packed.

Fixes: 393fccdf6c73 ("efi_loader: efi_guid_t must be 64-bit aligned") Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- include/efi_api.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/efi_api.h b/include/efi_api.h index e850b951eb..10bcb5a1df 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -299,7 +299,7 @@ struct efi_runtime_services { struct efi_configuration_table { efi_guid_t guid; void *table; -}; +} __packed;

#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)