[tip: x86/urgent] x86/boot: Handle relative CONFIG_EFI_SBAT_FILE file paths

[tip-bot2 for Jan Stancek]

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     3d1973a0c76a78a4728cff13648a188ed486cf44
Gitweb:        https://git.kernel.org/tip/3d1973a0c76a78a4728cff13648a188ed486cf44
Author:        Jan Stancek <jstancek@xxxxxxxxxx>
AuthorDate:    Wed, 25 Feb 2026 20:30:23 +01:00
Committer:     Borislav Petkov (AMD) <bp@xxxxxxxxx>
CommitterDate: Wed, 04 Mar 2026 11:51:08 +01:00

x86/boot: Handle relative CONFIG_EFI_SBAT_FILE file paths

CONFIG_EFI_SBAT_FILE can be a relative path. When compiling using a different
output directory (O=) the build currently fails because it can't find the
filename set in CONFIG_EFI_SBAT_FILE:

  arch/x86/boot/compressed/sbat.S: Assembler messages:
  arch/x86/boot/compressed/sbat.S:6: Error: file not found: kernel.sbat

Add $(srctree) as include dir for sbat.o.

  [ bp: Massage commit message. ]

Fixes: 61b57d35396a ("x86/efi: Implement support for embedding SBAT data for x86")
Signed-off-by: Jan Stancek <jstancek@xxxxxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Reviewed-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Link: https://patch.msgid.link/f4eda155b0cef91d4d316b4e92f5771cb0aa7187.1772047658.git.jstancek@xxxxxxxxxx
---
 arch/x86/boot/compressed/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 68f9d7a..b8b2b7b 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -113,6 +113,7 @@ vmlinux-objs-$(CONFIG_EFI_SBAT) += $(obj)/sbat.o
 
 ifdef CONFIG_EFI_SBAT
 $(obj)/sbat.o: $(CONFIG_EFI_SBAT_FILE)
+AFLAGS_sbat.o += -I $(srctree)
 endif
 
 $(obj)/vmlinux: $(vmlinux-objs-y) $(vmlinux-libs-y) FORCE