[RFC PATCH v2 36/45] arm64/efi: Add ALLINT to IRQ flags checks
From: Vladimir Murzin <hidden>
Date: 2026-07-27 16:38:04
Subsystem:
arm64 port (aarch64 architecture), extensible firmware interface (efi), the rest · Maintainers:
Catalin Marinas, Will Deacon, Ard Biesheuvel, Linus Torvalds
EFI is not expected to modify PSTATE.ALLINT, so check that it remains unchanged across EFI runtime calls. Signed-off-by: Vladimir Murzin <redacted> Reviewed-by: Jinjie Ruan <redacted> --- arch/arm64/include/asm/efi.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index 0fc5a8cd5850..c7fb21c00690 100644
--- a/arch/arm64/include/asm/efi.h
+++ b/arch/arm64/include/asm/efi.h@@ -78,6 +78,10 @@ do { \ pr_err_ratelimited(FW_BUG "DAIF+PMR corrupted (0x%x + 0x%x=>0x%x + 0x%x) by EFI call from %pS\n", \ __expected.daif, __expected.pmr, __actual.daif, __actual.pmr, \ caller ?: __builtin_return_address(0)); \ + } else if (system_uses_nmi()) { \ + pr_err_ratelimited(FW_BUG "DAIF+ALLINT corrupted (0x%x + 0x%x=>0x%x + 0x%x) by EFI call from %pS\n", \ + __expected.daif, __expected.allint, __actual.daif, __actual.allint, \ + caller ?: __builtin_return_address(0)); \ } else { \ pr_err_ratelimited(FW_BUG "DAIF corrupted (0x%x=>0x%x) by EFI call from %pS\n", \ __expected.daif, __actual.daif, \
--
2.34.1