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efi/libstub: zboot: Mark zboot EFI application as NX compatible

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Now that the zboot loader will invoke the EFI memory attributes protocol
to remap the decompressed code and rodata as read-only/executable, we
can set the PE/COFF header flag that indicates to the firmware that the
application does not rely on writable memory being executable at the
same time.

Cc: <stable@vger.kernel.org> # v6.2+
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel
2023-03-10 12:15:24 +01:00
parent fe15c26ee2
commit c7d9e628b8
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/efi/libstub/zboot-header.S
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@@ -63,7 +63,7 @@ __efistub_efi_zboot_header:
.long .Lefi_header_end - .Ldoshdr
.long 0
.short IMAGE_SUBSYSTEM_EFI_APPLICATION
.short 0
.short IMAGE_DLL_CHARACTERISTICS_NX_COMPAT
#ifdef CONFIG_64BIT
.quad 0, 0, 0, 0
#else