linux-hardening - [PATCH v5 23/27] efi/libstub: Don't set ramdisk_image/ramdisk

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Date:   Tue, 14 Mar 2023 13:13:50 +0300
From:   Evgeniy Baskov <baskov@...ras.ru>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Evgeniy Baskov <baskov@...ras.ru>, Borislav Petkov <bp@...en8.de>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Alexey Khoroshilov <khoroshilov@...ras.ru>,
        Peter Jones <pjones@...hat.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        "Limonciello, Mario" <mario.limonciello@....com>,
        joeyli <jlee@...e.com>, lvc-project@...uxtesting.org,
        x86@...nel.org, linux-efi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: [PATCH v5 23/27] efi/libstub: Don't set ramdisk_image/ramdisk_size

The local copy of the boot_params made during build time is used now,
so setting ramdisk_image/ramdisk_size fields is no longer needed,
since they are already set to 0.

Remove no longer required assignments.

Signed-off-by: Evgeniy Baskov <baskov@...ras.ru>
---
 drivers/firmware/efi/libstub/x86-stub.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c
index 5dbc9c7a4aa3..7c5561aaba71 100644
--- a/drivers/firmware/efi/libstub/x86-stub.c
+++ b/drivers/firmware/efi/libstub/x86-stub.c
@@ -389,9 +389,6 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 	efi_set_u64_split((unsigned long)cmdline_ptr, &hdr->cmd_line_ptr,
 			  &efi_boot_params.ext_cmd_line_ptr);
 
-	hdr->ramdisk_image = 0;
-	hdr->ramdisk_size = 0;
-
 	efi_stub_entry(handle, sys_table_arg, &efi_boot_params);
 	/* not reached */
 
-- 
2.39.2