linux-kernel - [PATCH] xtensa: merge stack alignment definitions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20220319201047.3006578-1-jcmvbkbc@gmail.com>
Date:   Sat, 19 Mar 2022 13:10:47 -0700
From:   Max Filippov <jcmvbkbc@...il.com>
To:     linux-xtensa@...ux-xtensa.org
Cc:     Chris Zankel <chris@...kel.net>, linux-kernel@...r.kernel.org,
        Max Filippov <jcmvbkbc@...il.com>
Subject: [PATCH] xtensa: merge stack alignment definitions

xtensa currently has two different definitions for stack alignment.
Replace it with single definition usable in both C and assembly.

Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
---
 arch/xtensa/include/asm/asmmacro.h  | 2 --
 arch/xtensa/include/asm/core.h      | 7 +++++++
 arch/xtensa/include/asm/processor.h | 6 +-----
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/arch/xtensa/include/asm/asmmacro.h b/arch/xtensa/include/asm/asmmacro.h
index 3190157950fa..e3474ca411ff 100644
--- a/arch/xtensa/include/asm/asmmacro.h
+++ b/arch/xtensa/include/asm/asmmacro.h
@@ -225,8 +225,6 @@
 #endif
 	.endm
 
-#define XTENSA_STACK_ALIGNMENT		16
-
 #if defined(__XTENSA_WINDOWED_ABI__)
 
 /* Assembly instructions for windowed kernel ABI. */
diff --git a/arch/xtensa/include/asm/core.h b/arch/xtensa/include/asm/core.h
index 9138077e567d..f856d2bcb9f3 100644
--- a/arch/xtensa/include/asm/core.h
+++ b/arch/xtensa/include/asm/core.h
@@ -37,4 +37,11 @@
 #endif
 #endif
 
+/* Xtensa ABI requires stack alignment to be at least 16 */
+#if XCHAL_DATA_WIDTH > 16
+#define XTENSA_STACK_ALIGNMENT	XCHAL_DATA_WIDTH
+#else
+#define XTENSA_STACK_ALIGNMENT	16
+#endif
+
 #endif
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index 37d3e9887fe7..ba62bbcea160 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -18,11 +18,7 @@
 #include <asm/types.h>
 #include <asm/regs.h>
 
-/* Xtensa ABI requires stack alignment to be at least 16 */
-
-#define STACK_ALIGN (XCHAL_DATA_WIDTH > 16 ? XCHAL_DATA_WIDTH : 16)
-
-#define ARCH_SLAB_MINALIGN STACK_ALIGN
+#define ARCH_SLAB_MINALIGN XTENSA_STACK_ALIGNMENT
 
 /*
  * User space process size: 1 GB.
-- 
2.30.2