From: Sathvika Vasireddy <sv@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: peterz@infradead.org, npiggin@gmail.com,
linux-kernel@vger.kernel.org, aik@ozlabs.ru, mingo@redhat.com,
sv@linux.ibm.com, rostedt@goodmis.org, jpoimboe@redhat.com,
naveen.n.rao@linux.vnet.ibm.com, mbenes@suse.cz,
chenzhongjin@huawei.com
Subject: [PATCH v2 02/16] powerpc: override __ALIGN() and __ALIGN_STR() macros
Date: Mon, 29 Aug 2022 11:22:09 +0530 [thread overview]
Message-ID: <20220829055223.24767-3-sv@linux.ibm.com> (raw)
In-Reply-To: <20220829055223.24767-1-sv@linux.ibm.com>
Powerpc instructions must be word-aligned. Currently,
there is an alignment of 16 bytes (by default), and it is
much more than what is required for powerpc (4 bytes).
The default expansion of __ALIGN() macro is:
#define __ALIGN .align 4,0x90
Since Powerpc Linux does not require a 16 byte alignment,
override __ALIGN() and __ALIGN_STR() macros to use required
4 byte alignment.
Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com>
---
arch/powerpc/include/asm/linkage.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/include/asm/linkage.h b/arch/powerpc/include/asm/linkage.h
index b71b9582e754..8df88fe61438 100644
--- a/arch/powerpc/include/asm/linkage.h
+++ b/arch/powerpc/include/asm/linkage.h
@@ -2,8 +2,12 @@
#ifndef _ASM_POWERPC_LINKAGE_H
#define _ASM_POWERPC_LINKAGE_H
+#include <linux/stringify.h>
#include <asm/types.h>
+#define __ALIGN .align 2
+#define __ALIGN_STR __stringify(__ALIGN)
+
#ifdef CONFIG_PPC64_ELF_ABI_V1
#define cond_syscall(x) \
asm ("\t.weak " #x "\n\t.set " #x ", sys_ni_syscall\n" \
--
2.31.1
next prev parent reply other threads:[~2022-08-29 5:53 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 5:52 [PATCH v2 00/16] objtool: Enable and implement --mcount option on powerpc Sathvika Vasireddy
2022-08-29 5:52 ` [PATCH v2 01/16] powerpc: Replace unreachable() with it's builtin variant in __WARN_FLAGS() Sathvika Vasireddy
2022-08-30 6:15 ` Christophe Leroy
2022-09-05 10:18 ` Naveen N. Rao
2022-08-29 5:52 ` Sathvika Vasireddy [this message]
2022-08-29 13:26 ` [PATCH v2 02/16] powerpc: override __ALIGN() and __ALIGN_STR() macros Christophe Leroy
2022-08-29 14:39 ` Sathvika Vasireddy
2022-08-31 3:24 ` Nicholas Piggin
2022-08-31 7:22 ` Michael Ellerman
2022-09-05 11:03 ` Peter Zijlstra
2022-08-29 5:52 ` [PATCH v2 03/16] powerpc: Fix objtool unannotated intra-function call warnings Sathvika Vasireddy
2022-08-30 6:16 ` Christophe Leroy
2022-08-30 12:42 ` Christophe Leroy
2022-09-05 11:02 ` Peter Zijlstra
2022-08-29 5:52 ` [PATCH v2 04/16] powerpc: Curb objtool unannotated intra-function warnings Sathvika Vasireddy
2022-08-30 6:26 ` Christophe Leroy
2022-08-29 5:52 ` [PATCH v2 05/16] powerpc: Skip objtool from running on drivers/crypto/vmx/aesp8-ppc.o Sathvika Vasireddy
2022-08-30 6:26 ` Christophe Leroy
2022-09-01 19:17 ` Peter Zijlstra
2022-09-05 10:47 ` Naveen N. Rao
2022-08-29 5:52 ` [PATCH v2 06/16] powerpc: Fix objtool unannotated intra-function call warnings on PPC32 Sathvika Vasireddy
2022-08-29 5:52 ` [PATCH v2 07/16] powerpc: Skip objtool from running on VDSO files Sathvika Vasireddy
2022-08-30 6:27 ` Christophe Leroy
2022-09-01 19:19 ` Peter Zijlstra
2022-09-02 7:40 ` Michael Ellerman
2022-08-29 5:52 ` [PATCH v2 08/16] objtool: Fix SEGFAULT Sathvika Vasireddy
2022-09-01 19:20 ` Peter Zijlstra
2022-09-02 8:06 ` Christophe Leroy
2022-09-02 8:42 ` Peter Zijlstra
2022-08-29 5:52 ` [PATCH v2 09/16] objtool: Use target file endianness instead of a compiled constant Sathvika Vasireddy
2022-09-01 19:22 ` Peter Zijlstra
2022-08-29 5:52 ` [PATCH v2 10/16] objtool: Use target file class size " Sathvika Vasireddy
2022-09-01 19:23 ` Peter Zijlstra
2022-08-29 5:52 ` [PATCH v2 11/16] objtool: Add --mnop as an option to --mcount Sathvika Vasireddy
2022-08-30 6:28 ` Christophe Leroy
2022-09-01 19:25 ` Peter Zijlstra
2022-09-05 10:55 ` Naveen N. Rao
2022-08-29 5:52 ` [PATCH v2 12/16] objtool: Read special sections with alts only when specific options are selected Sathvika Vasireddy
2022-08-30 6:31 ` Christophe Leroy
2022-08-29 5:52 ` [PATCH v2 13/16] objtool: Use macros to define arch specific reloc types Sathvika Vasireddy
2022-08-30 6:33 ` Christophe Leroy
2022-09-01 19:28 ` Peter Zijlstra
2022-08-29 5:52 ` [PATCH v2 14/16] objtool: Add arch specific function arch_ftrace_match() Sathvika Vasireddy
2022-08-30 6:36 ` Christophe Leroy
2022-08-29 5:52 ` [PATCH v2 15/16] objtool/powerpc: Enable objtool to be built on ppc Sathvika Vasireddy
2022-08-30 6:41 ` Christophe Leroy
2022-09-05 10:37 ` Naveen N. Rao
2023-02-04 8:19 ` Randy Dunlap
2023-02-04 8:21 ` Randy Dunlap
2023-02-04 8:30 ` Randy Dunlap
2023-02-04 11:55 ` Christophe Leroy
2023-02-04 13:10 ` Christophe Leroy
2023-02-04 15:47 ` Josh Poimboeuf
2022-09-01 9:32 ` Christophe Leroy
2022-09-01 15:11 ` Segher Boessenkool
2022-09-01 16:38 ` Christophe Leroy
2022-09-01 19:01 ` Peter Zijlstra
2022-08-29 5:52 ` [PATCH v2 16/16] objtool/powerpc: Add --mcount specific implementation Sathvika Vasireddy
2022-08-30 6:44 ` Christophe Leroy
2022-08-31 12:50 ` Christophe Leroy
2022-08-31 17:51 ` Segher Boessenkool
2022-09-05 10:45 ` Naveen N. Rao
2022-09-05 20:43 ` Segher Boessenkool
2022-09-06 6:22 ` Christophe Leroy
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