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 v3 02/16] powerpc: Override __ALIGN and __ALIGN_STR macros
Date: Mon, 12 Sep 2022 13:50:06 +0530 [thread overview]
Message-ID: <20220912082020.226755-3-sv@linux.ibm.com> (raw)
In-Reply-To: <20220912082020.226755-1-sv@linux.ibm.com>
In a subsequent patch, we would want to annotate powerpc assembly functions
with SYM_FUNC_START_LOCAL macro. This macro depends on __ALIGN macro.
The default expansion of __ALIGN macro is:
#define __ALIGN .align 4,0x90
So, override __ALIGN and __ALIGN_STR macros to use the same alignment as
that of the existing _GLOBAL macro. Also, do not pad with 0x90, because
repeated 0x90s are not a nop or trap on powerpc.
Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com>
---
arch/powerpc/include/asm/linkage.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/include/asm/linkage.h b/arch/powerpc/include/asm/linkage.h
index b71b9582e754..b88d1d2cf304 100644
--- a/arch/powerpc/include/asm/linkage.h
+++ b/arch/powerpc/include/asm/linkage.h
@@ -4,6 +4,9 @@
#include <asm/types.h>
+#define __ALIGN .align 2
+#define __ALIGN_STR ".align 2"
+
#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:[~2022-09-12 8:23 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 8:20 [PATCH v3 00/16] objtool: Enable and implement --mcount option on powerpc Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 01/16] powerpc: Fix __WARN_FLAGS() for use with Objtool Sathvika Vasireddy
2022-09-12 8:20 ` Sathvika Vasireddy [this message]
2022-09-13 12:03 ` [PATCH v3 02/16] powerpc: Override __ALIGN and __ALIGN_STR macros Peter Zijlstra
2022-09-13 12:21 ` Christophe Leroy
2022-09-13 13:15 ` Peter Zijlstra
2022-09-12 8:20 ` [PATCH v3 03/16] powerpc: Fix objtool unannotated intra-function call warnings Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 04/16] powerpc: Curb objtool unannotated intra-function warnings Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 05/16] powerpc: Skip objtool from running on drivers/crypto/vmx/aesp8-ppc.o Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 06/16] powerpc: Fix objtool unannotated intra-function call warnings on PPC32 Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 07/16] powerpc: Skip objtool from running on VDSO files Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 08/16] objtool: Fix SEGFAULT Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 09/16] objtool: Use target file endianness instead of a compiled constant Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 10/16] objtool: Use target file class size " Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 11/16] objtool: Add --mnop as an option to --mcount Sathvika Vasireddy
2022-09-12 18:55 ` kernel test robot
2022-09-15 6:56 ` Naveen N. Rao
2022-09-17 19:12 ` kernel test robot
2022-09-28 0:48 ` [objtool] ca5e2b42c0: kernel_BUG_at_arch/x86/kernel/jump_label.c kernel test robot
2022-09-28 15:44 ` Nathan Chancellor
2022-09-28 19:13 ` Josh Poimboeuf
2022-09-28 20:45 ` Nathan Chancellor
2022-09-12 8:20 ` [PATCH v3 12/16] objtool: Read special sections with alts only when specific options are selected Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 13/16] objtool: Use macros to define arch specific reloc types Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 14/16] objtool: Add arch specific function arch_ftrace_match() Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 15/16] objtool/powerpc: Enable objtool to be built on ppc Sathvika Vasireddy
2022-09-12 8:20 ` [PATCH v3 16/16] objtool/powerpc: Add --mcount specific implementation Sathvika Vasireddy
2022-09-13 10:00 ` Christophe Leroy
2022-09-13 14:13 ` [PATCH v3 00/16] objtool: Enable and implement --mcount option on powerpc Peter Zijlstra
2022-09-14 0:15 ` Josh Poimboeuf
2022-09-21 9:10 ` Sathvika Vasireddy
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