From: Peter Zijlstra <peterz@infradead.org>
To: David Woodhouse <dwmw2@infradead.org>,
Josh Poimboeuf <jpoimboe@redhat.com>
Cc: linux-kernel@vger.kernel.org, Dave Hansen <dave.hansen@intel.com>,
Ashok Raj <ashok.raj@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tim Chen <tim.c.chen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg KH <gregkh@linuxfoundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Andi Kleen <ak@linux.intel.com>,
Arjan Van De Ven <arjan.van.de.ven@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Jun Nakajima <jun.nakajima@intel.com>,
Asit Mallick <asit.k.mallick@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Borislav Petkov <bp@alien8.de>
Subject: [PATCH 4/4] x86: Reindent _static_cpu_has
Date: Mon, 15 Jan 2018 17:44:32 +0100 [thread overview]
Message-ID: <20180115164909.949786209@infradead.org> (raw)
In-Reply-To: <20180115164428.498966552@infradead.org>
[-- Attachment #1: peterz-fix-static_cpu_has.patch --]
[-- Type: text/plain, Size: 3013 bytes --]
Because its daft..
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/include/asm/cpufeature.h | 78 +++++++++++++++++++-------------------
1 file changed, 39 insertions(+), 39 deletions(-)
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -145,45 +145,45 @@ extern void clear_cpu_cap(struct cpuinfo
*/
static __always_inline __pure bool _static_cpu_has(u16 bit)
{
- asm_volatile_goto("1: jmp 6f\n"
- "2:\n"
- ".skip -(((5f-4f) - (2b-1b)) > 0) * "
- "((5f-4f) - (2b-1b)),0x90\n"
- "3:\n"
- ".section .altinstructions,\"a\"\n"
- " .long 1b - .\n" /* src offset */
- " .long 4f - .\n" /* repl offset */
- " .word %P1\n" /* always replace */
- " .byte 3b - 1b\n" /* src len */
- " .byte 5f - 4f\n" /* repl len */
- " .byte 3b - 2b\n" /* pad len */
- ".previous\n"
- ".section .altinstr_replacement,\"ax\"\n"
- "4: jmp %l[t_no]\n"
- "5:\n"
- ".previous\n"
- ".section .altinstructions,\"a\"\n"
- " .long 1b - .\n" /* src offset */
- " .long 0\n" /* no replacement */
- " .word %P0\n" /* feature bit */
- " .byte 3b - 1b\n" /* src len */
- " .byte 0\n" /* repl len */
- " .byte 0\n" /* pad len */
- ".previous\n"
- ".section .altinstr_aux,\"ax\"\n"
- "6:\n"
- " testb %[bitnum],%[cap_byte]\n"
- " jnz %l[t_yes]\n"
- " jmp %l[t_no]\n"
- ".previous\n"
- : : "i" (bit), "i" (X86_FEATURE_ALWAYS),
- [bitnum] "i" (1 << (bit & 7)),
- [cap_byte] "m" (((const char *)boot_cpu_data.x86_capability)[bit >> 3])
- : : t_yes, t_no);
- t_yes:
- return true;
- t_no:
- return false;
+ asm_volatile_goto("1: jmp 6f\n"
+ "2:\n"
+ ".skip -(((5f-4f) - (2b-1b)) > 0) * "
+ "((5f-4f) - (2b-1b)),0x90\n"
+ "3:\n"
+ ".section .altinstructions,\"a\"\n"
+ " .long 1b - .\n" /* src offset */
+ " .long 4f - .\n" /* repl offset */
+ " .word %P1\n" /* always replace */
+ " .byte 3b - 1b\n" /* src len */
+ " .byte 5f - 4f\n" /* repl len */
+ " .byte 3b - 2b\n" /* pad len */
+ ".previous\n"
+ ".section .altinstr_replacement,\"ax\"\n"
+ "4: jmp %l[t_no]\n"
+ "5:\n"
+ ".previous\n"
+ ".section .altinstructions,\"a\"\n"
+ " .long 1b - .\n" /* src offset */
+ " .long 0\n" /* no replacement */
+ " .word %P0\n" /* feature bit */
+ " .byte 3b - 1b\n" /* src len */
+ " .byte 0\n" /* repl len */
+ " .byte 0\n" /* pad len */
+ ".previous\n"
+ ".section .altinstr_aux,\"ax\"\n"
+ "6:\n"
+ " testb %[bitnum],%[cap_byte]\n"
+ " jnz %l[t_yes]\n"
+ " jmp %l[t_no]\n"
+ ".previous\n"
+ : : "i" (bit), "i" (X86_FEATURE_ALWAYS),
+ [bitnum] "i" (1 << (bit & 7)),
+ [cap_byte] "m" (((const char *)boot_cpu_data.x86_capability)[bit >> 3])
+ : : t_yes, t_no);
+t_yes:
+ return true;
+t_no:
+ return false;
}
#define static_cpu_has(bit) \
next prev parent reply other threads:[~2018-01-15 16:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-15 16:44 [PATCH 0/4] objtool validation of static branches Peter Zijlstra
2018-01-15 16:44 ` [PATCH 1/4] objtool: Implement base jump_assert support Peter Zijlstra
2018-01-15 17:39 ` Josh Poimboeuf
2018-01-15 18:00 ` Peter Zijlstra
2018-01-15 16:44 ` [PATCH 2/4] objtool: Implement jump_assert for _static_cpu_has() Peter Zijlstra
2018-01-15 18:04 ` Josh Poimboeuf
2018-01-15 18:12 ` Peter Zijlstra
2018-01-15 18:34 ` Josh Poimboeuf
2018-01-15 18:59 ` Borislav Petkov
2018-01-15 19:08 ` Josh Poimboeuf
2018-01-15 19:11 ` Josh Poimboeuf
2018-01-15 19:15 ` Borislav Petkov
2018-01-15 20:15 ` Peter Zijlstra
2018-01-15 20:30 ` Josh Poimboeuf
2018-01-15 16:44 ` [PATCH 3/4] x86/jump_label: Implement arch_static_assert() Peter Zijlstra
2018-01-15 17:22 ` Josh Poimboeuf
2018-01-15 17:41 ` David Woodhouse
2018-01-15 17:58 ` Peter Zijlstra
2018-01-15 18:28 ` Josh Poimboeuf
2018-01-15 16:44 ` Peter Zijlstra [this message]
2018-01-15 17:15 ` [PATCH 4/4] x86: Reindent _static_cpu_has Josh Poimboeuf
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