From: Andi Kleen <ak@suse.de>
To: patches@x86-64.org, linux-kernel@vger.kernel.org
Subject: [PATCH] [14/30] i386: Implement alternative_io for i386
Date: Tue, 1 May 2007 05:58:12 +0200 (CEST) [thread overview]
Message-ID: <20070501035812.0FF5613CAF@wotan.suse.de> (raw)
In-Reply-To: <20070501557.815359000@suse.de>
Ported from x86-64.
Signed-off-by: Andi Kleen <ak@suse.de>
---
include/asm-i386/alternative.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
Index: linux/include/asm-i386/alternative.h
===================================================================
--- linux.orig/include/asm-i386/alternative.h
+++ linux/include/asm-i386/alternative.h
@@ -82,6 +82,21 @@ static inline void alternatives_smp_swit
"663:\n\t" newinstr "\n664:\n" /* replacement */\
".previous" :: "i" (feature), ##input)
+/* Like alternative_input, but with a single output argument */
+#define alternative_io(oldinstr, newinstr, feature, output, input...) \
+ asm volatile ("661:\n\t" oldinstr "\n662:\n" \
+ ".section .altinstructions,\"a\"\n" \
+ " .align 4\n" \
+ " .long 661b\n" /* label */ \
+ " .long 663f\n" /* new instruction */ \
+ " .byte %c[feat]\n" /* feature bit */ \
+ " .byte 662b-661b\n" /* sourcelen */ \
+ " .byte 664f-663f\n" /* replacementlen */ \
+ ".previous\n" \
+ ".section .altinstr_replacement,\"ax\"\n" \
+ "663:\n\t" newinstr "\n664:\n" /* replacement */ \
+ ".previous" : output : [feat] "i" (feature), ##input)
+
/*
* Alternative inline assembly for SMP.
*
next prev parent reply other threads:[~2007-05-01 4:05 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-01 3:57 [PATCH] [0/30] x86 candidate patches for review VII: VDSO, CPUID, NMI watchdog, MCE, misc Andi Kleen
2007-05-01 3:57 ` [PATCH] [1/30] x86_64: Dynamically adjust machine check interval Andi Kleen
2007-05-01 3:57 ` [PATCH] [2/30] x86_64: set node_possible_map at runtime - try 2 Andi Kleen
2007-05-01 3:58 ` [PATCH] [3/30] i386: Clean up NMI watchdog code Andi Kleen
2007-05-01 3:58 ` [PATCH] [4/30] x86_64: Use the 32bit wd_ops for 64bit too Andi Kleen
2007-05-01 3:58 ` [PATCH] [5/30] x86_64: Define IGNORE_IOCTL() macro for compat_ioctls Andi Kleen
2007-05-01 3:58 ` [PATCH] [6/30] x86_64: Shut up 32bit emulation for SIOCGIFCOUNT Andi Kleen
2007-05-01 3:58 ` [PATCH] [7/30] x86_64: Avoid overflows during apic timer calibration Andi Kleen
2007-05-01 3:58 ` [PATCH] [8/30] x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu Andi Kleen
2007-05-01 5:57 ` Jeremy Fitzhardinge
2007-05-01 7:23 ` Andi Kleen
2007-05-01 8:00 ` Jeremy Fitzhardinge
2007-05-01 3:58 ` [PATCH] [9/30] x86_64: Use symbolic CPU features in early CPUID check Andi Kleen
2007-05-01 3:58 ` [PATCH] [10/30] x86_64: Drop -traditional for arch/x86_64/boot Andi Kleen
2007-05-01 3:58 ` [PATCH] [11/30] i386: Drop -traditional in arch/i386/boot Andi Kleen
2007-05-01 3:58 ` [PATCH] [12/30] i386: Verify important CPUID bits in real mode Andi Kleen
2007-05-01 3:58 ` [PATCH] [13/30] i386: Evaluate constant cpu features at runtime Andi Kleen
2007-05-01 3:58 ` Andi Kleen [this message]
2007-05-01 3:58 ` [PATCH] [15/30] i386: Implement X86_FEATURE_SYNC_RDTSC on i386 Andi Kleen
2007-05-01 3:58 ` [PATCH] [16/30] i386: Add X86_FEATURE_RDTSCP Andi Kleen
2007-05-01 3:58 ` [PATCH] [17/30] x86: Use RDTSCP for synchronous get_cycles if possible Andi Kleen
2007-05-01 3:58 ` [PATCH] [18/30] x86_64: Don't enable NUMA for a single node in K8 NUMA scanning Andi Kleen
2007-05-01 3:58 ` [PATCH] [19/30] i386: Little cleanups in smpboot.c Andi Kleen
2007-05-01 3:58 ` [PATCH] [20/30] i386: Remove copy_*_user BUG_ONs for (size < 0) Andi Kleen
2007-05-01 3:58 ` [PATCH] [21/30] x86_64: Print type and size correctly for unknown compat ioctls Andi Kleen
2007-05-01 3:58 ` [PATCH] [22/30] x86_64: Remove CONFIG_REORDER Andi Kleen
2007-05-01 3:58 ` [PATCH] [23/30] x86_64: Share identical video.S between i386 and x86-64 Andi Kleen
2007-05-01 3:58 ` [PATCH] [24/30] x86_64: Shut up warnings for vfat compat ioctls on other file systems Andi Kleen
2007-05-01 15:45 ` Chuck Ebbert
2007-05-02 10:46 ` Andi Kleen
2007-05-01 3:58 ` [PATCH] [25/30] x86_64: Fix allnoconfig error in genapic_flat.c Andi Kleen
2007-05-01 3:58 ` [PATCH] [26/30] i386: Drop noisy e820 debugging printks Andi Kleen
2007-05-01 3:58 ` [PATCH] [27/30] i386: white space fixes in i387.h Andi Kleen
2007-05-01 3:58 ` [PATCH] [28/30] i386: avoid redundant preempt_disable in __unlazy_fpu Andi Kleen
2007-05-01 3:58 ` [PATCH] [29/30] x86_64: Don't exclude asm-offsets.c in Documentation/dontdiff Andi Kleen
2007-05-01 3:58 ` [PATCH] [30/30] x86_64: Add missing !X86_PAE dependincy to the 2G/2G split Andi Kleen
2007-05-01 4:26 ` Eric Dumazet
2007-05-01 6:21 ` Andi Kleen
2007-05-01 13:01 ` Bill Irwin
2007-05-01 13:49 ` Mark Lord
2007-05-01 15:51 ` Eric Dumazet
2007-05-01 17:00 ` Bill Irwin
2007-05-01 17:17 ` Eric W. Biederman
2007-05-01 20:41 ` Eric Dumazet
2007-05-02 9:38 ` Andi Kleen
2007-05-01 4:37 ` William Lee Irwin III
2007-05-01 4:57 ` Eric Dumazet
2007-05-01 5:11 ` William Lee Irwin III
2007-05-01 5:35 ` Eric W. Biederman
2007-05-01 13:32 ` Mark Lord
2007-05-01 14:17 ` William Lee Irwin III
2007-05-01 14:20 ` Mark Lord
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