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authorZachary Amsden <zach@vmware.com>2006-01-06 00:11:50 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:34 -0800
commitff6e8c0d5e47f0ceeebde86ec2f5919dbd5beb67 (patch)
treef7e50b5962b7b38ca025c0bf9ee48b618424cc6b /arch/i386/kernel
parenteb05c3249a8e8a675e79d221f4a0874dc10ec903 (diff)
[PATCH] x86: Cr4 is valid on some 486s
So some 486 processors do have CR4 register. Allow them to present it in register dumps by using the old fault technique rather than testing processor family. Thanks to Maciej for noticing this. Signed-off-by: Zachary Amsden <zach@vmware.com> Cc: "Seth, Rohit" <rohit.seth@intel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel')
-rw-r--r--arch/i386/kernel/process.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index 2333aead056..6081a10d341 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -308,9 +308,7 @@ void show_regs(struct pt_regs * regs)
cr0 = read_cr0();
cr2 = read_cr2();
cr3 = read_cr3();
- if (current_cpu_data.x86 > 4) {
- cr4 = read_cr4();
- }
+ cr4 = read_cr4_safe();
printk("CR0: %08lx CR2: %08lx CR3: %08lx CR4: %08lx\n", cr0, cr2, cr3, cr4);
show_trace(NULL, &regs->esp);
}