From: Andi Kleen <ak@muc.de>
To: Andrew Morton <akpm@osdl.org>
Cc: ak@muc.de, linux-mm@kvack.org
Subject: Re: current -linus tree dies on x86_64
Date: 24 May 2004 02:09:29 +0200 [thread overview]
Date: Mon, 24 May 2004 02:09:29 +0200 [thread overview]
Message-ID: <20040524000929.GA91820@colin2.muc.de> (raw)
In-Reply-To: <20040523012149.68fcde6d.akpm@osdl.org>
On Sun, May 23, 2004 at 01:21:49AM -0700, Andrew Morton wrote:
> Andrew Morton <akpm@osdl.org> wrote:
> >
> > Andrew Morton <akpm@osdl.org> wrote:
> > >
> > > As soon as I put in enough memory pressure to start swapping it oopses in
> > > release_pages().
> >
> > I'm doing the bsearch on this.
>
> The crash is caused by the below changeset. I was using my own .config so
> the defconfig update is not the cause. I guess either the pageattr.c
> changes or the instruction replacements. The lesson here is to split dem
> patches up a bit!
>
> Anyway. Over to you, Andi.
Reverting this patch seems to fix it. But I have no idea why.
More tomorrow.
-Andi
diff -burpN -X ../KDIFX linux-vanilla/include/asm-x86_64/processor.h linux-2.6.6-amd64/include/asm-x86_64/processor.h
--- linux-vanilla/include/asm-x86_64/processor.h 2004-05-14 13:13:50.000000000 +0200
+++ linux-2.6.6-amd64/include/asm-x86_64/processor.h 2004-05-09 23:10:51.000000000 +0200
@@ -345,7 +345,17 @@ struct extended_sigtable {
/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
#define MICROCODE_IOCFREE _IO('6',0)
+/* generic versions from gas */
+#define GENERIC_NOP1 ".byte 0x90\n"
+#define GENERIC_NOP2 ".byte 0x89,0xf6\n"
+#define GENERIC_NOP3 ".byte 0x8d,0x76,0x00\n"
+#define GENERIC_NOP4 ".byte 0x8d,0x74,0x26,0x00\n"
+#define GENERIC_NOP5 GENERIC_NOP1 GENERIC_NOP4
+#define GENERIC_NOP6 ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n"
+#define GENERIC_NOP7 ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n"
+#define GENERIC_NOP8 GENERIC_NOP1 GENERIC_NOP7
+#ifdef CONFIG_MK8
#define ASM_NOP1 K8_NOP1
#define ASM_NOP2 K8_NOP2
#define ASM_NOP3 K8_NOP3
@@ -354,6 +364,16 @@ struct extended_sigtable {
#define ASM_NOP6 K8_NOP6
#define ASM_NOP7 K8_NOP7
#define ASM_NOP8 K8_NOP8
+#else
+#define ASM_NOP1 GENERIC_NOP1
+#define ASM_NOP2 GENERIC_NOP2
+#define ASM_NOP3 GENERIC_NOP3
+#define ASM_NOP4 GENERIC_NOP4
+#define ASM_NOP5 GENERIC_NOP5
+#define ASM_NOP6 GENERIC_NOP6
+#define ASM_NOP7 GENERIC_NOP7
+#define ASM_NOP8 GENERIC_NOP8
+#endif
/* Opteron nops */
#define K8_NOP1 ".byte 0x90\n"
--
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prev parent reply other threads:[~2004-05-24 0:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-22 21:48 Andrew Morton
2004-05-23 6:58 ` Andrew Morton
2004-05-23 8:21 ` Andrew Morton
2004-05-23 14:33 ` Andi Kleen
2004-05-24 0:09 ` Andi Kleen [this message]
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