From: Pete Zaitcev <zaitcev@redhat.com>
To: sparclinux@vger.kernel.org
Subject: Re: [SPARC32] Fix BUG-on-swapout
Date: Tue, 06 Jan 2004 04:55:44 +0000 [thread overview]
Message-ID: <20040106045544.GA26852@devserv.devel.redhat.com> (raw)
In-Reply-To: <20040106040805.GA13026@foobazco.org>
On Mon, Jan 05, 2004 at 08:08:05PM -0800, Keith M Wesolowski wrote:
>
> This fixes BUG-on-swapout for srmmu-based systems. The problem is
> caused by kmap_atomic_to_page being fed an aliased (pagetable) address
> and returning bogons. This also adjusts the pkmap and fixmap base
> addresses so they cannot overlap.
Go, Keith!
> --- 2.5-sparc/arch/sparc/mm/fault.c Sat Jan 3 02:08:08 2004
> +++ 2.5-sparc-smp/arch/sparc/mm/fault.c Sat Jan 3 02:11:02 2004
> @@ -36,7 +36,7 @@
>
> #define ELEMENTS(arr) (sizeof (arr)/sizeof (arr[0]))
>
> -extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
> +extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
> extern int prom_node_root;
>
> /* At boot time we determine these two values necessary for setting
> --- 2.5-sparc/include/asm-sparc/page.h Sat Jan 3 02:08:30 2004
> +++ 2.5-sparc-smp/include/asm-sparc/page.h Sat Jan 3 02:11:28 2004
> @@ -54,7 +54,7 @@
>
> #define SPARC_PHYS_BANKS 32
>
> -extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
> +extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
>
> /* Cache alias structure. Entry is valid if context != -1. */
> struct cache_palias {
Seems that the first one can be just removed altogether,
since you're on it.
> --- 2.5-sparc/include/asm-sparc/kmap_types.h Sat Jan 3 02:08:30 2004
> +++ 2.5-sparc-smp/include/asm-sparc/kmap_types.h Sat Jan 3 02:11:28 2004
> @@ -11,6 +11,7 @@
> KM_BIO_DST_IRQ,
> KM_PTE0,
> KM_PTE1,
> + KM_PTE2,
> KM_IRQ0,
> KM_IRQ1,
> KM_SOFTIRQ0,
Is this needed for anything?
-- Pete
next prev parent reply other threads:[~2004-01-06 4:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-06 4:08 [SPARC32] Fix BUG-on-swapout Keith M Wesolowski
2004-01-06 4:14 ` David S. Miller
2004-01-06 4:55 ` Pete Zaitcev [this message]
2004-01-06 5:24 ` Keith M Wesolowski
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