From: "David S. Miller" <davem@redhat.com>
To: andrea@suse.de
Cc: linux-kernel@vger.kernel.org
Subject: Re: flush_tlb_all in vmalloc_area_pages
Date: Thu, 20 Sep 2001 14:26:38 -0700 (PDT) [thread overview]
Message-ID: <20010920.142638.68040129.davem@redhat.com> (raw)
In-Reply-To: <20010907165612.T11329@athlon.random>
In-Reply-To: <20010907165612.T11329@athlon.random>
From: Andrea Arcangeli <andrea@suse.de>
Date: Fri, 7 Sep 2001 16:56:12 +0200
For the flush_cache_all for the virtually indexed caches should be the
same issue in theory (at least the kmap logic only needs to flush the
caches before the unmapping [not before the mapping] too)
Am I missing something, Dave?
Anything that creates or takes away vmalloc() mappings needs to flush
the data cache if it is virtuall indexed.
I am always uncomfortable when I see people suggesting to remove
flushes from kernel virtual mapping setup/teardown.
Later,
David S. Miller
davem@redhat.com
next prev parent reply other threads:[~2001-09-20 21:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-07 14:56 flush_tlb_all in vmalloc_area_pages Andrea Arcangeli
2001-09-20 21:26 ` David S. Miller [this message]
2001-09-20 22:25 ` Andrea Arcangeli
2001-09-20 22:29 ` David S. Miller
2001-09-20 22:38 ` Andrea Arcangeli
2001-09-20 22:52 ` Andrea Arcangeli
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