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Re: [Qemu-devel] [PATCH 4/4] [wip] ehci: don't flush cache on dorbell ri

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH 4/4] [wip] ehci: don't flush cache on dorbell rings.
Date: Thu, 21 Jun 2012 11:28:03 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120601 Thunderbird/10.0.5

On 06/20/12 14:41, Gerd Hoffmann wrote:
> Commit 4be23939ab0d7019c7e59a37485b416fbbf0f073 makes ehci instantly
> zap any unlinked queue heads when the guest rings the dorbell.

[ ... ]

> Simply not zapping queue heads on doorbell rings fixes the issue, but of 
> course
> re-introduces the risk of using cached but stale information.

Improved version attached.


Attachment: 0001-wip-ehci-don-t-flush-cache-on-dorbell-rings.patch
Description: Text document

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