From: Fam Zheng <famz@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: mst@redhat.com, qemu-stable@nongnu.org, qemu-devel@nongnu.org,
alex.williamson@redhat.com, stefanha@redhat.com,
afaerber@suse.de
Subject: Re: [Qemu-devel] [PATCH] ahci: Fix FLUSH command
Date: Tue, 16 Jul 2013 14:50:24 +0800 [thread overview]
Message-ID: <20130716065024.GA11561@T430s.redhat.com> (raw)
In-Reply-To: <1373880871-28521-1-git-send-email-kwolf@redhat.com>
On Mon, 07/15 11:34, Kevin Wolf wrote:
> AHCI couldn't cope with asynchronous commands that aren't doing DMA, it
> simply wouldn't complete them. Due to the bug fixed in commit f68ec837,
> FLUSH commands would seem to have completed immediately even if they
> were still running on the host. After the commit, they would simply hang
> and never unset the BSY bit, rendering AHCI unusable on any OS sending
> flushes.
>
> This patch adds another callback for the completion of asynchronous
> commands. This is what AHCI really wants to use for its command
> completion logic rather than an DMA completion callback.
>
> Cc: qemu-stable@nongnu.org
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Works for me, thanks.
Tested-by: Fam Zheng <famz@redhat.com>
next prev parent reply other threads:[~2013-07-16 6:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-15 9:34 [Qemu-devel] [PATCH] ahci: Fix FLUSH command Kevin Wolf
2013-07-15 9:47 ` Stefan Hajnoczi
2013-07-15 21:26 ` Alex Williamson
2013-07-16 6:50 ` Fam Zheng [this message]
2013-07-16 12:30 ` Andreas Färber
2013-07-16 12:45 ` Kevin Wolf
2013-07-16 12:39 ` Michael S. Tsirkin
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