From: Avi Kivity <avi@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
qemu-devel <qemu-devel@nongnu.org>,
Gerd Hoffmann <kraxel@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode
Date: Thu, 25 Aug 2011 10:19:53 +0300 [thread overview]
Message-ID: <4E55F799.2050103@redhat.com> (raw)
In-Reply-To: <3d9d904a1e4939a147f8954c9e0d4cdaf3d44c31.1314033132.git.jan.kiszka@siemens.com>
On 08/22/2011 08:12 PM, Jan Kiszka wrote:
> Most VGA memory access modes require MMIO handling as they demand weird
> logic to get a byte from or into the video RAM. However, there is one
> exception: chain 4 mode with all memory planes enabled for writing. This
> mode actually allows lineary mapping, which can then be combined with
> dirty logging to accelerate KVM.
>
> This patch accelerates specifically VBE accesses like they are used by
> grub in graphical mode. Not only the standard VGA adapter benefits from
> this, also vmware and spice in VGA mode.
>
>
On which version of grub does this work? This isn't having any effect
on my Fedora grub.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2011-08-25 7:20 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-22 17:12 [Qemu-devel] [PATCH v3 0/6] vga: dirty log cleanup, more linear mapping Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 1/6] vmware-vga: Register reset service Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 2/6] vmware-vga: Disable verbose mode Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 3/6] vmware-vga: Remove dead DIRECT_VRAM mode Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 4/6] vmware-vga: Eliminate vga_dirty_log_restart Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode Jan Kiszka
2011-08-25 7:19 ` Avi Kivity [this message]
2011-08-25 9:07 ` Jan Kiszka
2011-08-25 9:16 ` Avi Kivity
2011-08-25 9:21 ` Jan Kiszka
2011-08-25 10:45 ` Avi Kivity
2011-08-25 10:51 ` Jan Kiszka
2011-08-25 11:19 ` Avi Kivity
2011-08-25 11:28 ` Jan Kiszka
2011-09-12 15:20 ` Alexander Graf
2011-09-12 15:33 ` Jan Kiszka
2011-09-12 15:45 ` Andreas Färber
2011-09-12 15:49 ` Jan Kiszka
2011-09-12 15:57 ` Jan Kiszka
2011-09-13 7:39 ` Alexander Graf
2011-09-13 8:14 ` Jan Kiszka
2011-09-13 8:17 ` Alexander Graf
2011-09-13 8:19 ` Andreas Färber
2011-09-13 8:40 ` Alexander Graf
2011-09-13 9:00 ` Jan Kiszka
2011-09-13 9:42 ` Alexander Graf
2011-09-13 11:34 ` Jan Kiszka
2011-09-13 19:39 ` Blue Swirl
2011-09-14 7:11 ` Avi Kivity
2011-09-14 7:42 ` Alexander Graf
2011-09-14 8:02 ` Jan Kiszka
2011-09-14 8:17 ` Avi Kivity
2011-09-14 8:20 ` Jan Kiszka
2011-09-14 8:22 ` Avi Kivity
2011-09-14 8:24 ` Jan Kiszka
2011-09-14 8:27 ` Alexander Graf
2011-09-14 8:33 ` Jan Kiszka
2011-09-14 8:35 ` Avi Kivity
2011-09-14 20:06 ` Blue Swirl
2011-09-14 20:14 ` Alexander Graf
2011-09-14 20:16 ` Avi Kivity
2011-09-14 20:35 ` Alexander Graf
2011-09-14 20:42 ` Richard Henderson
2011-09-14 21:27 ` Andreas Färber
2011-09-14 21:41 ` Alexander Graf
2011-09-15 1:24 ` Benjamin Herrenschmidt
2011-09-15 7:32 ` Avi Kivity
2011-09-15 7:35 ` Alexander Graf
2011-09-15 10:01 ` Benjamin Herrenschmidt
2011-09-15 11:31 ` Avi Kivity
2011-09-17 21:40 ` Blue Swirl
2011-09-18 11:28 ` Avi Kivity
2011-09-19 9:15 ` Alexander Graf
2011-09-19 9:22 ` Avi Kivity
2011-09-19 9:36 ` Alexander Graf
2011-09-19 9:48 ` Avi Kivity
2011-09-14 20:15 ` Avi Kivity
2011-09-14 20:25 ` Blue Swirl
2011-09-15 7:30 ` Avi Kivity
2011-09-13 9:43 ` Andreas Färber
2011-09-12 20:21 ` Blue Swirl
2011-09-13 6:54 ` Alexander Graf
2011-09-13 7:51 ` Avi Kivity
2011-09-13 7:54 ` Alexander Graf
2011-09-13 8:10 ` Avi Kivity
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 6/6] vga: Drop some unused fields Jan Kiszka
2011-08-22 20:18 ` [Qemu-devel] [PATCH v3 0/6] vga: dirty log cleanup, more linear mapping Anthony Liguori
2011-08-22 20:36 ` Jan Kiszka
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