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Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of in
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop |
Date: |
Sun, 24 Jun 2012 16:40:15 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2012-06-24 16:35, Avi Kivity wrote:
> On 06/24/2012 05:08 PM, Jan Kiszka wrote:
>> As a first step, I will post a series later that gets rid of
>> kvm_flush_coalesced_mmio_buffer in the common vmexit path.
>
> If you defer this, I can think of two places that need to flush:
> - anything that accesses those memory areas (such as DMA to the
> framebuffer, or updating the display)
- anything that accesses related areas (in case of VGA: PIO accesses to
the control ports). I'm providing memory_region_set_flush_coalesced that
allows to flush on non-coalesced region accesses as well. Some PIO
accesses unfortunately still need open-coded
qemu_flush_coalesced_mmio_buffer as they do not use memory regions yet.
> - anything that modifies the memory map and possibly changes flushed
> addresses
Good point, need to address this.
Jan
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- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, (continued)
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Marcelo Tosatti, 2012/06/23
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Jan Kiszka, 2012/06/23
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Avi Kivity, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Jan Kiszka, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Avi Kivity, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, liu ping fan, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Jan Kiszka, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Avi Kivity, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop,
Jan Kiszka <=
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Avi Kivity, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Jan Kiszka, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Avi Kivity, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Jan Kiszka, 2012/06/24
- Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Avi Kivity, 2012/06/24
Re: [Qemu-devel] [PATCH] kvm: First step to push iothread lock out of inner run loop, Marcelo Tosatti, 2012/06/26