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Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses |
Date: |
Wed, 20 Jul 2011 16:27:08 +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 2011-07-20 14:15, Jan Kiszka wrote:
> On 2011-07-20 14:00, Isaku Yamahata wrote:
>> Hi. This clean up looks good basically.
>
> Oops, forgot to cc you. Sorry.
>
>> But when conventional pci device is accessed via MMCONFIG area,
>> addr &= addr_mask doesn't work as expected.
>> The config area of [256, 4K) of conventional pci should have no effect.
>
> Mmh, I see. Looks like we need to split accesses at this boundary and
> executed them separately.
Nope, no such issue: we already automatically split up accesses that
span the legacy/extended boundary. Just like so far, legacy config space
handlers have to filter out requests that address regions >= 256.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
- [Qemu-devel] [PATCH] pci: Length-align config space accesses, Jan Kiszka, 2011/07/19
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Isaku Yamahata, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Jan Kiszka, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses,
Jan Kiszka <=
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Isaku Yamahata, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Michael S. Tsirkin, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Jan Kiszka, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Isaku Yamahata, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Michael S. Tsirkin, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Jan Kiszka, 2011/07/20
- Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Michael S. Tsirkin, 2011/07/20
Re: [Qemu-devel] [PATCH] pci: Length-align config space accesses, Michael S. Tsirkin, 2011/07/20