On Thu, Mar 24, 2022 at 02:21:09PM +0100, Gerd Hoffmann wrote:
> On Thu, Mar 24, 2022 at 06:34:02PM +0800, liuco...@kylinos.cn wrote:
> >ok, thanks, a lot of our customer use qxl on x86 before, so it still need
> >to supoort qxl on arm64.
>
> Well, qxl isn't the best choice even on x86. T
On Thu, Mar 24, 2022 at 06:34:02PM +0800, liuco...@kylinos.cn wrote:
>ok, thanks, a lot of our customer use qxl on x86 before, so it still need
>to supoort qxl on arm64.
Well, qxl isn't the best choice even on x86. The main advantage it
offers (2d acceleration) is basically useless today
On Thu, Mar 24, 2022 at 10:20:40AM +0100, Christian König wrote:
> Hi Cong,
>
> when I understand Robin correctly all mapping (host, guest, kernel,
> userspace etc..) must have the same caching attributes unless you use the
> S2FWB feature introduced with Armv8.4.
>
> If you don't follow those ru
physical
graphics card.
----
Cong.
*主 题：*Re: [PATCH v1 1/2] drm/qxl: replace
ioremap by ioremap_cache on arm64
*日 期：*2022-03-23 15:15
*发件人：*Christian König
*收件人：*CongLiuairlied@redhat.comkraxel@redhat.comairlied@linux.iedaniel@ffwll.chray.huang@amd.
On 2022-03-23 10:11, Gerd Hoffmann wrote:
On Wed, Mar 23, 2022 at 09:45:13AM +, Robin Murphy wrote:
On 2022-03-23 07:15, Christian K�nig wrote:
Am 22.03.22 um 10:34 schrieb Cong Liu:
qxl use ioremap to map ram_header and rom, in the arm64 implementation,
the device is mapped as DEVICE_nG
t fix the case in ttm. I send two patches at the same
time, but seems I miss
'--cover-letter' when run format-patch or some other bad operation.
Regards,
Cong.
*主 题：*Re: 回复: Re: [PATCH v1 1/2] drm/qxl: replace ioremap by
ioremap_cache on arm64
*日 期：*2022-03-23 17:34
On Wed, Mar 23, 2022 at 09:45:13AM +, Robin Murphy wrote:
> On 2022-03-23 07:15, Christian König wrote:
> > Am 22.03.22 um 10:34 schrieb Cong Liu:
> > > qxl use ioremap to map ram_header and rom, in the arm64 implementation,
> > > the device is mapped as DEVICE_nGnRE, it can not support unalign
Am 23.03.22 um 10:45 schrieb Robin Murphy:
On 2022-03-23 07:15, Christian König wrote:
Am 22.03.22 um 10:34 schrieb Cong Liu:
qxl use ioremap to map ram_header and rom, in the arm64 implementation,
the device is mapped as DEVICE_nGnRE, it can not support unaligned
access.
Well that some ARM b
On 2022-03-23 07:15, Christian König wrote:
Am 22.03.22 um 10:34 schrieb Cong Liu:
qxl use ioremap to map ram_header and rom, in the arm64 implementation,
the device is mapped as DEVICE_nGnRE, it can not support unaligned
access.
Well that some ARM boards doesn't allow unaligned access to MMIO
o
MMIO
space, all pci memory mapped as Device-nGnRE in arm64 cannot support
unaligned access. and qxl is a device simulated by qemu, it should be
able to access
to MMIO space in a more flexible way(PROT_NORMAL) than the real physical
graphics card.
Cong.
*主 题：*Re: [PATCH v1 1
Am 22.03.22 um 10:34 schrieb Cong Liu:
qxl use ioremap to map ram_header and rom, in the arm64 implementation,
the device is mapped as DEVICE_nGnRE, it can not support unaligned
access.
Well that some ARM boards doesn't allow unaligned access to MMIO space
is a well known bug of those ARM boar
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