On 2023/3/6 10:49, Huacai Chen wrote:
Hi, Christian,
On Mon, Mar 6, 2023 at 12:40 AM Christian König
wrote:
Am 05.03.23 um 06:21 schrieb Huacai Chen:
LoongArch maintains cache coherency in hardware, but its WUC attribute
(Weak-ordered UnCached, which is similar to WC) is out of the scope of
Am 06.03.23 um 04:01 schrieb WANG Xuerui:
On 2023/3/6 10:49, Huacai Chen wrote:
Hi, Christian,
On Mon, Mar 6, 2023 at 12:40 AM Christian König
wrote:
Am 05.03.23 um 06:21 schrieb Huacai Chen:
LoongArch maintains cache coherency in hardware, but its WUC attribute
(Weak-ordered UnCached, whic
Hi, Christian,
On Mon, Mar 6, 2023 at 12:40 AM Christian König
wrote:
>
> Am 05.03.23 um 06:21 schrieb Huacai Chen:
> > LoongArch maintains cache coherency in hardware, but its WUC attribute
> > (Weak-ordered UnCached, which is similar to WC) is out of the scope of
> > cache coherency machanism.
Am 05.03.23 um 06:21 schrieb Huacai Chen:
LoongArch maintains cache coherency in hardware, but its WUC attribute
(Weak-ordered UnCached, which is similar to WC) is out of the scope of
cache coherency machanism. This means WUC can only used for write-only
memory regions. So use uncached ioremap()
LoongArch maintains cache coherency in hardware, but its WUC attribute
(Weak-ordered UnCached, which is similar to WC) is out of the scope of
cache coherency machanism. This means WUC can only used for write-only
memory regions. So use uncached ioremap() for LoongArch in the amdgpu
driver.
Signed-