On 3/30/21 10:52 AM, Jacob Pan wrote:
> Hi Guenter,
>
> On Mon, 22 Mar 2021 10:53:38 -0700, Guenter Roeck
> wrote:
>
>> On Tue, Mar 02, 2021 at 02:13:57AM -0800, Jacob Pan wrote:
>>> Write protect bit, when set, inhibits supervisor writes to the read-only
>>> pages. In supervisor shared virtual
Hi Guenter,
On Mon, 22 Mar 2021 10:53:38 -0700, Guenter Roeck
wrote:
> On Tue, Mar 02, 2021 at 02:13:57AM -0800, Jacob Pan wrote:
> > Write protect bit, when set, inhibits supervisor writes to the read-only
> > pages. In supervisor shared virtual addressing (SVA), where page tables
> > are share
On Tue, Mar 02, 2021 at 02:13:57AM -0800, Jacob Pan wrote:
> Write protect bit, when set, inhibits supervisor writes to the read-only
> pages. In supervisor shared virtual addressing (SVA), where page tables
> are shared between CPU and DMA, IOMMU PASID entry WPE bit should match
> CR0.WP bit in th
On 3/2/21 6:13 PM, Jacob Pan wrote:
Write protect bit, when set, inhibits supervisor writes to the read-only
pages. In supervisor shared virtual addressing (SVA), where page tables
are shared between CPU and DMA, IOMMU PASID entry WPE bit should match
CR0.WP bit in the CPU.
This patch sets WPE bi
Write protect bit, when set, inhibits supervisor writes to the read-only
pages. In supervisor shared virtual addressing (SVA), where page tables
are shared between CPU and DMA, IOMMU PASID entry WPE bit should match
CR0.WP bit in the CPU.
This patch sets WPE bit for supervisor PASIDs if CR0.WP is s
