Hi Bjorn,
On 2021/5/8 5:14, Bjorn Helgaas wrote:
On Fri, May 07, 2021 at 12:49:53PM +, Wang Xingang wrote:
From: Xingang Wang
When request ACS for PCI device in of_iommu_configure, the pci device
has already been scanned and added with 'pci_acs_enable=0'. So the
pci_request_acs() in curre
On Fri, May 07, 2021 at 12:49:53PM +, Wang Xingang wrote:
> From: Xingang Wang
>
> When request ACS for PCI device in of_iommu_configure, the pci device
> has already been scanned and added with 'pci_acs_enable=0'. So the
> pci_request_acs() in current procedure does not work for enabling ACS
From: Xingang Wang
When request ACS for PCI device in of_iommu_configure, the pci device
has already been scanned and added with 'pci_acs_enable=0'. So the
pci_request_acs() in current procedure does not work for enabling ACS.
Besides, the ACS should be enabled only if there's an IOMMU in system.
