On Sun, Dec 15, 2019 at 01:39:31PM +0800, Lu Baolu wrote: > Hi, > > On 12/13/19 1:36 PM, Jerry Snitselaar wrote: > > Currently the reserved region for ISA is allocated with no > > permissions. If a dma domain is being used, mapping this region will > > fail. Set the permissions to DMA_PTE_READ|DMA_PTE_WRITE. > > > > Cc: Joerg Roedel <jroedel@xxxxxxx> > > Cc: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> > > Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx > > Cc: stable@xxxxxxxxxxxxxxx # v5.3+ > > Fixes: d850c2ee5fe2 ("iommu/vt-d: Expose ISA direct mapping region via iommu_get_resv_regions") > > Signed-off-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> > > This fix looks reasonable to me. > > Acked-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Applied for v5.5, thanks.