On Sat, Sep 26, 2020 at 06:26:02PM +0800, Adrian Huang wrote: > From: Adrian Huang <[email protected]> > > Commit 387caf0b759a ("iommu/amd: Treat per-device exclusion > ranges as r/w unity-mapped regions") accidentally overwrites > the 'flags' field in IVMD (struct ivmd_header) when the I/O > virtualization memory definition is associated with the > exclusion range entry. This leads to the corrupted IVMD table > (incorrect checksum). The kdump kernel reports the invalid checksum: > > ACPI BIOS Warning (bug): Incorrect checksum in table [IVRS] - 0x5C, should be > 0x60 (20200717/tbprint-177) > AMD-Vi: [Firmware Bug]: IVRS invalid checksum > > Fix the above-mentioned issue by modifying the 'struct unity_map_entry' > member instead of the IVMD header. > > Cleanup: The *exclusion_range* functions are not used anymore, so > get rid of them. > > Fixes: 387caf0b759a ("iommu/amd: Treat per-device exclusion ranges as r/w > unity-mapped regions") > Reported-and-tested-by: Baoquan He <[email protected]> > Signed-off-by: Adrian Huang <[email protected]> > Cc: Jerry Snitselaar <[email protected]> > --- > drivers/iommu/amd/init.c | 56 +++++++--------------------------------- > 1 file changed, 10 insertions(+), 46 deletions(-)
Applied for v5.9, thanks everyone. _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
