Change Details

There is a hardware problem between Cortex-A9 CPUs and on-chip devices in Armada 38X SoCs that may cause hang on heavy load. This can be however worked around by mapping all registers and PCI IO as strongly ordered instead of device memory. This fix will not influence userspace which will still see old meaning of those flags. This is not a problem as we want for example vmstat to show actual memory attributes. Submitted by: Zbigniew Bodek <zbb@semihalf.com> Obtained from: Semihalf Sponsored by: Stormshield Reviewed by: Differential revision:

There is a hardware problem between Cortex-A9 CPUs and on-chip devices in Armada 38X SoCs that may cause hang on heavy load. This can be however worked around by mapping all registers and PCI IO as strongly ordered instead of device memory. Submitted by: Zbigniew Bodek <zbb@semihalf.com> Obtained from: Semihalf Sponsored by: Stormshield

There is a hardware problem between Cortex-A9 CPUs and on-chip devices in Armada 38X SoCs that may cause hang on heavy load. This can be however worked around by mapping all registers and PCI IO as strongly ordered instead of device memory. This fix will not influence userspace which will still see old meaning of those flags. This is not a problem as we want for example vmstat to show actual memory attributes. Submitted by: Zbigniew Bodek <zbb@semihalf.com> Obtained from: Semihalf Sponsored by: Stormshield Reviewed by: Differential revision: