在 2019年03月25日 14:40, Borislav Petkov 写道: > On Mon, Mar 25, 2019 at 11:11:45AM +0800, lijiang wrote: >> I mean it needs to find all the value of the 'IORES_DESC_ACPI_*' type. > > A function called __ioremap_check_desc_other() needs to find > IORES_DESC_ACPI_* types... > > No, still don't know what you're trying to do. Let's look at the discussion in patch v8, please refer to this link: https://lkml.org/lkml/2019/3/16/15 I did a test according to Tom's reply, and the test indicated his suggestion was correct, we should change this to check for IORES_DESC_ACPI_* values. > >> As above mentioned, it needs to find all the value of the 'IORES_DESC_ACPI_*' >> type, so we should explicitly use the 'IORES_DESC_ACPI_*' type as the check >> condition instead of the 'IORES_DESC_NONE'. > > And now the same question I'm asking you each time: WHY does it need to find > the ACPI types? > When SEV is enabled and the page being mapped is in memory, need to ensure the memory encryption attribute is also enabled in the resulting mapping. I believe Tom knows better than me. :-) Thanks. Lianbo _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
