在 2018年10月27日 00:35, Borislav Petkov 写道: > On Fri, Oct 26, 2018 at 08:32:11PM +0800, lijiang wrote: >> If SME is enabled in the first kernel, the crash kernel's page table(pgd/pud/pmd/pte) >> contains the memory encryption mask, so i have to remove the sme mask to obtain the >> true physical address when dump vmcore. > > Sorry, I have no clue what makedumpfile does exactly so you'd have to > be more detailed (or wait until I look at it :)). Which kernel accesses > which kernel's pagetable? > > /me goes and looks at the makedumpfile's manpage... > So sorry that i should provide more detail about this. Thanks a lot for spending time reading the manpage. > Ok, it uses vmcoreinfo to exclude pages which would mean, it accesses > the first kernel's pagetable and traverses it. > > Am I close? > Yes, your explanation is perfect. Thanks. Lianbo _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
