lkml.org 
[lkml]   [2018]   [Oct]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] kdump, vmcoreinfo: Export sme_me_mask value to vmcoreinfo
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...

Ok, it uses vmcoreinfo to exclude pages which would mean, it accesses
the first kernel's pagetable and traverses it.

Am I close?

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.
--

\
 
 \ /
  Last update: 2018-10-26 18:37    [W:0.084 / U:0.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site