github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-27 08:33:17 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

x86/xen: Set default memory type for PV guests to WB

Browse Source 
When running as an unprivileged PV guest under Xen (not dom0), the
default MTRR memory type should be write-back.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20230615123959.12298-1-jgross@suse.com
This commit is contained in:
Juergen Gross 2023-06-15 14:39:59 +02:00 committed by Borislav Petkov (AMD)
parent 7c1dee734f
commit 30d65d1b19
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/xen/enlighten_pv.c
View File

@ -187,6 +187,8 @@ static void __init xen_pv_init_platform(void)
if (xen_initial_domain())
xen_set_mtrr_data();
else
mtrr_overwrite_state(NULL, 0, MTRR_TYPE_WRBACK);
}
static void __init xen_pv_guest_late_init(void)