| Message ID | 20230615123959.12298-1-jgross@suse.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 30d65d1b19850c9bc8c17dba8ebe9be5e0c17054 |
| Headers | show |
| Series | x86/xen: set default memory type for pv guests to WB | expand |
On 6/15/23 8:39 AM, Juergen Gross wrote: > 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> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 8732b85d5650..93b658248d01 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -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)
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> --- Based on tip x86/mtrr branch --- arch/x86/xen/enlighten_pv.c | 2 ++ 1 file changed, 2 insertions(+)