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- bnc#612189 - Clear APIC Timer Initial Count Register when masking

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timer interrupt
  21542-amd-erratum-411.patch

OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=57
This commit is contained in:
Charles Arnold 2010-06-11 22:46:10 +00:00 committed by Git OBS Bridge
parent 581a173610
commit f45ba80345
3 changed files with 60 additions and 0 deletions
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51
21542-amd-erratum-411.patch Normal file
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@ -0,0 +1,51 @@
# HG changeset patch
# User Keir Fraser <keir.fraser@citrix.com>
# Date 1275892689 -3600
# Node ID 0251bbc0a9a879126bce65e47e4410575cfa73de
# Parent 7ff0e885b5c30cc8573b52144b274509e04759fd
AMD: Workaround for erratum 411
Clear APIC TMICT when we mask APIC LVTT.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Index: xen-4.0.0-testing/xen/arch/x86/apic.c
===================================================================
--- xen-4.0.0-testing.orig/xen/arch/x86/apic.c
+++ xen-4.0.0-testing/xen/arch/x86/apic.c
@@ -195,6 +195,9 @@ void clear_local_APIC(void)
maxlvt = get_maxlvt();
+ /* Work around AMD Erratum 411. This is a nice thing to do anyway. */
+ apic_write_around(APIC_TMICT, 0);
+
/*
* Masking an LVT entry on a P6 can trigger a local APIC error
* if the vector is zero. Mask LVTERR first to prevent this.
@@ -1184,7 +1187,10 @@ void disable_APIC_timer(void)
{
if (using_apic_timer) {
unsigned long v;
-
+
+ /* Work around AMD Erratum 411. This is a nice thing to do anyway. */
+ apic_write_around(APIC_TMICT, 0);
+
v = apic_read(APIC_LVTT);
apic_write_around(APIC_LVTT, v | APIC_LVT_MASKED);
}
Index: xen-4.0.0-testing/xen/arch/x86/hpet.c
===================================================================
--- xen-4.0.0-testing.orig/xen/arch/x86/hpet.c
+++ xen-4.0.0-testing/xen/arch/x86/hpet.c
@@ -659,8 +659,7 @@ void hpet_broadcast_enter(void)
if ( hpet_attach_channel )
hpet_attach_channel(cpu, ch);
- /* Cancel any outstanding LAPIC timer event and disable interrupts. */
- reprogram_timer(0);
+ /* Disable LAPIC timer interrupts. */
disable_APIC_timer();
cpu_set(cpu, ch->cpumask);

7
xen.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Mon Jun 7 10:55:20 MDT 2010 - carnold@novell.com
- bnc#612189 - Clear APIC Timer Initial Count Register when masking
timer interrupt
21542-amd-erratum-411.patch
-------------------------------------------------------------------
Fri Jun 4 10:48:30 MDT 2010 - carnold@novell.com

2
xen.spec
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@ -108,6 +108,7 @@ Patch30: 21421-vts-ats-enabling.patch
Patch31: 21435-vmx-retain-global-controls.patch
Patch32: 21459-block-script.patch
Patch33: 21460-xend-timeoffset.patch
Patch34: 21542-amd-erratum-411.patch
# Our patches
Patch300: xen-config.diff
Patch301: xend-config.diff
@ -585,6 +586,7 @@ Authors:
%patch31 -p1
%patch32 -p1
%patch33 -p1
%patch34 -p1
%patch300 -p1
%patch301 -p1
%patch302 -p1