xen/23795-intel-ich10-quirk.patch
Charles Arnold 800917b5a2 - bnc#717650 - Unable to start VM
- Update to Xen 4.1.2_rc2 c/s 23152

- bnc#716695 - domUs using tap devices will not start
  updated multi-xvdp.patch

- Upstream patches from Jan
  23803-intel-pmu-models.patch
  23800-x86_64-guest-addr-range.patch
  23795-intel-ich10-quirk.patch
  23804-x86-IPI-counts.patch 

- bnc#706106 - Inconsistent reporting of VM names during migration
  xend-migration-domname-fix.patch

- bnc#712823 - L3:Xen guest does not start reliable when rebooted
  xend-vcpu-affinity-fix.patch

OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=143
2011-09-15 21:43:21 +00:00

83 lines
2.4 KiB
Diff

References: bnc#683580
# HG changeset patch
# User Jan Beulich <jbeulich@novell.com>
# Date 1314443678 -3600
# Node ID e17f70940d1f57fe04dde3bf4e243f75c89f0d0e
# Parent 4705eca37c9fac9d13867a856bdcfa8b7bad56c6
x86: work around certain Intel BIOSes causing (transient) hangs during boot
They apparently leave the USB legacy emulation bits set in ICH10's
SMI Control and Enable register, but fail to handle the resulting SMIs
gracefully. The hangs can apparently extend indefinitely, but are
commonly observed to last between a few seconds and a minute.
This assumes that only ICH10-based systems on Intel main boards with
Intel BIOS may be affected. Until Intel comes up with a more precise
identification of affected BIOSes, all Intel ones on Intel boards
will get this workaround applied.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Index: xen-4.1.2-testing/xen/arch/x86/dmi_scan.c
===================================================================
--- xen-4.1.2-testing.orig/xen/arch/x86/dmi_scan.c
+++ xen-4.1.2-testing/xen/arch/x86/dmi_scan.c
@@ -10,6 +10,8 @@
#include <asm/system.h>
#include <xen/dmi.h>
#include <xen/efi.h>
+#include <xen/pci.h>
+#include <xen/pci_regs.h>
#define bt_ioremap(b,l) ((void *)__acpi_map_table(b,l))
#define bt_iounmap(b,l) ((void)0)
@@ -278,6 +280,28 @@ static __init int broken_toshiba_keyboar
return 0;
}
+static int __init ich10_bios_quirk(struct dmi_system_id *d)
+{
+ u32 port, smictl;
+
+ if ( pci_conf_read16(0, 0x1f, 0, PCI_VENDOR_ID) != 0x8086 )
+ return 0;
+
+ switch ( pci_conf_read16(0, 0x1f, 0, PCI_DEVICE_ID) ) {
+ case 0x3a14:
+ case 0x3a16:
+ case 0x3a18:
+ case 0x3a1a:
+ port = (pci_conf_read16(0, 0x1f, 0, 0x40) & 0xff80) + 0x30;
+ smictl = inl(port);
+ /* turn off LEGACY_USB{,2}_EN if enabled */
+ if ( smictl & 0x20008 )
+ outl(smictl & ~0x20008, port);
+ break;
+ }
+
+ return 0;
+}
#ifdef CONFIG_ACPI_SLEEP
static __init int reset_videomode_after_s3(struct dmi_blacklist *d)
@@ -363,6 +387,18 @@ static __initdata struct dmi_blacklist d
} },
#endif
+ { ich10_bios_quirk, "Intel board & BIOS",
+ /*
+ * BIOS leaves legacy USB emulation enabled while
+ * SMM can't properly handle it.
+ */
+ {
+ MATCH(DMI_BOARD_VENDOR, "Intel Corp"),
+ MATCH(DMI_BIOS_VENDOR, "Intel Corp"),
+ NO_MATCH, NO_MATCH
+ }
+ },
+
#ifdef CONFIG_ACPI_BOOT
/*
* If your system is blacklisted here, but you find that acpi=force