xen/26427-x86-AMD-enable-WC+.patch
Charles Arnold 0d71e75f73 - Add upstream patch to fix vfb/vkb initialization in libxl
26369-libxl-devid.patch

- fate##313584: pass bios information to XEN HVM guest
  26554-hvm-firmware-passthrough.patch
  26555-hvm-firmware-passthrough.patch
  26556-hvm-firmware-passthrough.patch

- Upstream patches from Jan
  26516-ACPI-parse-table-retval.patch (Replaces CVE-2013-0153-xsa36.patch)
  26517-AMD-IOMMU-clear-irtes.patch (Replaces CVE-2013-0153-xsa36.patch)
  26518-AMD-IOMMU-disable-if-SATA-combined-mode.patch (Replaces CVE-2013-0153-xsa36.patch)
  26519-AMD-IOMMU-perdev-intremap-default.patch (Replaces CVE-2013-0153-xsa36.patch)
  26526-pvdrv-no-devinit.patch
  26529-gcc48-build-fix.patch
  26531-AMD-IOMMU-IVHD-special-missing.patch (Replaces CVE-2013-0153-xsa36.patch)
  26532-AMD-IOMMU-phantom-MSI.patch
  26536-xenoprof-div-by-0.patch
  26576-x86-APICV-migration.patch
  26577-x86-APICV-x2APIC.patch
  26578-AMD-IOMMU-replace-BUG_ON.patch

- bnc#797014 - no way to control live migrations
  26547-tools-xc_fix_logic_error_in_stdiostream_progress.patch
  26548-tools-xc_handle_tty_output_differently_in_stdiostream_progress.patch
  26549-tools-xc_turn_XCFLAGS_*_into_shifts.patch
  26550-tools-xc_restore_logging_in_xc_save.patch
  26551-tools-xc_log_pid_in_xc_save-xc_restore_output.patch

- PVonHVM: __devinit was removed in linux-3.8

OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=229
2013-02-22 21:42:01 +00:00

52 lines
1.6 KiB
Diff

# HG changeset patch
# User Boris Ostrovsky <boris.ostrovsky@amd.com>
# Date 1358508058 -3600
# Node ID 8f6dd5dc5d6cdd56050ed917a0c30903bbddcbf0
# Parent eb8e9a23925d7b77c344a4a99679a45f96754a17
x86/AMD: Enable WC+ memory type on family 10 processors
In some cases BIOS may not enable WC+ memory type on family 10 processors,
instead converting what would be WC+ memory to CD type. On guests using
nested pages this could result in performance degradation. This patch
enables WC+.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
--- a/xen/arch/x86/cpu/amd.c
+++ b/xen/arch/x86/cpu/amd.c
@@ -534,6 +534,19 @@ static void __devinit init_amd(struct cp
}
#endif
+ if (c->x86 == 0x10) {
+ /*
+ * On family 10h BIOS may not have properly enabled WC+
+ * support, causing it to be converted to CD memtype. This may
+ * result in performance degradation for certain nested-paging
+ * guests. Prevent this conversion by clearing bit 24 in
+ * MSR_F10_BU_CFG2.
+ */
+ rdmsrl(MSR_F10_BU_CFG2, value);
+ value &= ~(1ULL << 24);
+ wrmsrl(MSR_F10_BU_CFG2, value);
+ }
+
/*
* Family 0x12 and above processors have APIC timer
* running in deep C states.
--- a/xen/include/asm-x86/msr-index.h
+++ b/xen/include/asm-x86/msr-index.h
@@ -215,8 +215,9 @@
#define MSR_F10_MC4_MISC2 0xc0000409
#define MSR_F10_MC4_MISC3 0xc000040A
-/* AMD Family10h MMU control MSRs */
-#define MSR_F10_BU_CFG 0xc0011023
+/* AMD Family10h Bus Unit MSRs */
+#define MSR_F10_BU_CFG 0xc0011023
+#define MSR_F10_BU_CFG2 0xc001102a
/* Other AMD Fam10h MSRs */
#define MSR_FAM10H_MMIO_CONF_BASE 0xc0010058