Displaying 4 results from an estimated 4 matches for "fengzhe".
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shengzhe
2011 Feb 16
8
[PATCH] irq: Exclude percpu IRQs from being fixed up
...ixup_irqs is called which unmasks all irqs. Function unmask_irq effectively re-enables lock_kicker_irq and its irq handler is invoked which reports bug and crashes Dom0.
This patch sets IRQ_PER_CPU flag in irq desc and excludes percpu IRQs from being fixed up when taking CPUs down.
Signed-off-by: Fengzhe Zhang <fengzhe.zhang@intel.com>
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 977d8b4..f0f9450 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -80,6 +80,9 @@ void fixup_irqs(void)
if (irq == 2)
continue;
+ if (desc->status & I...
2011 Jan 26
9
[PATCH]vtd: Fix for irq bind failure after PCI attaching 32 times
...v_op. Now in function pt_irq_destroy_bind_vtd, duplicated logic is added to free pirq_to_emuirq, but not pirq_to_irq. This causes do_physdev_op fail to free both emuirq and irq. After attaching a PCI device for 32 times, irq resources run out. This patch removes the redundant logic.
Signed-off-by: Fengzhe Zhang <fengzhe.zhang@intel.com>
diff -r 003acf02d416 xen/drivers/passthrough/io.c
--- a/xen/drivers/passthrough/io.c Thu Jan 20 17:04:06 2011 +0000
+++ b/xen/drivers/passthrough/io.c Wed Jan 26 23:05:33 2011 +0800
@@ -375,7 +375,6 @@
hvm_irq_dpci->mirq[machine_gsi].dom = NU...
2011 Jan 21
11
[PATCH]x86:x2apic: Disable x2apic on x86-32 permanently
...c on x86-32 permanently
x2apic initialization on x86_32 uses vcpu pointer before it is initialized. As x2apic is unlikely to be used on x86_32, this patch disables x2apic permanently on x86_32. It also asserts the sanity of vcpu pointer before dereference to prevent further misuse.
Signed-off-by: Fengzhe Zhang <fengzhe.zhang@intel.com>
diff -r 02c0af2bf280 xen/arch/x86/apic.c
--- a/xen/arch/x86/apic.c Mon Jan 17 18:05:52 2011 +0000
+++ b/xen/arch/x86/apic.c Wed Jan 19 03:24:16 2011 -0500
@@ -961,6 +961,22 @@
if ( !cpu_has_x2apic )
return;
+#ifdef __i386__
+ clear_bit(X86_FE...
2013 Mar 05
8
eDP screen corruption using linux 3.8 & xen 4.2
Konrad, et al,
I am seeing visual corruption (almost like an interlacing problem) with
i915 under Xen on some platforms using linux-3.8.
See attached file for an example of the visual corruption.
This particular platform is an HP Elitebook 2540p
The same kernel and ramdisk, when booted as native linux does not show this
corruption.
dmesg is attached, as well (out.txt) - but I did not see