eeeeaf88a6
xend-devid-or-name.patch - Upstream patches from Jan 22019-x86-cpuidle-online-check.patch 22051-x86-forced-EOI.patch 22067-x86-irq-domain.patch 22068-vtd-irte-RH-bit.patch 22071-ept-get-entry-lock.patch 22084-x86-xsave-off.patch - bnc#638465 - hypervisor panic in memory handling heaplock.patch - Update to Xen 4.0.1. This is a bug fix release. OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=73
31 lines
1.0 KiB
Diff
31 lines
1.0 KiB
Diff
# HG changeset patch
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# User Keir Fraser <keir.fraser@citrix.com>
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# Date 1282069957 -3600
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# Node ID 5218db847b58a151d8f320b7141efc984f759b35
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# Parent 542e8cd16a6cf036e89b597ba6343245fcaafa25
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x86 cpuidle: check whether cpu is online in cpu idle control
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We observed a 2.6.18.8 dom0 kernel crash when Xen has maxcpus < num
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of physical cores (maxcpus=3D4 for a 12-core system). It appeared that
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hypervisor doesn't check whether CPU is online or not. This small
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patch fixed the issue.
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Signed-off-by: Uwe Dannowski <uwe.dannowski@amd.com>
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Acked-by: Wei Huang <wei.huang2@amd.com>
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--- a/xen/arch/x86/acpi/cpuidle_menu.c
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+++ b/xen/arch/x86/acpi/cpuidle_menu.c
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@@ -270,9 +270,10 @@ static void menu_reflect(struct acpi_pro
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static int menu_enable_device(struct acpi_processor_power *power)
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{
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- struct menu_device *data = &per_cpu(menu_devices, power->cpu);
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+ if (!cpu_online(power->cpu))
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+ return -1;
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- memset(data, 0, sizeof(struct menu_device));
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+ memset(&per_cpu(menu_devices, power->cpu), 0, sizeof(struct menu_device));
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return 0;
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}
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