57123e612c
bridge-bonding.diff - Upstream patches from Jan 24950-gnttab-copy-mapped.patch 24970-x86-cpuidle-deny-port-access.patch 24996-x86-cpuidle-array-overrun.patch 25041-tapdisk2-create-init-name.patch OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=176
33 lines
1.0 KiB
Diff
33 lines
1.0 KiB
Diff
# HG changeset patch
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# User Jan Beulich <jbeulich@suse.com>
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# Date 1331048501 -3600
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# Node ID 33980e36597b9f780ef515210863034b5e3080bf
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# Parent fb70e48ee3c2ea7060a97d9ddaa6dfc864f1efc0
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x86/cpuidle: deny access to the I/O port used for EM_SYSIO
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Nothing, not even Dom0, should fiddle with this.
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Signed-off-by: Jan Beulich <jbeulich@suse.com>
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Acked-by: Keir Fraser <keir@xen.org>
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--- a/xen/arch/x86/acpi/cpu_idle.c
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+++ b/xen/arch/x86/acpi/cpu_idle.c
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@@ -44,6 +44,7 @@
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#include <xen/sched-if.h>
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#include <asm/cache.h>
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#include <asm/io.h>
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+#include <asm/iocap.h>
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#include <asm/hpet.h>
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#include <asm/processor.h>
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#include <xen/pmstat.h>
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@@ -885,6 +886,9 @@ static void set_cx(
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cx->entry_method = ACPI_CSTATE_EM_HALT;
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break;
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case ACPI_ADR_SPACE_SYSTEM_IO:
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+ if ( ioports_deny_access(dom0, cx->address, cx->address) )
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+ printk(XENLOG_WARNING "Could not deny access to port %04x\n",
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+ cx->address);
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cx->entry_method = ACPI_CSTATE_EM_SYSIO;
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break;
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default:
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