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| author | Andrew Cooper <andrew.cooper3@citrix.com> | 2013-04-16 10:34:32 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-04-16 10:34:32 +0200 |
| commit | 53fd1d8458de01169dfb56feb315f02c2b521a86 (patch) | |
| tree | ebad11575cf7fbcd0cb6600b2e754bf0d5dd1511 /xen/drivers/passthrough | |
| parent | f03b5006f7e6e396746a56f5f563fb0f55cabc44 (diff) | |
| download | xen-53fd1d8458de01169dfb56feb315f02c2b521a86.tar.gz xen-53fd1d8458de01169dfb56feb315f02c2b521a86.tar.bz2 xen-53fd1d8458de01169dfb56feb315f02c2b521a86.zip | |
iommu/crash: Interrupt remapping is also disabled on crash
This fixes a regression side-effect caused by:
IOMMU: properly check whether interrupt remapping is enabled
git: fae0372140befb88d890a30704a8ec058c902af8
hg: 26742:e1ec14bad0cb
On the crash path in nmi_shootdown_cpus(), we shut down the IOMMU, then
disable the IOAPIC.
On systems which support interrupt remapping, the variable iommu_intremap
remains set, meaning that disable_IO_APIC() issues interrupt remapping
invalidate requests.
IOAPIC interrupt remapping used to be conditional on iommu_enabled, but is now
conditional on iommu_intremap, following the above changeset.
This behaviour can be fixed by also indicating that interrupt remapping is not
enabled after shutting down the IOMMU.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Diffstat (limited to 'xen/drivers/passthrough')
| -rw-r--r-- | xen/drivers/passthrough/iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c index c5906abd88..93ad1224de 100644 --- a/xen/drivers/passthrough/iommu.c +++ b/xen/drivers/passthrough/iommu.c @@ -603,7 +603,7 @@ void iommu_crash_shutdown(void) const struct iommu_ops *ops = iommu_get_ops(); if ( iommu_enabled ) ops->crash_shutdown(); - iommu_enabled = 0; + iommu_enabled = iommu_intremap = 0; } int iommu_do_domctl( |