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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-11-27 08:05:18 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-11-27 08:05:18 +0000 |
| commit | d210b9fc623cdd4963c93707eba0eb7dac198101 (patch) | |
| tree | 9c8db760588ade9c0eeb765a18aa79a728c37e9c /xen/arch/x86/msi.c | |
| parent | dd14c75ad4f3517f742a25ee8e778a3cbcf8fadc (diff) | |
| download | xen-d210b9fc623cdd4963c93707eba0eb7dac198101.tar.gz xen-d210b9fc623cdd4963c93707eba0eb7dac198101.tar.bz2 xen-d210b9fc623cdd4963c93707eba0eb7dac198101.zip | |
VT-d: Free unused interrupt remapping table entry
This patch changes the IRTE allocation method, and frees unused
IRTE when device is de-assigned.
Signed-Off-By: Zhai Edwin <edwin.zhai@intel.com>
Diffstat (limited to 'xen/arch/x86/msi.c')
| -rw-r--r-- | xen/arch/x86/msi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/xen/arch/x86/msi.c b/xen/arch/x86/msi.c index 261da58185..fedac7f7aa 100644 --- a/xen/arch/x86/msi.c +++ b/xen/arch/x86/msi.c @@ -438,6 +438,11 @@ int msi_free_irq(struct msi_desc *entry) start = (unsigned long)entry->mask_base & ~(PAGE_SIZE - 1); msix_put_fixmap(entry->dev, virt_to_fix(start)); } + + /* Free the unused IRTE if intr remap enabled */ + if ( iommu_enabled ) + iommu_update_ire_from_msi(entry, NULL); + list_del(&entry->list); xfree(entry); return 0; |