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[V2,1/3] i386/msi: Correct mask of destination ID in MSI address

Message ID 1502311882-11038-2-git-send-email-tianyu.lan@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

lan,Tianyu Aug. 9, 2017, 8:51 p.m. UTC 
From: Chao Gao <chao.gao@intel.com>

According to SDM 10.11.1, only [19:12] bits of MSI address are
Destination ID, change the mask to avoid ambiguity for VT-d spec
has used the bit 4 to indicate a remappable interrupt request.

Signed-off-by: Chao Gao <chao.gao@intel.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
---
 include/hw/i386/apic-msidef.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/include/hw/i386/apic-msidef.h b/include/hw/i386/apic-msidef.h
index 8b4d4cc..420b411 100644
--- a/include/hw/i386/apic-msidef.h
+++ b/include/hw/i386/apic-msidef.h
@@ -26,6 +26,6 @@ 
 
 #define MSI_ADDR_DEST_ID_SHIFT          12
 #define MSI_ADDR_DEST_IDX_SHIFT         4
-#define  MSI_ADDR_DEST_ID_MASK          0x00ffff0
+#define  MSI_ADDR_DEST_ID_MASK          0x000ff000
 
 #endif /* HW_APIC_MSIDEF_H */