diff options
| author | Peter Xu <peterx@redhat.com> | 2016-07-14 13:56:23 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-07-21 20:43:49 +0300 |
| commit | cb135f59b8059c3a372652377ef92fa4a49ad550 (patch) | |
| tree | 244cb6772ba2773c137cc781d96375083f381d89 /include/hw/i386/apic-msidef.h | |
| parent | 09cd058a2cf77bb7a3b10ff93c1f80ed88bca364 (diff) | |
q35: ioapic: add support for emulated IOAPIC IR
This patch translates all IOAPIC interrupts into MSI ones. One pseudo
ioapic address space is added to transfer the MSI message. By default,
it will be system memory address space. When IR is enabled, it will be
IOMMU address space.
Currently, only emulated IOAPIC is supported.
Idea suggested by Jan Kiszka and Rita Sinha in the following patch:
https://lists.gnu.org/archive/html/qemu-devel/2016-03/msg01933.html
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/i386/apic-msidef.h')
| -rw-r--r-- | include/hw/i386/apic-msidef.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/i386/apic-msidef.h b/include/hw/i386/apic-msidef.h index 6e2eb71f2f..8b4d4cca55 100644 --- a/include/hw/i386/apic-msidef.h +++ b/include/hw/i386/apic-msidef.h @@ -25,6 +25,7 @@ #define MSI_ADDR_REDIRECTION_SHIFT 3 #define MSI_ADDR_DEST_ID_SHIFT 12 +#define MSI_ADDR_DEST_IDX_SHIFT 4 #define MSI_ADDR_DEST_ID_MASK 0x00ffff0 #endif /* HW_APIC_MSIDEF_H */ |