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| author | Wanpeng Li <wanpengli@tencent.com> | 2018-04-26 17:55:03 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-05-11 11:21:10 +0200 |
| commit | ddc9cfb79c1096a0855839631c091aa7e9602052 (patch) | |
| tree | 4560f59a7292b1bcd4808778bb1f884be2850ee5 /mm/bootmem.c | |
| parent | 75bc37fefc4471e718ba8e651aa74673d4e0a9eb (diff) | |
KVM: Extend MAX_IRQ_ROUTES to 4096 for all archs
Our virtual machines make use of device assignment by configuring
12 NVMe disks for high I/O performance. Each NVMe device has 129
MSI-X Table entries:
Capabilities: [50] MSI-X: Enable+ Count=129 Masked-Vector table: BAR=0 offset=00002000
The windows virtual machines fail to boot since they will map the number of
MSI-table entries that the NVMe hardware reported to the bus to msi routing
table, this will exceed the 1024. This patch extends MAX_IRQ_ROUTES to 4096
for all archs, in the future this might be extended again if needed.
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim KrÄmář <rkrcmar@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Tonny Lu <tonnylu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'mm/bootmem.c')
0 files changed, 0 insertions, 0 deletions