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author | Wanpeng Li | 2018-04-27 02:55:03 +0200 |
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committer | Paolo Bonzini | 2018-05-11 11:21:10 +0200 |
commit | ddc9cfb79c1096a0855839631c091aa7e9602052 (patch) | |
tree | 4560f59a7292b1bcd4808778bb1f884be2850ee5 /arch/x86/kvm/hyperv.c | |
parent | Linux 4.17-rc4 (diff) | |
download | kernel-qcow2-linux-ddc9cfb79c1096a0855839631c091aa7e9602052.tar.gz kernel-qcow2-linux-ddc9cfb79c1096a0855839631c091aa7e9602052.tar.xz kernel-qcow2-linux-ddc9cfb79c1096a0855839631c091aa7e9602052.zip |
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 'arch/x86/kvm/hyperv.c')
0 files changed, 0 insertions, 0 deletions