KVM: Extend MAX_IRQ_ROUTES to 4096 for all archs
[ Upstream commit ddc9cfb79c
]
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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
parent
29475c404b
commit
ce44a4d5db
|
@ -1044,13 +1044,7 @@ static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
|
|||
|
||||
#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
|
||||
|
||||
#ifdef CONFIG_S390
|
||||
#define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that...
|
||||
#elif defined(CONFIG_ARM64)
|
||||
#define KVM_MAX_IRQ_ROUTES 4096
|
||||
#else
|
||||
#define KVM_MAX_IRQ_ROUTES 1024
|
||||
#endif
|
||||
#define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */
|
||||
|
||||
bool kvm_arch_can_set_irq_routing(struct kvm *kvm);
|
||||
int kvm_set_irq_routing(struct kvm *kvm,
|
||||
|
|
Loading…
Reference in New Issue