* [PATCH] KVM: Downsize max support MSI-X entry to 256
@ 2009-05-21 5:50 Sheng Yang
2009-05-26 11:41 ` Avi Kivity
0 siblings, 1 reply; 2+ messages in thread
From: Sheng Yang @ 2009-05-21 5:50 UTC (permalink / raw)
To: Avi Kivity; +Cc: kvm, Sheng Yang
We only trap one page for MSI-X entry now, so it's 4k/(128/8) = 256 entries at
most.
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
include/linux/kvm.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 3db5d8d..533e864 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -633,7 +633,7 @@ struct kvm_assigned_msix_nr {
__u16 padding;
};
-#define KVM_MAX_MSIX_PER_DEV 512
+#define KVM_MAX_MSIX_PER_DEV 256
struct kvm_assigned_msix_entry {
__u32 assigned_dev_id;
__u32 gsi;
--
1.5.4.5
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] KVM: Downsize max support MSI-X entry to 256
2009-05-21 5:50 [PATCH] KVM: Downsize max support MSI-X entry to 256 Sheng Yang
@ 2009-05-26 11:41 ` Avi Kivity
0 siblings, 0 replies; 2+ messages in thread
From: Avi Kivity @ 2009-05-26 11:41 UTC (permalink / raw)
To: Sheng Yang; +Cc: kvm
Sheng Yang wrote:
> We only trap one page for MSI-X entry now, so it's 4k/(128/8) = 256 entries at
> most.
>
>
Applied, thanks.
>
> -#define KVM_MAX_MSIX_PER_DEV 512
> +#define KVM_MAX_MSIX_PER_DEV 256
> struct kvm_assigned_msix_entry {
> __u32 assigned_dev_id;
> __u32 gsi;
>
It's really unfortunate that this is a compile-time constant instead of
run-time discoverable.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-05-21 5:50 [PATCH] KVM: Downsize max support MSI-X entry to 256 Sheng Yang
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