From: Sheng Yang <sheng@linux.intel.com>
Date: Thu, 21 May 2009 05:50:13 +0000 (+0800)
Subject: KVM: Downsize max support MSI-X entry to 256
X-Git-Tag: firefly_0821_release~12973^2~185
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=e7333391403b31feb27a05bc0dcd052a471f1276;p=firefly-linux-kernel-4.4.55.git

KVM: Downsize max support MSI-X entry to 256

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>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 65df6f5e2b98..632a8560dbcf 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -676,7 +676,7 @@ 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;