]> Git Repo - qemu.git/commit - kvm-all.c
projects / qemu.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 0fbc207) | patch
kvm: skip system call when msi route is unchanged
authorMichael S. Tsirkin <[email protected]>
Tue, 4 Jun 2013 11:52:35 +0000 (14:52 +0300)
committerPaolo Bonzini <[email protected]>
Wed, 3 Jul 2013 08:38:20 +0000 (10:38 +0200)
commit40509f7f52672fe41c2cce895e187352fc09f53a
treee031437f9c3136e81c1656f613162aecc66e9c2dtree | snapshot
parent0fbc20740342713f282b118b4a446c4c43df3f4acommit | diff
kvm: skip system call when msi route is unchanged

Some guests do a large number of mask/unmask
calls which currently trigger expensive route update
system calls.
Detect that route in unchanged and skip the system call.

Reported-by: "Zhanghaoyu (A)" <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Gleb Natapov <[email protected]>
kvm-all.c diff | blob | blame | history
Empty description
This page took 0.025416 seconds and 4 git commands to generate.