From: Andrea Bolognani <abologna@redhat.com>
Date: Tue, 6 Mar 2018 12:43:26 +0000 (+0100)
Subject: qemu: Ignore subsequent attempts to probe device properties
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=f3699636acd51956b0f68e0686ab779dec73af34;p=libvirt.git

qemu: Ignore subsequent attempts to probe device properties

In some cases, we are probing multiple devices for the same
property and setting the corresponding capability if it's
found on any of the devices: when that happens, we can quit
early after finding the first property and avoiding a bunch
of string comparisons.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
---

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 4dec0046df..853e8cefcf 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -1978,6 +1978,9 @@ virQEMUCapsProcessStringFlags(virQEMUCapsPtr qemuCaps,
 {
     size_t i, j;
     for (i = 0; i < nflags; i++) {
+        if (virQEMUCapsGet(qemuCaps, flags[i].flag))
+            continue;
+
         for (j = 0; j < nvalues; j++) {
             if (STREQ(values[j], flags[i].value)) {
                 virQEMUCapsSet(qemuCaps, flags[i].flag);