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authorSatoru Moriya <satoru.moriya@hds.com>2013-04-19 16:42:06 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2013-04-22 08:52:23 -0500
commit888a6bc63c94ef34026399117ebf6a1fa0e7a29a (patch)
tree9a7eaa7b65500baf6099eb9118c92aa220c3b4f1 /qemu-options.hx
parent2b316774f60291f57ca9ecb6a9f0712c532cae34 (diff)
downloadqemu-arm-888a6bc63c94ef34026399117ebf6a1fa0e7a29a.tar.gz
Add option to mlock qemu and guest memory
In certain scenario, latency induced by paging is significant and memory locking is needed. Also, in the scenario with untrusted guests, latency improvement due to mlock is desired. This patch introduces a following new option to mlock guest and qemu memory: -realtime mlock=on|off Signed-off-by: Satoru Moriya <satoru.moriya@hds.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1366382526-26146-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qemu-options.hx')
-rw-r--r--qemu-options.hx13
1 files changed, 13 insertions, 0 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index 5c115d1cf9..e86cc2439d 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2583,6 +2583,19 @@ STEXI
Do not start CPU at startup (you must type 'c' in the monitor).
ETEXI
+DEF("realtime", HAS_ARG, QEMU_OPTION_realtime,
+ "-realtime [mlock=on|off]\n"
+ " run qemu with realtime features\n"
+ " mlock=on|off controls mlock support (default: on)\n",
+ QEMU_ARCH_ALL)
+STEXI
+@item -realtime mlock=on|off
+@findex -realtime
+Run qemu with realtime features.
+mlocking qemu and guest memory can be enabled via @option{mlock=on}
+(enabled by default).
+ETEXI
+
DEF("gdb", HAS_ARG, QEMU_OPTION_gdb, \
"-gdb dev wait for gdb connection on 'dev'\n", QEMU_ARCH_ALL)
STEXI