89 lines
3.0 KiB
Diff
89 lines
3.0 KiB
Diff
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From 2ae7aa73308d911fa9916d6ec03e2a52a16f7737 Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Mon, 25 Jul 2011 10:45:13 +0100
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Subject: [PATCH] Fix qemu -machine option for latest qemu (thanks Markus
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Armbruster).
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---
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src/launch.c | 25 +++++++++++++++----------
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1 files changed, 15 insertions(+), 10 deletions(-)
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diff --git a/src/launch.c b/src/launch.c
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index 56aa288..933e3fd 100644
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--- a/src/launch.c
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+++ b/src/launch.c
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@@ -75,10 +75,10 @@ static int launch_appliance (guestfs_h *g);
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static int64_t timeval_diff (const struct timeval *x, const struct timeval *y);
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static int connect_unix_socket (guestfs_h *g, const char *sock);
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static int qemu_supports (guestfs_h *g, const char *option);
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-
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-#if 0
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static int qemu_supports_re (guestfs_h *g, const pcre *option_regex);
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+static pcre *re_machine_name;
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+
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static void compile_regexps (void) __attribute__((constructor));
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static void free_regexps (void) __attribute__((destructor));
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@@ -96,13 +96,15 @@ compile_regexps (void)
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abort (); \
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} \
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} while (0)
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+
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+ COMPILE (re_machine_name, "-machine .*\\bname\\b", 0);
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}
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static void
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free_regexps (void)
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{
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+ pcre_free (re_machine_name);
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}
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-#endif
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/* Add a string to the current command line. */
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static void
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@@ -516,14 +518,19 @@ launch_appliance (guestfs_h *g)
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if (qemu_supports (g, "-nodefconfig"))
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add_cmdline (g, "-nodefconfig");
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- /* The qemu -machine option (added 2010-12) is a bit more sane
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- * since it falls back through various different acceleration
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- * modes, so try that first (thanks Markus Armbruster).
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+ /* The qemu -machine option (added 2010-12) falls back through
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+ * various different acceleration modes, so try that first (thanks
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+ * Markus Armbruster). However in qemu commit 9052ea6bf4962b13
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+ * the syntax was changed, so we have to detect that.
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*/
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- if (qemu_supports (g, "-machine")) {
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+ if (qemu_supports_re (g, re_machine_name)) { /* after 2011-07-23 */
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+ add_cmdline (g, "-machine");
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+ add_cmdline (g, "pc,accel=kvm:tcg");
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+ }
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+ else if (qemu_supports (g, "-machine")) { /* after 2010-12 */
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add_cmdline (g, "-machine");
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add_cmdline (g, "accel=kvm:tcg");
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- } else {
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+ } else { /* no -machine option */
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/* qemu sometimes needs this option to enable hardware
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* virtualization, but some versions of 'qemu-kvm' will use KVM
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* regardless (even where this option appears in the help text).
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@@ -1159,7 +1166,6 @@ qemu_supports (guestfs_h *g, const char *option)
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return strstr (g->qemu_help, option) != NULL;
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}
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-#if 0
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/* As above but using a regex instead of a fixed string. */
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static int
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qemu_supports_re (guestfs_h *g, const pcre *option_regex)
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@@ -1171,7 +1177,6 @@ qemu_supports_re (guestfs_h *g, const pcre *option_regex)
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return match (g, g->qemu_help, option_regex);
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}
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-#endif
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/* Check if a file can be opened. */
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static int
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--
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1.7.5.2
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