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[Qemu-devel] [RFC PATCH] vl: only display available accelerators
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-devel] [RFC PATCH] vl: only display available accelerators |
Date: |
Mon, 30 Oct 2017 01:00:56 -0300 |
examples configuring with '--enable-kvm --disable-tcg'
- before
$ qemu-system-x86_64 -accel help
Possible accelerators: kvm, xen, hax, tcg
$ qemu-system-x86_64 -accel tcg
qemu-system-x86_64: -machine accel=tcg: No accelerator found
# qemu-system-x86_64 -accel hax
qemu-system-x86_64: -machine accel=hax: No accelerator found
# qemu-system-x86_64 -accel xen
xencall: error: Could not obtain handle on privileged command interface: No
such file or directory
xen be core: xen be core: can't open xen interface
can't open xen interface
qemu-system-x86_64: failed to initialize Xen: Operation not permitted
- after
$ qemu-system-x86_64 -accel help
Possible accelerators: kvm
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
RFC because:
- I don't think this is the nicest way, too much #ifdef'fery in main()
- I'm not sure the correct use of CONFIG_KVM_IS_POSSIBLE
- shouldn't CONFIG_XEN/CONFIG_HAX be as poisoned as CONFIG_KVM?
vl.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/vl.c b/vl.c
index ec299099ff..13fce86a6e 100644
--- a/vl.c
+++ b/vl.c
@@ -3883,7 +3883,20 @@ int main(int argc, char **argv, char **envp)
optarg, true);
optarg = qemu_opt_get(accel_opts, "accel");
if (!optarg || is_help_option(optarg)) {
- error_printf("Possible accelerators: kvm, xen, hax,
tcg\n");
+ error_printf("Possible accelerators: ");
+#ifdef CONFIG_KVM_IS_POSSIBLE
+ error_printf("kvm ");
+#endif
+#ifdef CONFIG_XEN
+ error_printf("xen ");
+#endif
+#ifdef CONFIG_HAX
+ error_printf("hax ");
+#endif
+#ifdef CONFIG_TCG
+ error_printf("tcg ");
+#endif
+ error_printf("\n");
exit(0);
}
opts = qemu_opts_create(qemu_find_opts("machine"), NULL,
--
2.15.0.rc2
- [Qemu-devel] [RFC PATCH] vl: only display available accelerators,
Philippe Mathieu-Daudé <=