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[Qemu-devel] [RFC] darwin: work around sigfd
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [RFC] darwin: work around sigfd |
Date: |
Thu, 5 May 2011 11:36:26 +0200 |
When running qemu-system on Darwin, the vcpu processes guest code, but
I don't get to see anything on the cocoa screen.
When running a guest with -nographic, time stands still for the guest:
[ 0.000000] Detected 2659.508 MHz processor.
[ 0.000756] Calibrating delay loop (skipped), value calculated using timer
frequency.. 5319.01 BogoMIPS (lpj=2659508)
[ 0.000999] pid_max: default: 32768 minimum: 301
[ 0.000999] Security Framework initialized
[ 0.000999] AppArmor: AppArmor initialized
[...]
[ 0.000999] Kernel panic - not syncing: IO-APIC + timer doesn't work! Boot
with apic=debug and send a report. Then try booting with the 'noapic' option.
[ 0.000999]
[...]
[ 0.000999] [<ffffffff81b3ec92>] kernel_init+0x8f/0x206
[ 0.000999] [<ffffffff81003d74>] kernel_thread_helper+0x4/0x10
This patch makes qemu-system work again on Darwin, but is obviously
just a hack. I'd really like to see some more clever people find out
what exactly is going wrong to find a real solution!
Reported-by: Andreas Färber <address@hidden>
(no signed-off-by on purpose - it's an RFC!)
---
cpus.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/cpus.c b/cpus.c
index 1fc34b7..ef604bf 100644
--- a/cpus.c
+++ b/cpus.c
@@ -388,6 +388,15 @@ static int qemu_signal_init(void)
int sigfd;
sigset_t set;
+#ifdef CONFIG_DARWIN
+ /* Darwin breaks for me with sigfd. I don't know why, but it just sits
+ there hanging. The vcpu does process things, so that one's good, but
+ there is no output. Doing the same as win32 works for me. */
+ if (1) {
+ return 0;
+ }
+#endif
+
#ifdef CONFIG_IOTHREAD
/* SIGUSR2 used by posix-aio-compat.c */
sigemptyset(&set);
--
1.7.1
- [Qemu-devel] [RFC] darwin: work around sigfd,
Alexander Graf <=