> -Original Message-
> From: Peter Maydell [mailto:peter.mayd...@linaro.org]
> Sent: Saturday, November 01, 2014 1:07 AM
> To: Wangkai (Kevin,C)
> Cc: qemu-devel@nongnu.org; Lee yang
> Subject: Re: [Qemu-devel] using qemu arm bring up 2 cpus on x86, hang
> up on gues
Hi all,
I am using qemu-system-arm emulate armv7 with 2 cpus on x86_64 host, when I do
the command tar -xf xxx.tar or rm -r xxx, after a while,
Guest system hang up on file system:
When mmc request a block, that cannot receive a request done event, it seems
request done irq loss.
After I change
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
> Sent: Monday, July 28, 2014 11:53 PM
> To: Wangkai (Kevin,C)
> Cc: qemu-devel@nongnu.org; Lee yang; aligu...@amazon.com; Stefan
> Hajnoczi
> Subject: Re: [Qemu-devel] [PATCH v2] Tap:
fix vcpu long time io blocking on tap, when too many packets was delivered
to the guest os via tap interface.
--
Signed-off-by: Wangkai
diff --git a/net/tap.c b/net/tap.c
index a40f7f0..1da6d89 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -189,6 +189,7 @@ static void tap_send(void *opaque)
{
> -Original Message-
> From: Jason Wang [mailto:jasow...@redhat.com]
> Sent: Thursday, July 17, 2014 1:37 PM
> To: Wangkai (Kevin,C); Stefan Hajnoczi
> Cc: Lee yang; qemu-devel@nongnu.org; Stefan Hajnoczi;
> aligu...@amazon.com; Michael S. Tsirkin
> Subject: Re: [Qe
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
> Sent: Tuesday, July 15, 2014 11:00 PM
> To: Wangkai (Kevin,C)
> Cc: Stefan Hajnoczi; Lee yang; qemu-devel@nongnu.org;
> aligu...@amazon.com
> Subject: Re: [Qemu-devel] [PATCH] Tap: fix vcpu
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
> Sent: Tuesday, July 15, 2014 11:00 PM
> To: Wangkai (Kevin,C)
> Cc: Stefan Hajnoczi; Lee yang; qemu-devel@nongnu.org;
> aligu...@amazon.com
> Subject: Re: [Qemu-devel] [PATCH] Tap: fix vcpu
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@redhat.com]
> Sent: Monday, July 14, 2014 4:43 PM
> To: Wangkai (Kevin,C)
> Cc: qemu-devel@nongnu.org; aligu...@amazon.com; Lee yang
> Subject: Re: [PATCH] Tap: fix vcpu long time io blocking on tap
>
&
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@redhat.com]
> Sent: Friday, July 11, 2014 9:04 PM
> To: Wangkai (Kevin,C)
> Cc: qemu-devel@nongnu.org; aligu...@amazon.com; Lee yang
> Subject: Re: [PATCH] Tap: fix vcpu long time io blocking on tap
>
&
When used a tap as net driver for vm, if too many packets was delivered to the
guest os via tap interface, the guest os will be blocked on io events for a long
time, while tap driver was busying process packets.
kvm vcpu thread block on io lock call trace:
__lll_lock_wait
_L_lock_1004
__pth
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