* [Qemu-devel] restore pc in cpu_exec_nocache()
[not found] <830ad22a738fa299736a7307b139f7d2@g.corp-email.com>
@ 2013-12-01 8:42 ` wangxd
2013-12-01 16:52 ` Peter Maydell
0 siblings, 1 reply; 2+ messages in thread
From: wangxd @ 2013-12-01 8:42 UTC (permalink / raw)
To: qemu-devel
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Hello all ：
I am wondering to know why we must call cpu_pc_from_tb() in the function cpu_exec_nocache() . I found the function cpu_exec_nocache() with comments :“Restore PC. This may happen if async event occurs before the TB starts executing." But I don't know what would happen if async event occurs.
Thanks a los.
王旭东
Email: wangxd@inspur.com
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] restore pc in cpu_exec_nocache()
2013-12-01 8:42 ` [Qemu-devel] restore pc in cpu_exec_nocache() wangxd
@ 2013-12-01 16:52 ` Peter Maydell
0 siblings, 0 replies; 2+ messages in thread
From: Peter Maydell @ 2013-12-01 16:52 UTC (permalink / raw)
To: wangxd; +Cc: qemu-devel
On 1 December 2013 08:42, wangxd <wangxd@inspur.com> wrote:
> Hello all ：
> I am wondering to know why we must call cpu_pc_from_tb() in the function
> cpu_exec_nocache() . I found the function cpu_exec_nocache() with comments
> :“Restore PC. This may happen if async event occurs before the TB starts
> executing." But I don't know what would happen if async event occurs.
Current QEMU source code doesn't have such a function call. You might
like to look at the current source code first, which may make it clearer
what it is doing.
thanks
-- PMM
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-12-01 8:42 ` [Qemu-devel] restore pc in cpu_exec_nocache() wangxd
2013-12-01 16:52 ` Peter Maydell
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