* [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 [-- Attachment #1: Type: text/plain, Size: 366 bytes --] 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 [-- Attachment #2: Type: text/html, Size: 1437 bytes --] ^ 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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