[lkml]   [2018]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] KVM: X86: Fix SMRAM accessing even if VM is shutdown
2018-02-09 20:42 GMT+08:00 Paolo Bonzini <>:
> On 09/02/2018 04:22, Xiao Guangrong wrote:
>> That is a good question... :)
>> This case (with KVM_MEMSLOT_INVALID is set) can be easily constructed,
>> userspace should avoid this case by itself (avoiding vCPU accessing the
>> memslot which is being updated). If it happens, it's a operation issue
>> rather than INTERNAL ERROR.
>> Maybe treat it as MMIO accessing and return to userspace with MMIO_EXIT
>> is a better solution...
> Yeah, that's what emulation would do (except if it's an instruction
> fetch, which will cause emulation to fail). I think it's a bug in the

After patch v2, I found that instruction fetch causes emulation to

Wanpeng Li

 \ /
  Last update: 2018-02-11 11:58    [W:0.055 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site