Hi Peter: I want to trap some ldr,str instruction in guest VM for debug. Therefore, I have to emulate guest ldr,str in host. Without guest VA to host VA, I cannot emulate ldr,str instruction in host.
Thank you -Jack -------- 原始郵件 -------- 寄件者：Peter Maydell <[email protected]> 傳送日期：Fri, 15 Jan 2016 18:02:23 +0800 收件者：[email protected] 副本：[email protected] 主旨:Re: ARM KVM guest virtual address to host virtual address Look up >On 15 January 2016 at 09:33, <[email protected]> wrote: >> How to lookup host virtual address by guest virtual address ? >> Is there any function to do guest page table walk? > >There is no single function to do this (depending on what >bit of QEMU this is, we might either try a TLB access to >see if we can get guest-virtual to host-virtual, with a >slow-path fallback for TLB misses, or we might do guest >virtual to guest physical and then look up whether that >is RAM or a device and behave accordingly). What are you >actually trying to do? > >thanks >-- PMM
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