[Bug 1855617] Re: savevm with hax saves wrong register state

[Thomas Huth]

This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:

 https://gitlab.com/qemu-project/qemu/-/issues/188


** Changed in: qemu
       Status: New => Expired

** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #188
   https://gitlab.com/qemu-project/qemu/-/issues/188

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https://bugs.launchpad.net/bugs/1855617

Title:
  savevm with hax saves wrong register state

Status in QEMU:
  Expired

Bug description:
  I use qemu-i386 with IntelHaxm on Windows 10 x64 host with Windows 7 x86 
guest. I run the guest till OS loads and create a snapshot with savevm, then 
close qemu, run it again and try to load the snapshot with loadvm. The guest 
crashes or freezes. I dumped registers on snapshot creation and loading (in 
Haxm) and found that they are different.
  When returning from Haxm in hax_vcpu_hax_exec, there is no regular register 
read. I found hax_arch_get_registers function which reads registers from Haxm 
and is called from a synchronization procedure. I placed a breakpoint on it, 
ran qemu and found that it is hit one time during guest OS boot. Exactly these 
registers where saved in the snapshot.

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