acrn-hypervisor/hypervisor/arch
Yin Fengwei d958d31e1b hv: fix the issue of movs emulation
The current movs emulation has issues:
1. it use gva to get/put data.
2. it only support src and dst operand are memory which does not
   apply to our case (one of them should be mmio and triggers
   EPT voilation).

This patch fix the issue by:
1. convert the address from gva to hva before access it.
2. handle mmio emulation.

Also fix the issue introduced by previous instruction reshuffle
patchset:
1. the desc validation should be only applied to none-64bit mode.
2. gva2gpa should be given correct guest virtual address.

Specailly for movs, we cache the dst gpa if the check during
movs decoding success. And use it directly during movs
emulation.

Tracked-On: #1207
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Tested-by: Qi Yadong <yadog.qi@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-09-13 09:21:59 +08:00
..
x86 hv: fix the issue of movs emulation 2018-09-13 09:21:59 +08:00