[Xen-devel] [PATCH v2 0/4] x86/HVM: misc descriptor table access exiting related fixes

["Jan Beulich" <JBeulich@xxxxxxxx>]

Patch 2 brings recently added code in line with what we did switch
other code to during this dev cycle. Patch 3 is at least a latent bug fix.
Patch 4 is merely improving debuggability, so other than the first two
I'm not sure it qualifies for 4.9.

This is all fallout from re-basing my UMIP emulation patch over
d0a699a389 ("x86/monitor: add support for descriptor access events").

1: x86emul: always fill x86_insn_modrm()'s outputs
2: x86/HVM: restrict emulation in hvm_descriptor_access_intercept()
3: VMX: don't blindly enable descriptor table exiting control
4: x86/HVM: don't uniformly report "MMIO" for various forms of failed emulation

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
---
v2: New prereq patch 1. Patch 3 almost entirely reworked.


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