Conghui Chen c246d1c9b8 hv: xsave: bugfix for init value ...

The init value for XCR0 and XSS should be the same with spec:
In SDM Vol1 13.3:
XCR0[0] is associated with x87 state (see Section 13.5.1). XCR0[0] is
always 1. The other bits in XCR0 are all 0 coming out of RESET.
The IA32_XSS MSR (with MSR index DA0H) is zero coming out of RESET.

The previous code try to fix the xsave area leak to other VMs during init
phase, but bring the error to linux. Besides, it cannot avoid the
possible leak in running phase. Need find a better solution.

Tracked-On: #4430
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

2020-02-28 09:19:29 +08:00

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