Re: [PATCH v2 9/9] KVM: vmx: vmx instructions handling does not consider cs.l

From: Paolo Bonzini
Date: Wed Jun 18 2014 - 12:53:09 EST


Il 18/06/2014 18:01, Nadav Amit ha scritto:


Perhaps I am missing something, but I don't see where my mistake is.
The VMREAD source operand is always read as 64-bits and I made no
changes there. Therefore, if bits 63:32 are not zero, the instruction
should fail when attempting to access the field.

In 32-bit mode, it should be read as 32 bits: "Outside IA-32e mode, the source operand has 32 bits, regardless of the value of CS.D" (so it's never 16 bits, but it's also never 64 bits).

Paolo
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