CVS commit: src/sys

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Sun Jan 20 16:55:21 UTC 2019

Modified Files:
        src/sys/arch/x86/include: fpu.h
        src/sys/arch/x86/x86: fpu.c
        src/sys/dev/nvmm/x86: nvmm_x86_svm.c

Log Message:
Improvements in NVMM

 * Handle the FPU differently, limit the states via the given mask rather
   than via XCR0. Align to 64 bytes. Provide an initial gXCR0, to be sure
   that XCR0_X87 is set. Reset XSTATE_BV when the state is modified by
   the virtualizer, to force a reload from memory.

 * Hide RDTSCP.

 * Zero-extend RBX/RCX/RDX when handling the NVMM CPUID signature.

 * Take ECX and not RCX on MSR instructions.


To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/sys/arch/x86/include/fpu.h
cvs rdiff -u -r1.48 -r1.49 src/sys/arch/x86/x86/fpu.c
cvs rdiff -u -r1.15 -r1.16 src/sys/dev/nvmm/x86/nvmm_x86_svm.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.