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fix for MOV to CR3 in long mode with PCID enabled - patch by Kent Williams

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Stanislav Shwartsman 2017-12-25 19:49:45 +00:00
parent d5e2fbed00
commit 27a7925810
1 changed files with 6 additions and 1 deletions
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7
bochs/cpu/crregs.cc
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@ -705,7 +705,12 @@ BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::MOV_CR3Rq(bxInstruction_c *i)
}
#endif
// no PDPTR checks in long mode
// allow bit 63 (hint that TLB doesn't need to be cleared) to be set when
// PCIDE is set, but ignore the hint if given
if (BX_CPU_THIS_PTR cr4.get_PCIDE()) {
val_64 &= ~(BX_CONST64(1)<<63);
}
if (! SetCR3(val_64))
exception(BX_GP_EXCEPTION, 0);