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- Fixed TLB flush on CR3 change - flush all pages is CR4.PGE is OFF

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This commit is contained in:
Stanislav Shwartsman 2008-08-16 15:35:35 +00:00
parent f275eb3e86
commit e2fa98b629
2 changed files with 8 additions and 5 deletions
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4
bochs/cpu/cpu.h
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: cpu.h,v 1.508 2008-08-13 21:51:53 sshwarts Exp $
// $Id: cpu.h,v 1.509 2008-08-16 15:35:35 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
@ -2996,8 +2996,6 @@ public: // for now...
#if BX_SUPPORT_GLOBAL_PAGES
BX_SMF void TLB_flushNonGlobal(void);
#else
#define TLB_flushNonGlobal() TLB_flush()
#endif
BX_SMF void TLB_flush(void);
BX_SMF void TLB_invlpg(bx_address laddr);

7
bochs/cpu/paging.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: paging.cc,v 1.153 2008-08-15 14:30:50 sshwarts Exp $
// $Id: paging.cc,v 1.154 2008-08-16 15:35:35 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
@ -427,7 +427,12 @@ BX_CPU_C::pagingCR4Changed(Bit32u oldCR4, Bit32u newCR4)
BX_CPU_C::SetCR3(bx_address val)
{
// flush TLB even if value does not change
#if BX_SUPPORT_GLOBAL_PAGES
if (BX_CPU_THIS_PTR cr4.get_PGE())
TLB_flushNonGlobal(); // Don't flush Global entries.
else
#endif
TLB_flush(); // Flush Global entries also.
#if BX_SUPPORT_PAE
if (BX_CPU_THIS_PTR cr4.get_PAE() && !long_mode()) {