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update CHANGES. added BX_INFO prints related to Perfmon usage

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This commit is contained in:
Stanislav Shwartsman 2014-10-15 19:04:28 +00:00
parent 6252632e31
commit 54a009ccf9
3 changed files with 51 additions and 0 deletions
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38
bochs/CHANGES
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@ -1,3 +1,41 @@
Changes in 2.6.7 (not yet released):
- CPU / CPUDB
- Implemented AVX-512BW/AVX-512DQ/AVX-512VL extensions emulation.
- implemented AVX512-IFMA532 instructions emulation.
- implemented AVX512-VBMI instructions emulation.
- Bugfixes for CPU emulation correctness (critical fixes for AVX-512, CMPXCHG16B and VMX)
- Fixed Bochs segmentation fault crash with Handlers Chaining Speedups enabled when
compiling with gcc, especially with low optimization levels.
- Reverted removal of reporting Architectural Perfmon support in pre-defined CPUID modules.
Windows 8 and Windows 10 require Performance Monitoring to be reported to boot.
To workaround possible Windows 7 64-bit installation issues: use bx_generic CPUID module,
which doesn't report Performance Monitoring in CPUID.
- GUI and display libraries
- Added native SDL2 GUI support to Bochs. To enable configure with --with-sdl2.
- Added new user shortcut "scrlck" (SDL/SDL2 using "Scroll Lock" for fullscreen toggle).
- Write enhanced gui debugger settings to file on exit and restore on initialization.
- I/O Devices
- USB
- Updated xHCI model to match the latest spec version 1.10 (patch by Ben Lunt)
- Added USB port specific option 'size' for VVFAT disks (range 128M ... 128G).
If the size is not specified or invalid, it defaults to 504M.
- Hard drive / HD image
- Fixed crash when using a "fixed" type VPC image.
- ROM BIOS
- Fixed int74_function() for 4-byte (wheel mouse) packets.
- LGPL'd VGABIOS updated from CVS (fixed building VBE modes list)
- Misc
- Visual Studio workspace files updated to VS2013Ex format.
- Documentation fixes and updates.
- bximage/bxcommit: removed old obsolete versions of bximage and bxcommit tools.
-------------------------------------------------------------------------
Changes in 2.6.6 (June 15, 2014):
- CPU / CPUDB

2
bochs/cpu/generic_cpuid.cc
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@ -349,6 +349,8 @@ void bx_generic_cpuid_t::get_std_cpuid_leaf_A(cpuid_function_t *leaf) const
leaf->ebx = 0;
leaf->ecx = 0;
leaf->edx = 0;
BX_INFO(("WARNING: Architectural Performance Monitoring is not implemented"));
}
BX_CPP_INLINE static Bit32u ilog2(Bit32u x)

11
bochs/cpu/msr.cc
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@ -493,6 +493,17 @@ bx_bool BX_CPP_AttrRegparmN(2) BX_CPU_C::wrmsr(Bit32u index, Bit64u val_64)
switch(index) {
case BX_MSR_PERFEVTSEL0:
case BX_MSR_PERFEVTSEL1:
case BX_MSR_PERFEVTSEL2:
case BX_MSR_PERFEVTSEL3:
case BX_MSR_PERFEVTSEL4:
case BX_MSR_PERFEVTSEL5:
case BX_MSR_PERFEVTSEL6:
case BX_MSR_PERFEVTSEL7:
BX_INFO(("WRMSR: write into IA32_PERFEVTSEL%d MSR: %08x:%08x", index - BX_MSR_PERFEVTSEL0, val32_hi, val32_lo));
return handle_unknown_wrmsr(index, val_64);
#if BX_CPU_LEVEL >= 6
case BX_MSR_SYSENTER_CS:
if (! is_cpu_extension_supported(BX_ISA_SYSENTER_SYSEXIT)) {