similar to: Porting MS Structured Exception Handling to Linux.

Utilize some of the additions in the prior patches to clean up other code: - keep track of REP prefixes in only one variable - use REX_W in a few more places (instead of a literal number) Signed-off-by: Jan Beulich <jbeulich@suse.com> --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -304,6 +304,10 @@ union vex { ptr[1] = rex |

With the x86 instruction emulator no pretty complete, I''d like to re-submit this patch to support cmpxchg16b on x86-64 and at once rename the underlying emulator callback function pointer (making clear that if implemented, it is to operate on two longs rather than two 32-bit values). At the same time it fixes an apparently wrong emulator context initialization in the shadow code.

These instructions are prefix selected flavors of bsf and bsr respectively, and hence the presences of the F3 prefix must be handled in the emulation code in order to avoid running into problems on newer CPUs. Signed-off-by: Jan Beulich <jbeulich@suse.com> --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -1058,6 +1058,9 @@ static bool_t vcpu_has(

Commit 86781624 ("x86_emulate: PUSH <mem> must read source operand just once") corrected the operands of those of the operations of opcode extension group 5 that only read memory from SrcMem to DstMem, but failed to also switch the use of "dst" here to "src". Reported-by: Anthony Perard <anthony.perard@citrix.com> Signed-off-by: Jan Beulich

Hi all, In arch/x86/x86_emulate.c: x86_emulate(): 1716 case 0xfe: /* Grp4 */ 1717 generate_exception_if((m odrm_reg & 7) >= 2, EXC_UD); 1718 case 0xff: /* Grp5 */ 1719 switch ( modrm_reg & 7 ) 1720 { 1721 case 0: /* inc */ 1722 emulate_1op("inc", dst, _regs.eflags); 1723 break; 1724

Hello everyone, I was wondering what is the status regarding exceptions for the windows-msvc target? The corresponding part of the documentation (llvm/decs/ExceptionHandling.rst) hasn't been updated since 2015, was there any progress since? This is most likely known, but there's significant divergence between the behavior of MSVC cl.exe and clang-cl.exe: Consider: void crash() {

Otherwise, pause or the recommended one-byte ret workaround on AMD processors may have ill side effects. Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: 2007-02-07/xen/arch/x86/x86_emulate.c =================================================================== --- 2007-02-07.orig/xen/arch/x86/x86_emulate.c 2007-02-08 08:46:39.000000000 +0100 +++ 2007-02-07/xen/arch/x86/x86_emulate.c

We saw these issues in recent ChangeSet: 1. Reboot fail in Guest OS: Reboot in guest will close current qemu windows but does not create a new qemu window to restart 32bit HV/xen0: 2. 4 LTP math cases(float_bessel, float_exp_log, float_power and float_trigo) sometime fail. (775) 3. Kernel build in VMX may meet kernel panic. It complains like: "<0> Kernel panic - not syncing:

A new igt-gpu-tools release is available with the following changes: - Meson build options have been renamed. Please check the news options in meson_options.txt and make sure you don't get any warnings when configuring the project. (Simon Ser) - Compile-testing CI for MIPS. (Guillaume Tucker) - Various igt_runner reliability improvements (Petri Latvala & Arkadiusz Hiler) - Switched

The Wine development release 1.9.13 is now available. What's new in this release (see below for details): - New version of the Gecko engine based on Firefox 47. - More Shader Model 5 support in Direct3D. - Unicode data updated to Unicode 9.0.0. - Improvements to GDI paths and metafiles. - More progress towards the Direct3D command stream. - Joystick support improvements on Mac OS

This set of patches converts the way frames gets created from using PUSHes/POPs to using MOVes, thus allowing (in certain cases) to avoid saving/restoring part of the register set. While the place where the (small) win from this comes from varies between CPUs, the net effect is a 1 to 2% reduction on a combined interruption entry and exit when the full state save can be avoided. 1: use MOV

This patch series is a reworking of a series developed by Mukesh Rathor at Oracle. The entirety of the design and development was done by him; I have only reworked, reorganized, and simplified things in a way that I think makes more sense. The vast majority of the credit for this effort therefore goes to him. This version is labelled v13 because it is based on his most recent series, v11.