On Wed, Apr 17, 2019 at 1:45 AM Peter Zijlstra <[email protected]> wrote: > > On Wed, Apr 17, 2019 at 01:39:19AM +0800, Kairui Song wrote: > > And I also think the "fake"/"real" reg is fragile, could we abuse > > another eflag (just like PERF_EFLAGS_EXACT) to indicate the regs are > > partially dumped fake registers? > > Sure, the SDM seems to suggest bits 1,3,5,15 are 'available'. We've > already used 3 and 5, and I think we can use !X86_EFLAGS_FIXED to > indicate a fake regs set. Any real regs set will always have that set.
Thanks! This is a good idea. Will update accordingly in V3 later. -- Best Regards, Kairui Song
