On Sat, Jan 24, 2026 at 2:02 AM H. Peter Anvin <[email protected]> wrote: > > On 2026-01-23 08:54, Borislav Petkov wrote: > > > > Hmmm, so, my gut feeling tells me that we need a proper ia32 emu support > > detection in the running kernel. I can't find one after a short grep, maybe > > it > > should be in /proc/cpuinfo, maybe it should be a syscall which fails when > > IA32_EMULATION is off or maybe ptrace(2) says somewhere in the depths of its > > countless ops that it does support IA32 emulation. > > > > And then you could put that in that helper and then put that helper in > > a header and not copy it in every test... > > > > You can probe for it by trapping SIGSEGV and calling int $0x80. Not exactly > pretty, but... > > Making it a sysfs entry would allow dynamically control it, too... > > -hpa >
Yeah, it was actually a really quick fix, and now that I think about it, I agree that grepping like that doesn't look good. Sorry for the rushed patches, and thanks for all the comments. Regards, Slawek
