On Tue, Mar 8, 2016 at 10:40 AM, H. Peter Anvin <h...@zytor.com> wrote: > On 03/08/16 02:30, Ingo Molnar wrote: >>>>> + * >>>>> + * This is considered a slow path. It is not used by modern libc >>>>> + * implementations on modern hardware except during process startup. >>>>> + * >>> >>> Sadly I believe Android still uses int $0x80 in the upstream version. >> >> I don't see how that fact conflicts with my statement: on 64-bit kernels INT >> $0x80 >> will (of course) work, but will land on another entry point: >> entry_INT80_compat(), >> not entry_INT80_32(). >> >> On 32-bit kernels the INT $0x80 entry point is entry_INT80_32(). >> > > It doesn't. I was referring to the above quote. Trying to fix that.
s/modern/most, perhaps? I'm hoping that some day Bionic goes away and gets replaced by musl. Of course, musl doesn't always use fast syscalls because it needs a vdso facility that doesn't currently exist. I'll deal with that eventually. > > -hpa > > -- Andy Lutomirski AMA Capital Management, LLC
