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Bug#800574: backport to sid/stable? (was RE: libc6: lock elision hazard on Intel Broadwell and Skylake)



Hi,

Thanks for this patch.

I was having trouble (crashes with the NVIDIA proprietary driver) on a
Debian system with an i7-5775C and libc6=2.19-18+deb8u1 (stable)

I tried first to update the Intel microcode with the "unreleased" 0x13
microcode version but it didn't disabled the TSX-NI instructions [1]
neither the crashes.

Finally I upgraded to glibc=2.21-0experimental2 and it fixed the crashes.

I wonder:

Should this patch be backported both to stable and unstable?


Thanks for your awesome work !


Regards
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[1] https://bugzilla.kernel.org/show_bug.cgi?id=103351#c93

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