Re: [PATCH v4.16-rc6 (1)] x86/vdso: VDSO should handle clock_gettime(CLOCK_MONOTONIC_RAW) without syscall
From: Jason Vas Dias
Date: Mon Mar 19 2018 - 13:48:35 EST
Note there is a bug raised by H.J. Liu :
Bug 199129: Don't build vDSO with $(RETPOLINE_CFLAGS) -DRETPOLINE
(https://bugzilla.kernel.org/show_bug.cgi?id=199129)
If you agree it is a bug, then use both patches from post :
'[PATCH v4.16-rc5 (2)] x86/vdso: VDSO should handle \
clock_gettime(CLOCK_MONOTONIC_RAW) without syscall
'
else, use the single patch from $subject, which makes the
calls to the statics in vclock_gettime.c' use
indirect_branch("keep") / function_return("keep") ,
to avoid generation of thunk relocations which would not
occur unless compiled with
-mindirect-branch=thunk-extern -mindirect-branch-register
.
Thanks & Regards,
Jason