Re: [PATCH] selftests: kvm: Fix a compile error in selftests/kvm/rseq_test.c

[Liam Merwick]

On 07/09/2022 17:01, Sean Christopherson wrote:
> On Tue, Aug 02, 2022, Jinrong Liang wrote:
> > From: Jinrong Liang <cloudliang@xxxxxxxxxxx>
> >
> > The following warning appears when executing:
> > 	make -C tools/testing/selftests/kvm
> >
> > rseq_test.c: In function ‘main’:
> > rseq_test.c:237:33: warning: implicit declaration of function ‘gettid’; did you mean ‘getgid’? [-Wimplicit-function-declaration]
> >            (void *)(unsigned long)gettid());
> >                                   ^~~~~~
> >                                   getgid
> > /usr/bin/ld: /tmp/ccr5mMko.o: in function `main':
> > ../kvm/tools/testing/selftests/kvm/rseq_test.c:237: undefined reference to `gettid'
> > collect2: error: ld returned 1 exit status
> > make: *** [../lib.mk:173: ../kvm/tools/testing/selftests/kvm/rseq_test] Error 1
> >
> > Use the more compatible syscall(SYS_gettid) instead of gettid() to fix it.
> > More subsequent reuse may cause it to be wrapped in a lib file.
> >
> > Signed-off-by: Jinrong Liang <cloudliang@xxxxxxxxxxx>
> > ---
>
> Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>

Can a 'Cc: stable@xxxxxxxxxxxxxxx' be added also as e923b0537d28 got 
backported to v5.15.58

Reviewed-by: Liam Merwick <liam.merwick@xxxxxxxxxx>


> Paolo, do you want to grab this for 6.0?  It doesn't look like we're going to have
> a more elegant solution anytime soon...