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

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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...




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