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([2001:b07:6468:f312:1c09:f536:3de6:228c]) by smtp.googlemail.com with ESMTPSA id ot2-20020a170906ccc200b006ef9bb0d19bsm6995811ejb.71.2022.04.27.09.16.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 Apr 2022 09:16:11 -0700 (PDT) Message-ID: Date: Wed, 27 Apr 2022 18:16:10 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH MANUALSEL 5.17 2/7] KVM: selftests: Silence compiler warning in the kvm_page_table_test Content-Language: en-US To: Sasha Levin , linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Thomas Huth , Claudio Imbrenda , shuah@kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org References: <20220427155408.19352-1-sashal@kernel.org> <20220427155408.19352-2-sashal@kernel.org> From: Paolo Bonzini In-Reply-To: <20220427155408.19352-2-sashal@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On 4/27/22 17:53, Sasha Levin wrote: > From: Thomas Huth > > [ Upstream commit 266a19a0bc4fbfab4d981a47640ca98972a01865 ] > > When compiling kvm_page_table_test.c, I get this compiler warning > with gcc 11.2: > > kvm_page_table_test.c: In function 'pre_init_before_test': > ../../../../tools/include/linux/kernel.h:44:24: warning: comparison of > distinct pointer types lacks a cast > 44 | (void) (&_max1 == &_max2); \ > | ^~ > kvm_page_table_test.c:281:21: note: in expansion of macro 'max' > 281 | alignment = max(0x100000, alignment); > | ^~~ > > Fix it by adjusting the type of the absolute value. > > Signed-off-by: Thomas Huth > Reviewed-by: Claudio Imbrenda > Message-Id: <20220414103031.565037-1-thuth@redhat.com> > Signed-off-by: Paolo Bonzini > Signed-off-by: Sasha Levin > --- > tools/testing/selftests/kvm/kvm_page_table_test.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c > index ba1fdc3dcf4a..2c4a7563a4f8 100644 > --- a/tools/testing/selftests/kvm/kvm_page_table_test.c > +++ b/tools/testing/selftests/kvm/kvm_page_table_test.c > @@ -278,7 +278,7 @@ static struct kvm_vm *pre_init_before_test(enum vm_guest_mode mode, void *arg) > else > guest_test_phys_mem = p->phys_offset; > #ifdef __s390x__ > - alignment = max(0x100000, alignment); > + alignment = max(0x100000UL, alignment); > #endif > guest_test_phys_mem = align_down(guest_test_phys_mem, alignment); > Acked-by: Paolo Bonzini