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Mon, 12 Dec 2022 16:16:58 -0800 (PST) Reply-To: Sean Christopherson Date: Tue, 13 Dec 2022 00:16:40 +0000 In-Reply-To: <20221213001653.3852042-1-seanjc@google.com> Mime-Version: 1.0 References: <20221213001653.3852042-1-seanjc@google.com> X-Mailer: git-send-email 2.39.0.rc1.256.g54fd8350bd-goog Message-ID: <20221213001653.3852042-2-seanjc@google.com> Subject: [PATCH 01/14] KVM: selftests: Define literal to asm constraint in aarch64 as unsigned long From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Paul Walmsley , Palmer Dabbelt , Albert Ou , Nathan Chancellor , Nick Desaulniers Cc: James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Tom Rix , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-riscv@lists.infradead.org, llvm@lists.linux.dev, linux-kernel@vger.kernel.org, Ricardo Koller , Sean Christopherson , Aaron Lewis , Raghavendra Rao Ananta Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Define a literal '0' asm input constraint to aarch64/page_fault_test's guest_cas() as an unsigned long to make clang happy. tools/testing/selftests/kvm/aarch64/page_fault_test.c:120:16: error: value size does not match register size specified by the constraint and modifier [-Werror,-Wasm-operand-widths] :: "r" (0), "r" (TEST_DATA), "r" (guest_test_memory)= ); ^ tools/testing/selftests/kvm/aarch64/page_fault_test.c:119:15: note: use constraint modifier "w" "casal %0, %1, [%2]\n" ^~ %w0 Fixes: 35c581015712 ("KVM: selftests: aarch64: Add aarch64/page_fault_test") Cc: Ricardo Koller Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- tools/testing/selftests/kvm/aarch64/page_fault_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/aarch64/page_fault_test.c b/tools/= testing/selftests/kvm/aarch64/page_fault_test.c index 95d22cfb7b41..beb944fa6fd4 100644 --- a/tools/testing/selftests/kvm/aarch64/page_fault_test.c +++ b/tools/testing/selftests/kvm/aarch64/page_fault_test.c @@ -117,7 +117,7 @@ static void guest_cas(void) GUEST_ASSERT(guest_check_lse()); asm volatile(".arch_extension lse\n" "casal %0, %1, [%2]\n" - :: "r" (0), "r" (TEST_DATA), "r" (guest_test_memory)); + :: "r" (0ul), "r" (TEST_DATA), "r" (guest_test_memory)); val =3D READ_ONCE(*guest_test_memory); GUEST_ASSERT_EQ(val, TEST_DATA); } --=20 2.39.0.rc1.256.g54fd8350bd-goog