linux-kernel - [PATCH 01/14] KVM: selftests: Define literal to asm constraint in aarch64 as unsigned long

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 13 Dec 2022 00:16:40 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>, Marc Zyngier <maz@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Tom Rix <trix@...hat.com>, kvm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        kvmarm@...ts.cs.columbia.edu, linux-riscv@...ts.infradead.org,
        llvm@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Ricardo Koller <ricarkol@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Aaron Lewis <aaronlewis@...gle.com>,
        Raghavendra Rao Ananta <rananta@...gle.com>
Subject: [PATCH 01/14] KVM: selftests: Define literal to asm constraint in
 aarch64 as unsigned long

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 <ricarkol@...gle.com>
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 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 = READ_ONCE(*guest_test_memory);
 	GUEST_ASSERT_EQ(val, TEST_DATA);
 }
-- 
2.39.0.rc1.256.g54fd8350bd-goog