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[195.150.55.226]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bdecae32fadsm614281466b.56.2026.05.28.02.46.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 May 2026 02:46:44 -0700 (PDT) From: Piotr Zarycki To: seanjc@google.com, pbonzini@redhat.com Cc: shuah@kernel.org, dmatlack@google.com, vkuznets@redhat.com, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Piotr Zarycki Subject: [PATCH] KVM: selftests: hyperv_tlb_flush: use swap() to swap PTEs Date: Thu, 28 May 2026 11:45:42 +0200 Message-ID: <20260528094542.2529735-1-piotr.zarycki@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Replace the open-coded swap with the swap() macro. Signed-off-by: Piotr Zarycki --- tools/testing/selftests/kvm/include/test_util.h | 2 ++ tools/testing/selftests/kvm/x86/hyperv_tlb_flush.c | 6 +----- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h index d9b433b834f1..a66bc9ccba65 100644 --- a/tools/testing/selftests/kvm/include/test_util.h +++ b/tools/testing/selftests/kvm/include/test_util.h @@ -26,6 +26,8 @@ #define msecs_to_usecs(msec) ((msec) * 1000ULL) +#define swap(a, b) do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0) + static inline __printf(1, 2) int _no_printf(const char *format, ...) { return 0; } #ifdef DEBUG diff --git a/tools/testing/selftests/kvm/x86/hyperv_tlb_flush.c b/tools/testing/selftests/kvm/x86/hyperv_tlb_flush.c index 15ee8b7bfc11..514d41f00714 100644 --- a/tools/testing/selftests/kvm/x86/hyperv_tlb_flush.c +++ b/tools/testing/selftests/kvm/x86/hyperv_tlb_flush.c @@ -131,14 +131,10 @@ static void set_expected_val(void *addr, u64 val, int vcpu_id) /* * Update PTEs swapping two test pages. - * TODO: use swap()/xchg() when these are provided. */ static void swap_two_test_pages(gpa_t pte_gva1, gpa_t pte_gva2) { - u64 tmp = *(u64 *)pte_gva1; - - *(u64 *)pte_gva1 = *(u64 *)pte_gva2; - *(u64 *)pte_gva2 = tmp; + swap(*(u64 *)pte_gva1, *(u64 *)pte_gva2); } /* -- 2.54.0