From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f201.google.com (mail-pf1-f201.google.com [209.85.210.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AEC113CBE75 for ; Fri, 26 Jun 2026 21:35:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782509758; cv=none; b=FL5PRhM4HaBSXO2jmtnyl6PpACY5ekiVzz2fvBy+44a1vBGLKUCElJsiAsf5fJrK8HKibi+2gI+MkfuBdm85Vn37mh4YPBZR7+0v5d3t0Tmnoo/feeEwr6WxSqdDOZoFrFfAachUHnQbVPybHUyDdVw6scHuuEhOalNL4TuvPRQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782509758; c=relaxed/simple; bh=x0il2vjj7/pnkCCkuFn1bK1lYJTQplkd3lh6kXqMEH4=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=ppl6YjcqfZVQ1ZNY7MxEvo7/C3rJN/t86l3EvUbmtw+ULSGRpaNDULgwQiNjdkXw7j/7ASzmXK1K7RA8DkkQgWpUd1qA7Vfs8vG2RvMPQTsb9efJ9+hkDIS3H4BfepLPPbv3wu6977NK9j1B2U77LloL50ooMCjgWpwA+fszEes= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=hiR2YZjD; arc=none smtp.client-ip=209.85.210.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="hiR2YZjD" Received: by mail-pf1-f201.google.com with SMTP id d2e1a72fcca58-845a29d8c1eso955171b3a.2 for ; Fri, 26 Jun 2026 14:35:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782509756; x=1783114556; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=VVt0WM+SVB0eo4Zj9fN2K5go0bSH8gfMtLkiFlOavMc=; b=hiR2YZjDQlu3DQpzD6qh0RPjnXPtBBsob6dAhF3xUrieaOHM/zWK7XresrH/CkFWHN M3r6s3EhPk6QD13IgRb6ZuWQlmmUBh3aOhFiJUeI8UZUmncopR3O8x045TnbE5VQMZxZ zGyDDQgfegKRqSD89AWicfGaXd/JpZFcl2qbGdt0PXbohC3puWS8buUf5RAnhKOcXyE1 ++CDAJAVM/wqXmaG6785fdh+jBLvuxe64kSxn/vDbeYdljokt1Xb72ySZny/mVj/BPFB bcZVK7dmM8mz1VSla77yfvy5Q8c4w+Zzj+TYfgjrRxacf5weYW8mtH6BJFUNVqervvPX jaUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782509756; x=1783114556; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=VVt0WM+SVB0eo4Zj9fN2K5go0bSH8gfMtLkiFlOavMc=; b=ZIKwUP4H/kn1aJ9bSitpmqovMDWaOkWKyq6cC2/dvkYw6MGNL7AP4CgzIa5UCmZDk0 EIPmikAwA32H1qq5fvOc33dvjlx4D6CnrBbk6ONl8Y1ncFzUxYN1JUKwL7Ok9dYiMa30 lB/50aW8mHvhJmZkZ7aMJHboGaNWnlIg6T0mbBH5jP37gdoebcz/OBelWFaAViv6XeUf IU/q02Frzgn6kho9cILgN96pFWWGwqxmcIZkO65uorKjXaN/C6wN6E5bFaoUdMsw4Gy+ V8gYR1NhBgukr/dEp1sCnTEP1kkvfl8mpF1xdwGj4GAcpHxTY5mvZoUGeFw/2DokBO8W Cgrw== X-Forwarded-Encrypted: i=1; AFNElJ/dzIzWm9d/wRBc4+Xnvs/eqDvix3Z7ulw6SO+gwvfcyZk8n4yPM2y6NKmfXw9mT9AAVDDG4BvYJTnZ2Wc=@vger.kernel.org X-Gm-Message-State: AOJu0YyEA1UwoDsfbGXGRH/JhqXSUFbV/aPj6SgmSqKybJTuXwIJ4HUo pzXhELNVFd+z4h/cXAjSnl+rSUXApNl4oVy4WqCg+riSPYPQRevWve425H4sDDZpM6T4A52FCAI BlazrQQ== X-Received: from pfad6.prod.google.com ([2002:a05:6a00:286:b0:845:ce77:29bd]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:1a8e:b0:842:4a39:6047 with SMTP id d2e1a72fcca58-845b3ab68c8mr8857392b3a.29.1782509755806; Fri, 26 Jun 2026 14:35:55 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 26 Jun 2026 14:35:29 -0700 In-Reply-To: <20260626213534.3866178-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260626213534.3866178-1-seanjc@google.com> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260626213534.3866178-17-seanjc@google.com> Subject: [PATCH v8 16/20] KVM: selftests: Add kvm_sched_getaffinity() wrapper and convert users From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Oliver Upton , Sean Christopherson Cc: Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, David Matlack , Josh Hilke Content-Type: text/plain; charset="UTF-8" From: Josh Hilke Add and use a KVM wrapper for the sched_getaffinity() syscall so that selftests don't need to manually assert that the syscall succeeded. Note, some tests didn't actually assert success, but they all obviously rely on the syscall to succeed. Suggested-by: Sean Christopherson Signed-off-by: Josh Hilke [sean: massage changelog] Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/arch_timer.c | 2 +- tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c | 2 +- tools/testing/selftests/kvm/include/kvm_syscalls.h | 2 ++ tools/testing/selftests/kvm/lib/kvm_util.c | 5 ++--- tools/testing/selftests/kvm/mmu_stress_test.c | 6 +----- tools/testing/selftests/kvm/rseq_test.c | 4 +--- 6 files changed, 8 insertions(+), 13 deletions(-) diff --git a/tools/testing/selftests/kvm/arch_timer.c b/tools/testing/selftests/kvm/arch_timer.c index 90c475a61b22..f8b02597897b 100644 --- a/tools/testing/selftests/kvm/arch_timer.c +++ b/tools/testing/selftests/kvm/arch_timer.c @@ -85,7 +85,7 @@ static u32 test_get_pcpu(void) cpu_set_t online_cpuset; nproc_conf = get_nprocs_conf(); - sched_getaffinity(0, sizeof(cpu_set_t), &online_cpuset); + kvm_sched_getaffinity(0, sizeof(cpu_set_t), &online_cpuset); /* Randomly find an available pCPU to place a vCPU on */ do { diff --git a/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c b/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c index f7625eb711d6..d9c9377a6325 100644 --- a/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c +++ b/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c @@ -1039,7 +1039,7 @@ int main(int argc, char *argv[]) if (!parse_args(argc, argv)) exit(KSFT_SKIP); - sched_getaffinity(0, sizeof(default_cpuset), &default_cpuset); + kvm_sched_getaffinity(0, sizeof(default_cpuset), &default_cpuset); set_counter_defaults(); if (test_args.test_virtual) { diff --git a/tools/testing/selftests/kvm/include/kvm_syscalls.h b/tools/testing/selftests/kvm/include/kvm_syscalls.h index dc4fb97aef8d..5dae6143ddb0 100644 --- a/tools/testing/selftests/kvm/include/kvm_syscalls.h +++ b/tools/testing/selftests/kvm/include/kvm_syscalls.h @@ -12,6 +12,7 @@ #include #include +#include #include #define MAP_ARGS0(m,...) @@ -93,6 +94,7 @@ __KVM_SYSCALL_DEFINE(close, 1, int, fd); __KVM_SYSCALL_DEFINE(fallocate, 4, int, fd, int, mode, loff_t, offset, loff_t, len); __KVM_SYSCALL_DEFINE(ftruncate, 2, unsigned int, fd, off_t, length); __KVM_SYSCALL_DEFINE(madvise, 3, void *, addr, size_t, length, int, advice); +__KVM_SYSCALL_DEFINE(sched_getaffinity, 3, pid_t, pid, size_t, cpusetsize, cpu_set_t *, mask); #define kvm_free_fd(fd) \ do { \ diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 277166ab1aa9..6a0ee033fdef 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -674,13 +674,12 @@ void kvm_parse_vcpu_pinning(const char *pcpus_string, u32 vcpu_to_pcpu[], cpu_set_t allowed_mask; char *cpu, *cpu_list; char delim[2] = ","; - int i, r; + int i; cpu_list = strdup(pcpus_string); TEST_ASSERT(cpu_list, "strdup() allocation failed."); - r = sched_getaffinity(0, sizeof(allowed_mask), &allowed_mask); - TEST_ASSERT(!r, "sched_getaffinity() failed"); + kvm_sched_getaffinity(0, sizeof(allowed_mask), &allowed_mask); cpu = strtok(cpu_list, delim); diff --git a/tools/testing/selftests/kvm/mmu_stress_test.c b/tools/testing/selftests/kvm/mmu_stress_test.c index 473ef4c0ea9f..3d5f33a63b2b 100644 --- a/tools/testing/selftests/kvm/mmu_stress_test.c +++ b/tools/testing/selftests/kvm/mmu_stress_test.c @@ -255,11 +255,7 @@ static void rendezvous_with_vcpus(struct timespec *time, const char *name) static void calc_default_nr_vcpus(void) { cpu_set_t possible_mask; - int r; - - r = sched_getaffinity(0, sizeof(possible_mask), &possible_mask); - TEST_ASSERT(!r, "sched_getaffinity failed, errno = %d (%s)", - errno, strerror(errno)); + kvm_sched_getaffinity(0, sizeof(possible_mask), &possible_mask); nr_vcpus = CPU_COUNT(&possible_mask); TEST_ASSERT(nr_vcpus > 0, "Uh, no CPUs?"); diff --git a/tools/testing/selftests/kvm/rseq_test.c b/tools/testing/selftests/kvm/rseq_test.c index 6510fbfd64f1..557e393c223b 100644 --- a/tools/testing/selftests/kvm/rseq_test.c +++ b/tools/testing/selftests/kvm/rseq_test.c @@ -226,9 +226,7 @@ int main(int argc, char *argv[]) } } - r = sched_getaffinity(0, sizeof(possible_mask), &possible_mask); - TEST_ASSERT(!r, "sched_getaffinity failed, errno = %d (%s)", errno, - strerror(errno)); + kvm_sched_getaffinity(0, sizeof(possible_mask), &possible_mask); calc_min_max_cpu(); -- 2.55.0.rc0.799.gd6f94ed593-goog