From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=95.215.58.106 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794214139; b=gSPWm1uHPI0+GXIfvBgb/qNcsAzNFyTsa03vQLkH0AVzR/Lg3NIkx+MlUiGtwIZN/pYs XkY0SLKDgIuzuOeuJr98P0j2MR+Yc12jojSGImTBYjB55+wOdyM6Be4xPfmoELbTPueF6 ar/Q7YDu2sE5Ld8b1mZRNZzbh+WaE5Eh5csFpXIv4nKE4RPYbFeYpa6kw/4ckDAoE6fly 8wc0ypqLi34TSTl3mI5nLWoJmbPBviVwBTLpL5pPhc+NSUBx7v+Y6yR8Cpp9YdDR7yO8d hn0w7jne46l1Kz7M7MCS5/ZKp5fgGIRRQaz4WamJ1gB2C3TMcgfVuBttNoJA0a0dWGA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794214139; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:To:Cc:Subject:Date:Message-ID: X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding; bh=n7dKS3uLxqz3hFWxQ/Hr/z79HJ4aXd4+1+IODE3lfqg=; b=XHRr7as9aueM1SF8Gkewp3Qd/ca79+Z5uOlmqbT05yDxMKA95AOIgkAPBooGn3iCGZyf sckPmGu5MvFlfEhGBsEmlhANVs+52DLI/JURAEcrwn1Aa8XadrF2aXIhDeQ2Xc2+dDmCX IdkF0jN+Dn+dBkjrpxpM791WueWCTohYsgUzsz/un+r0oROcHxmhpoX6c/pzF3ss9a5x2 syE/IpcdiP+iF4C9ewSU2Bfx99Y4c1KcWs5m+J7ZGcvcEzuHBzCtJp1BmhHiXiaFQEYFq RBK8kavOTrA3s29GyMsPAQrtPrVMW/X4XY539v7PMsPRyRnR9o0Y8ze/4zdZqz9aGCg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=JYmoB1rv; arc=none smtp.remote-ip=95.215.58.106 Received: from mta1.migadu.com (out-106.mta1.migadu.com [95.215.58.106]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82ED0606A31C for ; Mon, 9 Nov 2026 08:48:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 82ED0606A31C Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=JYmoB1rv X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=ZJp1sWID1Y8h4yq9sHvxEkK5gbfl1wOQbzOgvALLC6k=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794214136; v=1; x=1794818936; b=JYmoB1rvb1NwrRmhDmfRkFPQsb7Ofvk+pfQwPzft0tj53oNTU9Q2T2h959A+ZfnOr1izEMM1 c7+Mei6o3PKNMYEZ57XqIUhxHCCE44FJsU1fXN17A64PbOvHKMmGm0XzHmLzZ1mRBbQCTK7TfZe GIEHXnvnMo+r1HKdpcklITR8= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id f659de905a07cf78; Mon, 09 Nov 2026 08:48:56 +0000 X-Mizu-Trace-ID: f659de905a07cf78 X-Migadu-Flow: FLOW_OUT From: Fuad Tabba To: Marc Zyngier , Oliver Upton Cc: Will Deacon , Catalin Marinas , Mark Rutland , Paolo Bonzini , Sean Christopherson , Shuah Khan , Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , Vincent Donnefort , Quentin Perret , Fuad Tabba , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 02/19] KVM: arm64: selftests: Inject an abort before a vCPU's first run Date: Mon, 9 Nov 2026 08:48:37 +0000 Message-ID: <20261109084854.840576-3-fuad.tabba@linux.dev> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261109084854.840576-1-fuad.tabba@linux.dev> References: <20261109084854.840576-1-fuad.tabba@linux.dev> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit KVM commits an external abort injected with KVM_SET_VCPU_EVENTS immediately, even before the vCPU's first run. For a normal VM on a pKVM host that path panicked the hypervisor until commit a2bb5f5c67a95 ("KVM: arm64: Pin the host vCPU before adjusting its PC under pKVM"). No test injects before the first run. Add one, checking that the guest takes the abort at its entry point. Signed-off-by: Fuad Tabba --- .../selftests/kvm/arm64/external_aborts.c | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/tools/testing/selftests/kvm/arm64/external_aborts.c b/tools/testing/selftests/kvm/arm64/external_aborts.c index 1a858d0d82968..45c9300b2ca0e 100644 --- a/tools/testing/selftests/kvm/arm64/external_aborts.c +++ b/tools/testing/selftests/kvm/arm64/external_aborts.c @@ -113,6 +113,26 @@ static void vcpu_run_expect_sync(struct kvm_vcpu *vcpu) __vcpu_run_expect(vcpu, UCALL_SYNC); } +static void test_sea_before_run_guest(void) +{ + GUEST_FAIL("Guest ran before taking the injected abort"); +} + +/* Test that an abort injected before the vCPU's first run is taken at its entry point. */ +static void test_sea_before_run(void) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm = vm_create_with_dabt_handler(&vcpu, test_sea_before_run_guest, + expect_sea_handler); + + expected_abort_pc = (u64)test_sea_before_run_guest; + sync_global_to_guest(vm, expected_abort_pc); + + vcpu_inject_sea(vcpu); + vcpu_run_expect_done(vcpu); + kvm_vm_free(vm); +} + extern char test_mmio_abort_insn; static noinline void test_mmio_abort_guest(void) @@ -420,6 +440,7 @@ static void test_serror_amo(void) int main(void) { + test_sea_before_run(); test_mmio_abort(); test_mmio_nisv(); test_mmio_nisv_abort(); -- 2.47.3