From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B7E05606A328 for ; Wed, 4 Nov 2026 08:49:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=XPzKcK3H; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=T4d6Fo3/ DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Unsubscribe-Post: List-Owner; bh=n7dKS3uLxqz3hFWxQ/Hr/z79HJ4aXd4+1+IODE3lfqg=; b=XPzKcK3H+JkPBG bdA0nc5Tta9L63uVq9+8mU80BcTMrfkdxAZi5WM8DEGLs/EmCZsVDs9fRa6eB/Slf2aSD2PN2qaXY OnrDZmW4xSN47uPmza0h7/J6Ln/DIycWe0ZnsGTiLvHjllB6SLG3gbyFimGc6tORpoA+BpcdnezJi 3lZXguKVFCYtn1jj+eVvrvTZs3277O/+4fyNpoW8zlU+vhn/fhJ1H42kfQfmmbS+mCglEqxxDTU9D 5/VnKNGreqCafvj77zdA2LSMZ2NtDP6wE0HmecjMXjhyBD8TdUGPpITxKWIQ4mYEVK8Mt68jF4XSe LCF3XJ3c7t4EYtHuG2aQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xOWfx-00000004l27-1Gbu; Wed, 04 Nov 2026 08:48:57 +0000 Received: from out-179.mta0.migadu.com ([2001:41d0:1004:224b::b3] helo=mta0.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xOWfu-00000004l0Q-3MGT for linux-arm-kernel@lists.infradead.org; Wed, 04 Nov 2026 08:48:56 +0000 X-Envelope-To: linux-arm-kernel@lists.infradead.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=1793782132; v=1; x=1794386932; b=T4d6Fo3/hNK2uXQwUMot6YCj/ZodRvUBFeb4ywWwwFOHQd+itPMsvqE0eoQFVuWo4k4ZxXAH VXJxBPVgI1or6TMyiVonLMWqIPE3PdDPPrTEHiXOS+trnFekxJc11CSwT8Nv+7FSCn9XkGlz8f0 cY2klbT9eiG/jGq6/4tqq70g= X-Envelope-To: linux-arm-kernel@lists.infradead.org Received: by smtp.migadu.com with ESMTPS id fbd8c9a40e5de126; Wed, 04 Nov 2026 08:48:52 +0000 X-Mizu-Trace-ID: fbd8c9a40e5de126 X-Migadu-Flow: FLOW_OUT From: Fuad Tabba To: Marc Zyngier , Oliver Upton Cc: Will Deacon , 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 01/16] KVM: arm64: selftests: Inject an abort before a vCPU's first run Date: Wed, 4 Nov 2026 08:48:27 +0000 Message-ID: <20261104084842.132944-2-fuad.tabba@linux.dev> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261104084842.132944-1-fuad.tabba@linux.dev> References: <20261104084842.132944-1-fuad.tabba@linux.dev> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261104_004854_979184_976937D6 X-CRM114-Status: UNSURE ( 8.23 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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