From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 02E92C4345F for ; Fri, 12 Apr 2024 10:36:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0UvXxZShT6OhF9Njy+duh9kbfzBEXcQZwaDG7vHEyHg=; b=hBjRoFY24heC+f O9+LweA7lZG7KIJvypWSgMKSKUGekAxlYJQDNsJVFYGJknJ5RfjaOUutGZPlkCLLMxOPR8GYzqQdt AAfWlrApg1BM+O0jueVFjblTv5w8Y5Tm1/OKWqklOysVCqhfgYwOXhj2X0z7FhqTKR/NYOTZXhtXt lovn2utR5A6Ow99mkJjyhQ87/hxQSNbVO+4g6xaLyCIQTP+iOMhHsj9xC0UapVS36cN6qCFFOOUrX sof77BGr8uitz2mxGbcS9nLZ8UgLErYKMd5uG8uJbv4hC7hLFwIIu39axgNOx2DwPVAj6fl0NKpU7 18eOXjtArDgfOggdu7YA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvEGO-0000000GhXo-3aaT; Fri, 12 Apr 2024 10:36:08 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvEF7-0000000GgUd-2MTP for linux-arm-kernel@lists.infradead.org; Fri, 12 Apr 2024 10:34:52 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 7BEA8113E; Fri, 12 Apr 2024 03:35:18 -0700 (PDT) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 6B4763F64C; Fri, 12 Apr 2024 03:34:47 -0700 (PDT) From: Suzuki K Poulose To: kvmarm@lists.linux.dev Cc: kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-arm-kernel@lists.infradead.org, maz@kernel.org, alexandru.elisei@arm.com, joey.gouly@arm.com, steven.price@arm.com, james.morse@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, andrew.jones@linux.dev, eric.auger@redhat.com, Gareth Stockwell , Suzuki K Poulose Subject: [kvm-unit-tests PATCH 15/33] arm: realm: add hvc and RSI_HOST_CALL tests Date: Fri, 12 Apr 2024 11:33:50 +0100 Message-Id: <20240412103408.2706058-16-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240412103408.2706058-1-suzuki.poulose@arm.com> References: <20240412103408.2706058-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240412_033449_889968_350B9F54 X-CRM114-Status: GOOD ( 14.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Gareth Stockwell Test that a HVC instruction in a Realm is turned into an undefined exception. Test that RSI_HOST_CALL passes through to the Hypervisor. Signed-off-by: Gareth Stockwell Signed-off-by: Suzuki K Poulose Signed-off-by: Suzuki K Poulose --- arm/realm-rsi.c | 110 +++++++++++++++++++++++++++++++++++++++++++++- arm/unittests.cfg | 15 +++++++ 2 files changed, 124 insertions(+), 1 deletion(-) diff --git a/arm/realm-rsi.c b/arm/realm-rsi.c index 6c228e42..5b90a343 100644 --- a/arm/realm-rsi.c +++ b/arm/realm-rsi.c @@ -14,6 +14,96 @@ #include #include +#define FID_SMCCC_VERSION 0x80000000 +#define FID_INVALID 0xc5000041 + +#define SMCCC_VERSION_1_1 0x10001 +#define SMCCC_SUCCESS 0 +#define SMCCC_NOT_SUPPORTED -1 + +static bool unknown_taken; + +static void unknown_handler(struct pt_regs *regs, unsigned int esr) +{ + report_info("unknown_handler: esr=0x%x", esr); + unknown_taken = true; +} + +static void hvc_call(unsigned int fid) +{ + struct smccc_result res; + + unknown_taken = false; + arm_smccc_hvc(fid, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &res); + + if (unknown_taken) { + report(true, "FID=0x%x caused Unknown exception", fid); + } else { + report(false, "FID=0x%x did not cause Unknown exception", fid); + report_info("x0: 0x%lx", res.r0); + report_info("x1: 0x%lx", res.r1); + report_info("x2: 0x%lx", res.r2); + report_info("x3: 0x%lx", res.r3); + report_info("x4: 0x%lx", res.r4); + report_info("x5: 0x%lx", res.r5); + report_info("x6: 0x%lx", res.r6); + report_info("x7: 0x%lx", res.r7); + } +} + +static void rsi_test_hvc(void) +{ + report_prefix_push("hvc"); + + /* Test that HVC causes Undefined exception, regardless of FID */ + install_exception_handler(EL1H_SYNC, ESR_EL1_EC_UNKNOWN, unknown_handler); + hvc_call(FID_SMCCC_VERSION); + hvc_call(FID_INVALID); + install_exception_handler(EL1H_SYNC, ESR_EL1_EC_UNKNOWN, NULL); + + report_prefix_pop(); +} + +static void host_call(unsigned int fid, unsigned long expected_x0) +{ + struct smccc_result res; + struct rsi_host_call __attribute__((aligned(256))) host_call_data = { 0 }; + + host_call_data.gprs[0] = fid; + + arm_smccc_smc(SMC_RSI_HOST_CALL, virt_to_phys(&host_call_data), + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &res); + + if (res.r0) { + report(false, "RSI_HOST_CALL returned 0x%lx", res.r0); + } else { + if (host_call_data.gprs[0] == expected_x0) { + report(true, "FID=0x%x x0=0x%lx", + fid, host_call_data.gprs[0]); + } else { + report(false, "FID=0x%x x0=0x%lx expected=0x%lx", + fid, host_call_data.gprs[0], expected_x0); + report_info("x1: 0x%lx", host_call_data.gprs[1]); + report_info("x2: 0x%lx", host_call_data.gprs[2]); + report_info("x3: 0x%lx", host_call_data.gprs[3]); + report_info("x4: 0x%lx", host_call_data.gprs[4]); + report_info("x5: 0x%lx", host_call_data.gprs[5]); + report_info("x6: 0x%lx", host_call_data.gprs[6]); + } + } +} + +static void rsi_test_host_call(void) +{ + report_prefix_push("host_call"); + + /* Test that host calls return expected values */ + host_call(FID_SMCCC_VERSION, SMCCC_VERSION_1_1); + host_call(FID_INVALID, SMCCC_NOT_SUPPORTED); + + report_prefix_pop(); +} + static void rsi_test_version(void) { struct smccc_result res; @@ -38,6 +128,8 @@ static void rsi_test_version(void) int main(int argc, char **argv) { + int i; + report_prefix_push("rsi"); if (!is_realm()) { @@ -45,7 +137,23 @@ int main(int argc, char **argv) goto exit; } - rsi_test_version(); + if (argc < 2) { + rsi_test_version(); + rsi_test_host_call(); + rsi_test_hvc(); + } else { + for (i = 1; i < argc; i++) { + if (strcmp(argv[i], "version") == 0) { + rsi_test_version(); + } else if (strcmp(argv[i], "hvc") == 0) { + rsi_test_hvc(); + } else if (strcmp(argv[i], "host_call") == 0) { + rsi_test_host_call(); + } else { + report_abort("Unknown subtest '%s'", argv[1]); + } + } + } exit: return report_summary(); } diff --git a/arm/unittests.cfg b/arm/unittests.cfg index a46c9ec7..b5be6668 100644 --- a/arm/unittests.cfg +++ b/arm/unittests.cfg @@ -286,5 +286,20 @@ groups = debug migration [realm-rsi] file = realm-rsi.flat groups = nodefault realms +extra_params = -append 'version' +accel = kvm +arch = arm64 + +[realm-host-call] +file = realm-rsi.flat +groups = nodefault realms +extra_params = -append 'host_call' +accel = kvm +arch = arm64 + +[realm-hvc] +file = realm-rsi.flat +groups = nodefault realms +extra_params = -append 'hvc' accel = kvm arch = arm64 -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel