From patchwork Fri Jan 10 14:54:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 11327575 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E7BE36C1 for ; Fri, 10 Jan 2020 14:55:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA6CE20842 for ; Fri, 10 Jan 2020 14:55:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="JW1RDjmp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728475AbgAJOzk (ORCPT ); Fri, 10 Jan 2020 09:55:40 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:43375 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728458AbgAJOzk (ORCPT ); Fri, 10 Jan 2020 09:55:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1578668138; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=a23BP+daq14PCXzBJ1VBQHnFohqZ7eqS+b84+7K03gk=; b=JW1RDjmpEsFJmYOLaCSZ8OHebHR2dEnrmct2dbN+aw1pweR0h8t94FonAGOiOacq10bF6C pU9VhVQ4LCZ9DGMPCT2Zl3KTDhy5TLNjI9gYOEg/QQgLpyXLSGS+6uT8Ev5w3hEGEWxukN axj6PP/aaR7Ct6Y6h4Hqv/E5Oma4gIE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-296-2xX62-pzMkGeqrj6IDdk8Q-1; Fri, 10 Jan 2020 09:55:36 -0500 X-MC-Unique: 2xX62-pzMkGeqrj6IDdk8Q-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 472A91083E84; Fri, 10 Jan 2020 14:55:35 +0000 (UTC) Received: from laptop.redhat.com (ovpn-117-108.ams2.redhat.com [10.36.117.108]) by smtp.corp.redhat.com (Postfix) with ESMTP id 615E67C3EB; Fri, 10 Jan 2020 14:55:32 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Cc: drjones@redhat.com, andre.przywara@arm.com, peter.maydell@linaro.org, yuzenghui@huawei.com, alexandru.elisei@arm.com, thuth@redhat.com Subject: [kvm-unit-tests PATCH v2 16/16] arm/arm64: ITS: pending table migration test Date: Fri, 10 Jan 2020 15:54:12 +0100 Message-Id: <20200110145412.14937-17-eric.auger@redhat.com> In-Reply-To: <20200110145412.14937-1-eric.auger@redhat.com> References: <20200110145412.14937-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Add two new migration tests. One testing the migration of a topology where collection were unmapped. The second test checks the migration of the pending table. Signed-off-by: Eric Auger --- arm/gic.c | 148 ++++++++++++++++++++++++++++++++++++++++++++++ arm/unittests.cfg | 16 ++++- 2 files changed, 163 insertions(+), 1 deletion(-) diff --git a/arm/gic.c b/arm/gic.c index bf4b5ba..cb976c3 100644 --- a/arm/gic.c +++ b/arm/gic.c @@ -170,6 +170,7 @@ static void lpi_handler(struct pt_regs *regs __unused) smp_rmb(); /* pairs with wmb in lpi_stats_expect */ lpi_stats.observed.cpu_id = smp_processor_id(); lpi_stats.observed.lpi_id = irqnr; + acked[lpi_stats.observed.cpu_id]++; smp_wmb(); /* pairs with rmb in check_lpi_stats */ } @@ -207,6 +208,18 @@ static void check_lpi_stats(void) } } +static void check_lpi_hits(int *expected) +{ + int i; + + for (i = 0; i < nr_cpus; i++) { + if (acked[i] != expected[i]) + report(false, "expected %d LPIs on PE #%d, %d observed", + expected[i], i, acked[i]); + } + report(true, "check LPI on all vcpus"); +} + static void gicv2_ipi_send_self(void) { writel(2 << 24 | IPI_IRQ, gicv2_dist_base() + GICD_SGIR); @@ -641,6 +654,18 @@ static int its_prerequisites(int nb_cpus) return 0; } +static void set_lpi(struct its_device *dev, u32 eventid, u32 physid, + struct its_collection *col) +{ + if (!dev || !col) + report_abort("wrong device or collection"); + + its_send_mapti(dev, physid, eventid, col); + + set_lpi_config(physid, LPI_PROP_DEFAULT); + its_send_invall(col); +} + /* * Setup the configuration for those mappings: * dev_id=2 event=20 -> vcpu 3, intid=8195 @@ -765,6 +790,121 @@ static void test_its_migration(void) check_lpi_stats(); } +static void test_migrate_unmapped_collection(void) +{ + struct its_collection *col; + struct its_device *dev2, *dev7; + u8 config; + + if (its_setup1()) + return; + + col = its_create_collection(nr_cpus - 1, nr_cpus - 1); + dev2 = its_get_device(2); + dev7 = its_get_device(7); + + /* MAPTI with the collection unmapped */ + set_lpi(dev2, 0, 8192, col); + + puts("Now migrate the VM, then press a key to continue...\n"); + (void)getchar(); + report(true, "Migration complete"); + + /* on the destination, map the collection */ + its_send_mapc(col, true); + + lpi_stats_expect(2, 8196); + its_send_int(dev7, 255); + check_lpi_stats(); + + config = get_lpi_config(8192); + report(config == LPI_PROP_DEFAULT, + "Config of LPI 8192 was properly migrated"); + + lpi_stats_expect(nr_cpus - 1, 8192); + its_send_int(dev2, 0); + check_lpi_stats(); + + /* unmap the collection */ + its_send_mapc(col, false); + + lpi_stats_expect(-1, -1); + its_send_int(dev2, 0); + check_lpi_stats(); + + /* remap event 0 onto lpiid 8193 */ + set_lpi(dev2, 0, 8193, col); + lpi_stats_expect(-1, -1); + its_send_int(dev2, 0); + check_lpi_stats(); + + /* remap the collection */ + its_send_mapc(col, true); + lpi_stats_expect(nr_cpus - 1, 8193); +} + +static void test_its_pending_migration(void) +{ + struct its_device *dev; + struct its_collection *collection[2]; + int expected[NR_CPUS]; + u64 pendbaser; + void *ptr; + int i; + + if (its_prerequisites(4)) + return; + + dev = its_create_device(2 /* dev id */, 8 /* nb_ites */); + its_send_mapd(dev, true); + + collection[0] = its_create_collection(nr_cpus - 1, nr_cpus - 1); + collection[1] = its_create_collection(nr_cpus - 2, nr_cpus - 2); + its_send_mapc(collection[0], true); + its_send_mapc(collection[1], true); + + /* disable lpi at redist level */ + gicv3_rdist_ctrl_lpi(nr_cpus - 1, false); + gicv3_rdist_ctrl_lpi(nr_cpus - 2, false); + + /* even lpis are assigned to even cpu */ + for (i = 0; i < 256; i++) { + struct its_collection *col = i % 2 ? collection[0] : + collection[1]; + int vcpu = col->target_address >> 16; + + its_send_mapti(dev, 8192 + i, i, col); + set_lpi_config(8192 + i, LPI_PROP_DEFAULT); + set_pending_table_bit(vcpu, 8192 + i, true); + } + its_send_invall(collection[0]); + its_send_invall(collection[1]); + + /* Set the PTZ bit on each pendbaser */ + + expected[nr_cpus - 1] = 128; + expected[nr_cpus - 2] = 128; + + ptr = gicv3_data.redist_base[nr_cpus - 1] + GICR_PENDBASER; + pendbaser = readq(ptr); + writeq(pendbaser & ~GICR_PENDBASER_PTZ, ptr); + + ptr = gicv3_data.redist_base[nr_cpus - 2] + GICR_PENDBASER; + pendbaser = readq(ptr); + writeq(pendbaser & ~GICR_PENDBASER_PTZ, ptr); + + gicv3_rdist_ctrl_lpi(nr_cpus - 1, true); + gicv3_rdist_ctrl_lpi(nr_cpus - 2, true); + + puts("Now migrate the VM, then press a key to continue...\n"); + (void)getchar(); + report(true, "Migration complete"); + + mdelay(1000); + + check_lpi_hits(expected); +} + int main(int argc, char **argv) { if (!gic_init()) { @@ -803,6 +943,14 @@ int main(int argc, char **argv) report_prefix_push(argv[1]); test_its_migration(); report_prefix_pop(); + } else if (!strcmp(argv[1], "its-pending-migration")) { + report_prefix_push(argv[1]); + test_its_pending_migration(); + report_prefix_pop(); + } else if (!strcmp(argv[1], "its-migrate-unmapped-collection")) { + report_prefix_push(argv[1]); + test_migrate_unmapped_collection(); + report_prefix_pop(); } else if (strcmp(argv[1], "its-introspection") == 0) { report_prefix_push(argv[1]); test_its_introspection(); diff --git a/arm/unittests.cfg b/arm/unittests.cfg index 29e2efc..911f0b7 100644 --- a/arm/unittests.cfg +++ b/arm/unittests.cfg @@ -145,7 +145,21 @@ file = gic.flat smp = $MAX_SMP accel = kvm extra_params = -machine gic-version=3 -append 'its-migration' -groups = its migration +groups = migration + +[its-pending-migration] +file = gic.flat +smp = $MAX_SMP +accel = kvm +extra_params = -machine gic-version=3 -append 'its-pending-migration' +groups = migration + +[its-migrate-unmapped-collection] +file = gic.flat +smp = $MAX_SMP +accel = kvm +extra_params = -machine gic-version=3 -append 'its-migrate-unmapped-collection' +groups = migration # Test PSCI emulation [psci]