From patchwork Mon Nov 16 16:55:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 11909777 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 A3754A6A for ; Mon, 16 Nov 2020 16:59:44 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4BFBA20773 for ; Mon, 16 Nov 2020 16:59:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="OPsh4UGy" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4BFBA20773 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:59622 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kehqx-0008Bx-Dv for patchwork-qemu-devel@patchwork.kernel.org; Mon, 16 Nov 2020 11:59:43 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42594) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1keho7-0005DZ-Nc for qemu-devel@nongnu.org; Mon, 16 Nov 2020 11:56:47 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:47047) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1keho2-0007hL-GW for qemu-devel@nongnu.org; Mon, 16 Nov 2020 11:56:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605545801; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yO4M2oiKkbqA7mGdpYqMfZ+RBVUt6Hp0MlqhbTW1LgQ=; b=OPsh4UGykkiFGQy+R03ZtARWTuw27DFLMTfSr8CpZWdjpduu4LricojzjNj3ecrSf052Ri lQQIZ1bju0OTwvPtkunSMfZM1n2Hjz4lg4nRWTnrzJ3JqKyopt2VC+vwT1DVu8DVA32THD caKNHNjoDNjw/jxpI+KID0M1qoriB9Q= 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-369-L0X45InwMDi6w4hQ-OWKqQ-1; Mon, 16 Nov 2020 11:56:39 -0500 X-MC-Unique: L0X45InwMDi6w4hQ-OWKqQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 52E31824FAB; Mon, 16 Nov 2020 16:56:36 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-115-134.ams2.redhat.com [10.36.115.134]) by smtp.corp.redhat.com (Postfix) with ESMTP id 508925D9CC; Mon, 16 Nov 2020 16:55:56 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: "Michael S. Tsirkin" , Peter Xu , qemu-devel@nongnu.org Subject: [PATCH v3 2/5] memory: Add IOMMUTLBEvent Date: Mon, 16 Nov 2020 17:55:03 +0100 Message-Id: <20201116165506.31315-3-eperezma@redhat.com> In-Reply-To: <20201116165506.31315-1-eperezma@redhat.com> References: <20201116165506.31315-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/15 22:35:17 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Matthew Rosato , David Hildenbrand , Jason Wang , Aleksandar Rikalo , Juan Quintela , Halil Pasic , Christian Borntraeger , =?utf-8?q?Herv=C3=A9_Poussi?= =?utf-8?q?neau?= , Avi Kivity , Richard Henderson , Thomas Huth , Yan Zhao , Eduardo Habkost , Richard Henderson , Eric Auger , qemu-s390x@nongnu.org, qemu-arm@nongnu.org, David Gibson , Cornelia Huck , qemu-ppc@nongnu.org, Paolo Bonzini Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This way we can tell between regular IOMMUTLBEntry (entry of IOMMU hardware) and notifications. In the notifications, we set explicitly if it is a MAPs or an UNMAP, instead of trusting in entry permissions to differentiate them. Signed-off-by: Eugenio Pérez Reviewed-by: Peter Xu Reviewed-by: Juan Quintela Acked-by: Jason Wang Reviewed-by: Matthew Rosato Acked-by: David Gibson --- include/exec/memory.h | 27 ++++++------ hw/arm/smmu-common.c | 13 +++--- hw/arm/smmuv3.c | 13 +++--- hw/i386/intel_iommu.c | 88 ++++++++++++++++++++++------------------ hw/misc/tz-mpc.c | 32 ++++++++------- hw/ppc/spapr_iommu.c | 15 +++---- hw/s390x/s390-pci-inst.c | 27 +++++++----- hw/virtio/virtio-iommu.c | 30 +++++++------- softmmu/memory.c | 20 ++++----- 9 files changed, 143 insertions(+), 122 deletions(-) diff --git a/include/exec/memory.h b/include/exec/memory.h index d8456ccf52..e86b5e92da 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -116,6 +116,11 @@ struct IOMMUNotifier { }; typedef struct IOMMUNotifier IOMMUNotifier; +typedef struct IOMMUTLBEvent { + IOMMUNotifierFlag type; + IOMMUTLBEntry entry; +} IOMMUTLBEvent; + /* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */ #define RAM_PREALLOC (1 << 0) @@ -1326,24 +1331,18 @@ uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr); /** * memory_region_notify_iommu: notify a change in an IOMMU translation entry. * - * The notification type will be decided by entry.perm bits: - * - * - For UNMAP (cache invalidation) notifies: set entry.perm to IOMMU_NONE. - * - For MAP (newly added entry) notifies: set entry.perm to the - * permission of the page (which is definitely !IOMMU_NONE). - * * Note: for any IOMMU implementation, an in-place mapping change * should be notified with an UNMAP followed by a MAP. * * @iommu_mr: the memory region that was changed * @iommu_idx: the IOMMU index for the translation table which has changed - * @entry: the new entry in the IOMMU translation table. The entry - * replaces all old entries for the same virtual I/O address range. - * Deleted entries have .@perm == 0. + * @event: TLB event with the new entry in the IOMMU translation table. + * The entry replaces all old entries for the same virtual I/O address + * range. */ void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, int iommu_idx, - IOMMUTLBEntry entry); + IOMMUTLBEvent event); /** * memory_region_notify_iommu_one: notify a change in an IOMMU translation @@ -1353,12 +1352,12 @@ void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, * notifies a specific notifier, not all of them. * * @notifier: the notifier to be notified - * @entry: the new entry in the IOMMU translation table. The entry - * replaces all old entries for the same virtual I/O address range. - * Deleted entries have .@perm == 0. + * @event: TLB event with the new entry in the IOMMU translation table. + * The entry replaces all old entries for the same virtual I/O address + * range. */ void memory_region_notify_iommu_one(IOMMUNotifier *notifier, - IOMMUTLBEntry *entry); + IOMMUTLBEvent *event); /** * memory_region_register_iommu_notifier: register a notifier for changes to diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c index 88d2c454f0..405d5c5325 100644 --- a/hw/arm/smmu-common.c +++ b/hw/arm/smmu-common.c @@ -465,14 +465,15 @@ IOMMUMemoryRegion *smmu_iommu_mr(SMMUState *s, uint32_t sid) /* Unmap the whole notifier's range */ static void smmu_unmap_notifier_range(IOMMUNotifier *n) { - IOMMUTLBEntry entry; + IOMMUTLBEvent event; - entry.target_as = &address_space_memory; - entry.iova = n->start; - entry.perm = IOMMU_NONE; - entry.addr_mask = n->end - n->start; + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.target_as = &address_space_memory; + event.entry.iova = n->start; + event.entry.perm = IOMMU_NONE; + event.entry.addr_mask = n->end - n->start; - memory_region_notify_iommu_one(n, &entry); + memory_region_notify_iommu_one(n, &event); } /* Unmap all notifiers attached to @mr */ diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index 273f5f7dce..bbca0e9f20 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -800,7 +800,7 @@ static void smmuv3_notify_iova(IOMMUMemoryRegion *mr, uint8_t tg, uint64_t num_pages) { SMMUDevice *sdev = container_of(mr, SMMUDevice, iommu); - IOMMUTLBEntry entry; + IOMMUTLBEvent event; uint8_t granule = tg; if (!tg) { @@ -823,12 +823,13 @@ static void smmuv3_notify_iova(IOMMUMemoryRegion *mr, granule = tt->granule_sz; } - entry.target_as = &address_space_memory; - entry.iova = iova; - entry.addr_mask = num_pages * (1 << granule) - 1; - entry.perm = IOMMU_NONE; + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.target_as = &address_space_memory; + event.entry.iova = iova; + event.entry.addr_mask = num_pages * (1 << granule) - 1; + event.entry.perm = IOMMU_NONE; - memory_region_notify_iommu_one(n, &entry); + memory_region_notify_iommu_one(n, &event); } /* invalidate an asid/iova range tuple in all mr's */ diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 067593b9e4..56180b1c43 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1073,7 +1073,7 @@ static int vtd_iova_to_slpte(IntelIOMMUState *s, VTDContextEntry *ce, } } -typedef int (*vtd_page_walk_hook)(IOMMUTLBEntry *entry, void *private); +typedef int (*vtd_page_walk_hook)(IOMMUTLBEvent *event, void *private); /** * Constant information used during page walking @@ -1094,11 +1094,12 @@ typedef struct { uint16_t domain_id; } vtd_page_walk_info; -static int vtd_page_walk_one(IOMMUTLBEntry *entry, vtd_page_walk_info *info) +static int vtd_page_walk_one(IOMMUTLBEvent *event, vtd_page_walk_info *info) { VTDAddressSpace *as = info->as; vtd_page_walk_hook hook_fn = info->hook_fn; void *private = info->private; + IOMMUTLBEntry *entry = &event->entry; DMAMap target = { .iova = entry->iova, .size = entry->addr_mask, @@ -1107,7 +1108,7 @@ static int vtd_page_walk_one(IOMMUTLBEntry *entry, vtd_page_walk_info *info) }; DMAMap *mapped = iova_tree_find(as->iova_tree, &target); - if (entry->perm == IOMMU_NONE && !info->notify_unmap) { + if (event->type == IOMMU_NOTIFIER_UNMAP && !info->notify_unmap) { trace_vtd_page_walk_one_skip_unmap(entry->iova, entry->addr_mask); return 0; } @@ -1115,7 +1116,7 @@ static int vtd_page_walk_one(IOMMUTLBEntry *entry, vtd_page_walk_info *info) assert(hook_fn); /* Update local IOVA mapped ranges */ - if (entry->perm) { + if (event->type == IOMMU_NOTIFIER_MAP) { if (mapped) { /* If it's exactly the same translation, skip */ if (!memcmp(mapped, &target, sizeof(target))) { @@ -1141,19 +1142,21 @@ static int vtd_page_walk_one(IOMMUTLBEntry *entry, vtd_page_walk_info *info) int ret; /* Emulate an UNMAP */ + event->type = IOMMU_NOTIFIER_UNMAP; entry->perm = IOMMU_NONE; trace_vtd_page_walk_one(info->domain_id, entry->iova, entry->translated_addr, entry->addr_mask, entry->perm); - ret = hook_fn(entry, private); + ret = hook_fn(event, private); if (ret) { return ret; } /* Drop any existing mapping */ iova_tree_remove(as->iova_tree, &target); - /* Recover the correct permission */ + /* Recover the correct type */ + event->type = IOMMU_NOTIFIER_MAP; entry->perm = cache_perm; } } @@ -1170,7 +1173,7 @@ static int vtd_page_walk_one(IOMMUTLBEntry *entry, vtd_page_walk_info *info) trace_vtd_page_walk_one(info->domain_id, entry->iova, entry->translated_addr, entry->addr_mask, entry->perm); - return hook_fn(entry, private); + return hook_fn(event, private); } /** @@ -1191,7 +1194,7 @@ static int vtd_page_walk_level(dma_addr_t addr, uint64_t start, uint32_t offset; uint64_t slpte; uint64_t subpage_size, subpage_mask; - IOMMUTLBEntry entry; + IOMMUTLBEvent event; uint64_t iova = start; uint64_t iova_next; int ret = 0; @@ -1245,13 +1248,15 @@ static int vtd_page_walk_level(dma_addr_t addr, uint64_t start, * * In either case, we send an IOTLB notification down. */ - entry.target_as = &address_space_memory; - entry.iova = iova & subpage_mask; - entry.perm = IOMMU_ACCESS_FLAG(read_cur, write_cur); - entry.addr_mask = ~subpage_mask; + event.entry.target_as = &address_space_memory; + event.entry.iova = iova & subpage_mask; + event.entry.perm = IOMMU_ACCESS_FLAG(read_cur, write_cur); + event.entry.addr_mask = ~subpage_mask; /* NOTE: this is only meaningful if entry_valid == true */ - entry.translated_addr = vtd_get_slpte_addr(slpte, info->aw); - ret = vtd_page_walk_one(&entry, info); + event.entry.translated_addr = vtd_get_slpte_addr(slpte, info->aw); + event.type = event.entry.perm ? IOMMU_NOTIFIER_MAP : + IOMMU_NOTIFIER_UNMAP; + ret = vtd_page_walk_one(&event, info); } if (ret < 0) { @@ -1430,10 +1435,10 @@ static int vtd_dev_to_context_entry(IntelIOMMUState *s, uint8_t bus_num, return 0; } -static int vtd_sync_shadow_page_hook(IOMMUTLBEntry *entry, +static int vtd_sync_shadow_page_hook(IOMMUTLBEvent *event, void *private) { - memory_region_notify_iommu((IOMMUMemoryRegion *)private, 0, *entry); + memory_region_notify_iommu(private, 0, *event); return 0; } @@ -1993,14 +1998,17 @@ static void vtd_iotlb_page_invalidate_notify(IntelIOMMUState *s, * page tables. We just deliver the PSI down to * invalidate caches. */ - IOMMUTLBEntry entry = { - .target_as = &address_space_memory, - .iova = addr, - .translated_addr = 0, - .addr_mask = size - 1, - .perm = IOMMU_NONE, + IOMMUTLBEvent event = { + .type = IOMMU_NOTIFIER_UNMAP, + .entry = { + .target_as = &address_space_memory, + .iova = addr, + .translated_addr = 0, + .addr_mask = size - 1, + .perm = IOMMU_NONE, + }, }; - memory_region_notify_iommu(&vtd_as->iommu, 0, entry); + memory_region_notify_iommu(&vtd_as->iommu, 0, event); } } } @@ -2412,7 +2420,7 @@ static bool vtd_process_device_iotlb_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { VTDAddressSpace *vtd_dev_as; - IOMMUTLBEntry entry; + IOMMUTLBEvent event; struct VTDBus *vtd_bus; hwaddr addr; uint64_t sz; @@ -2460,12 +2468,13 @@ static bool vtd_process_device_iotlb_desc(IntelIOMMUState *s, sz = VTD_PAGE_SIZE; } - entry.target_as = &vtd_dev_as->as; - entry.addr_mask = sz - 1; - entry.iova = addr; - entry.perm = IOMMU_NONE; - entry.translated_addr = 0; - memory_region_notify_iommu(&vtd_dev_as->iommu, 0, entry); + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.target_as = &vtd_dev_as->as; + event.entry.addr_mask = sz - 1; + event.entry.iova = addr; + event.entry.perm = IOMMU_NONE; + event.entry.translated_addr = 0; + memory_region_notify_iommu(&vtd_dev_as->iommu, 0, event); done: return true; @@ -3485,19 +3494,20 @@ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n) size = remain = end - start + 1; while (remain >= VTD_PAGE_SIZE) { - IOMMUTLBEntry entry; + IOMMUTLBEvent event; uint64_t mask = get_naturally_aligned_size(start, remain, s->aw_bits); assert(mask); - entry.iova = start; - entry.addr_mask = mask - 1; - entry.target_as = &address_space_memory; - entry.perm = IOMMU_NONE; + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.iova = start; + event.entry.addr_mask = mask - 1; + event.entry.target_as = &address_space_memory; + event.entry.perm = IOMMU_NONE; /* This field is meaningless for unmap */ - entry.translated_addr = 0; + event.entry.translated_addr = 0; - memory_region_notify_iommu_one(n, &entry); + memory_region_notify_iommu_one(n, &event); start += mask; remain -= mask; @@ -3533,9 +3543,9 @@ static void vtd_address_space_refresh_all(IntelIOMMUState *s) vtd_switch_address_space_all(s); } -static int vtd_replay_hook(IOMMUTLBEntry *entry, void *private) +static int vtd_replay_hook(IOMMUTLBEvent *event, void *private) { - memory_region_notify_iommu_one((IOMMUNotifier *)private, entry); + memory_region_notify_iommu_one(private, event); return 0; } diff --git a/hw/misc/tz-mpc.c b/hw/misc/tz-mpc.c index 98f151237f..30481e1c90 100644 --- a/hw/misc/tz-mpc.c +++ b/hw/misc/tz-mpc.c @@ -82,8 +82,10 @@ static void tz_mpc_iommu_notify(TZMPC *s, uint32_t lutidx, /* Called when the LUT word at lutidx has changed from oldlut to newlut; * must call the IOMMU notifiers for the changed blocks. */ - IOMMUTLBEntry entry = { - .addr_mask = s->blocksize - 1, + IOMMUTLBEvent event = { + .entry = { + .addr_mask = s->blocksize - 1, + } }; hwaddr addr = lutidx * s->blocksize * 32; int i; @@ -100,26 +102,28 @@ static void tz_mpc_iommu_notify(TZMPC *s, uint32_t lutidx, block_is_ns = newlut & (1 << i); trace_tz_mpc_iommu_notify(addr); - entry.iova = addr; - entry.translated_addr = addr; + event.entry.iova = addr; + event.entry.translated_addr = addr; - entry.perm = IOMMU_NONE; - memory_region_notify_iommu(&s->upstream, IOMMU_IDX_S, entry); - memory_region_notify_iommu(&s->upstream, IOMMU_IDX_NS, entry); + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.perm = IOMMU_NONE; + memory_region_notify_iommu(&s->upstream, IOMMU_IDX_S, event); + memory_region_notify_iommu(&s->upstream, IOMMU_IDX_NS, event); - entry.perm = IOMMU_RW; + event.type = IOMMU_NOTIFIER_MAP; + event.entry.perm = IOMMU_RW; if (block_is_ns) { - entry.target_as = &s->blocked_io_as; + event.entry.target_as = &s->blocked_io_as; } else { - entry.target_as = &s->downstream_as; + event.entry.target_as = &s->downstream_as; } - memory_region_notify_iommu(&s->upstream, IOMMU_IDX_S, entry); + memory_region_notify_iommu(&s->upstream, IOMMU_IDX_S, event); if (block_is_ns) { - entry.target_as = &s->downstream_as; + event.entry.target_as = &s->downstream_as; } else { - entry.target_as = &s->blocked_io_as; + event.entry.target_as = &s->blocked_io_as; } - memory_region_notify_iommu(&s->upstream, IOMMU_IDX_NS, entry); + memory_region_notify_iommu(&s->upstream, IOMMU_IDX_NS, event); } } diff --git a/hw/ppc/spapr_iommu.c b/hw/ppc/spapr_iommu.c index 0fecabc135..8e237d0397 100644 --- a/hw/ppc/spapr_iommu.c +++ b/hw/ppc/spapr_iommu.c @@ -445,7 +445,7 @@ static void spapr_tce_reset(DeviceState *dev) static target_ulong put_tce_emu(SpaprTceTable *tcet, target_ulong ioba, target_ulong tce) { - IOMMUTLBEntry entry; + IOMMUTLBEvent event; hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift); unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift; @@ -457,12 +457,13 @@ static target_ulong put_tce_emu(SpaprTceTable *tcet, target_ulong ioba, tcet->table[index] = tce; - entry.target_as = &address_space_memory, - entry.iova = (ioba - tcet->bus_offset) & page_mask; - entry.translated_addr = tce & page_mask; - entry.addr_mask = ~page_mask; - entry.perm = spapr_tce_iommu_access_flags(tce); - memory_region_notify_iommu(&tcet->iommu, 0, entry); + event.entry.target_as = &address_space_memory, + event.entry.iova = (ioba - tcet->bus_offset) & page_mask; + event.entry.translated_addr = tce & page_mask; + event.entry.addr_mask = ~page_mask; + event.entry.perm = spapr_tce_iommu_access_flags(tce); + event.type = event.entry.perm ? IOMMU_NOTIFIER_MAP : IOMMU_NOTIFIER_UNMAP; + memory_region_notify_iommu(&tcet->iommu, 0, event); return H_SUCCESS; } diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index 58cd041d17..d7caeeea0e 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -590,15 +590,18 @@ static uint32_t s390_pci_update_iotlb(S390PCIIOMMU *iommu, S390IOTLBEntry *entry) { S390IOTLBEntry *cache = g_hash_table_lookup(iommu->iotlb, &entry->iova); - IOMMUTLBEntry notify = { - .target_as = &address_space_memory, - .iova = entry->iova, - .translated_addr = entry->translated_addr, - .perm = entry->perm, - .addr_mask = ~PAGE_MASK, + IOMMUTLBEvent event = { + .type = entry->perm ? IOMMU_NOTIFIER_MAP : IOMMU_NOTIFIER_UNMAP, + .entry = { + .target_as = &address_space_memory, + .iova = entry->iova, + .translated_addr = entry->translated_addr, + .perm = entry->perm, + .addr_mask = ~PAGE_MASK, + }, }; - if (entry->perm == IOMMU_NONE) { + if (event.type == IOMMU_NOTIFIER_UNMAP) { if (!cache) { goto out; } @@ -611,9 +614,11 @@ static uint32_t s390_pci_update_iotlb(S390PCIIOMMU *iommu, goto out; } - notify.perm = IOMMU_NONE; - memory_region_notify_iommu(&iommu->iommu_mr, 0, notify); - notify.perm = entry->perm; + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.perm = IOMMU_NONE; + memory_region_notify_iommu(&iommu->iommu_mr, 0, event); + event.type = IOMMU_NOTIFIER_MAP; + event.entry.perm = entry->perm; } cache = g_new(S390IOTLBEntry, 1); @@ -625,7 +630,7 @@ static uint32_t s390_pci_update_iotlb(S390PCIIOMMU *iommu, dec_dma_avail(iommu); } - memory_region_notify_iommu(&iommu->iommu_mr, 0, notify); + memory_region_notify_iommu(&iommu->iommu_mr, 0, event); out: return iommu->dma_limit ? iommu->dma_limit->avail : 1; diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index fc5c75d693..cea8811295 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -129,7 +129,7 @@ static void virtio_iommu_notify_map(IOMMUMemoryRegion *mr, hwaddr virt_start, hwaddr virt_end, hwaddr paddr, uint32_t flags) { - IOMMUTLBEntry entry; + IOMMUTLBEvent event; IOMMUAccessFlags perm = IOMMU_ACCESS_FLAG(flags & VIRTIO_IOMMU_MAP_F_READ, flags & VIRTIO_IOMMU_MAP_F_WRITE); @@ -141,19 +141,20 @@ static void virtio_iommu_notify_map(IOMMUMemoryRegion *mr, hwaddr virt_start, trace_virtio_iommu_notify_map(mr->parent_obj.name, virt_start, virt_end, paddr, perm); - entry.target_as = &address_space_memory; - entry.addr_mask = virt_end - virt_start; - entry.iova = virt_start; - entry.perm = perm; - entry.translated_addr = paddr; + event.type = IOMMU_NOTIFIER_MAP; + event.entry.target_as = &address_space_memory; + event.entry.addr_mask = virt_end - virt_start; + event.entry.iova = virt_start; + event.entry.perm = perm; + event.entry.translated_addr = paddr; - memory_region_notify_iommu(mr, 0, entry); + memory_region_notify_iommu(mr, 0, event); } static void virtio_iommu_notify_unmap(IOMMUMemoryRegion *mr, hwaddr virt_start, hwaddr virt_end) { - IOMMUTLBEntry entry; + IOMMUTLBEvent event; if (!(mr->iommu_notify_flags & IOMMU_NOTIFIER_UNMAP)) { return; @@ -161,13 +162,14 @@ static void virtio_iommu_notify_unmap(IOMMUMemoryRegion *mr, hwaddr virt_start, trace_virtio_iommu_notify_unmap(mr->parent_obj.name, virt_start, virt_end); - entry.target_as = &address_space_memory; - entry.addr_mask = virt_end - virt_start; - entry.iova = virt_start; - entry.perm = IOMMU_NONE; - entry.translated_addr = 0; + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.target_as = &address_space_memory; + event.entry.addr_mask = virt_end - virt_start; + event.entry.iova = virt_start; + event.entry.perm = IOMMU_NONE; + event.entry.translated_addr = 0; - memory_region_notify_iommu(mr, 0, entry); + memory_region_notify_iommu(mr, 0, event); } static gboolean virtio_iommu_notify_unmap_cb(gpointer key, gpointer value, diff --git a/softmmu/memory.c b/softmmu/memory.c index 2b11ac5238..ca281edaea 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1933,11 +1933,15 @@ void memory_region_unregister_iommu_notifier(MemoryRegion *mr, } void memory_region_notify_iommu_one(IOMMUNotifier *notifier, - IOMMUTLBEntry *entry) + IOMMUTLBEvent *event) { - IOMMUNotifierFlag request_flags; + IOMMUTLBEntry *entry = &event->entry; hwaddr entry_end = entry->iova + entry->addr_mask; + if (event->type == IOMMU_NOTIFIER_UNMAP) { + assert(entry->perm == IOMMU_NONE); + } + /* * Skip the notification if the notification does not overlap * with registered range. @@ -1948,20 +1952,14 @@ void memory_region_notify_iommu_one(IOMMUNotifier *notifier, assert(entry->iova >= notifier->start && entry_end <= notifier->end); - if (entry->perm & IOMMU_RW) { - request_flags = IOMMU_NOTIFIER_MAP; - } else { - request_flags = IOMMU_NOTIFIER_UNMAP; - } - - if (notifier->notifier_flags & request_flags) { + if (event->type & notifier->notifier_flags) { notifier->notify(notifier, entry); } } void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, int iommu_idx, - IOMMUTLBEntry entry) + IOMMUTLBEvent event) { IOMMUNotifier *iommu_notifier; @@ -1969,7 +1967,7 @@ void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) { if (iommu_notifier->iommu_idx == iommu_idx) { - memory_region_notify_iommu_one(iommu_notifier, &entry); + memory_region_notify_iommu_one(iommu_notifier, &event); } } }