From patchwork Mon Sep 30 09:26:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Zhenzhong Duan X-Patchwork-Id: 1990851 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=YTQa4H/Z; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XHG5N1Xzyz1xsq for ; Mon, 30 Sep 2024 19:30:32 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1svCj9-0007kR-C2; Mon, 30 Sep 2024 05:29:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1svCj8-0007eK-4V for qemu-devel@nongnu.org; Mon, 30 Sep 2024 05:29:58 -0400 Received: from mgamail.intel.com ([198.175.65.21]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1svCj6-0006o0-6n for qemu-devel@nongnu.org; Mon, 30 Sep 2024 05:29:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1727688596; x=1759224596; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=iGSTAu4JHDT2gQAXGPvff6xdwizcWPqrIg5aCumNpZI=; b=YTQa4H/ZgjGRfeBNbuPqLDpxz9IFM2ghb8hHMnXHnPiVsU7SYxmt6Owg r+fp2ERc14RiWzFpxCx5Eqm3CI6BVuJC+U7fdf0/bunErMeTbNcdqjyqb d6KMkQoJb8eUNdqjRJsuCCWkYzzJIPUB+HIrgtoLfVUJMnCdpJT75PgaA yp1vdgB68xFRzr3f5KVZLsnaSNzGLfS5P7nk9iRUq8P47s/7JFisNW5Gg LAkepCgl5xb/c9zqknMBTi6VBwQUjIekk+B2M0Tblb3UDMjkdtNo+HSN9 FxN1hwuPc6b9zUSBzIJl7zUrU5jIYXRPDHRszUB9ciMECezc8A8WgCp7G A==; X-CSE-ConnectionGUID: qedsKEBhRKSSdgG15diUpg== X-CSE-MsgGUID: ijJ6u2iTSPqdK6Kl1Ssy8Q== X-IronPort-AV: E=McAfee;i="6700,10204,11210"; a="26721679" X-IronPort-AV: E=Sophos;i="6.11,165,1725346800"; d="scan'208";a="26721679" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2024 02:29:55 -0700 X-CSE-ConnectionGUID: o/qMUr41QNC44xgNWx6yCQ== X-CSE-MsgGUID: RyUf+mgCTriuuE84uPp9+w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,165,1725346800"; d="scan'208";a="77749439" Received: from spr-s2600bt.bj.intel.com ([10.240.192.127]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2024 02:29:51 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Paolo Bonzini , Richard Henderson , Eduardo Habkost , Marcel Apfelbaum Subject: [PATCH v4 04/17] intel_iommu: Flush stage-2 cache in PASID-selective PASID-based iotlb invalidation Date: Mon, 30 Sep 2024 17:26:18 +0800 Message-Id: <20240930092631.2997543-5-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930092631.2997543-1-zhenzhong.duan@intel.com> References: <20240930092631.2997543-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=198.175.65.21; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.095, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Per spec 6.5.2.4, PADID-selective PASID-based iotlb invalidation will flush stage-2 iotlb entries with matching domain id and pasid. With scalable modern mode introduced, guest could send PASID-selective PASID-based iotlb invalidation to flush both stage-1 and stage-2 entries. By this chance, remove old IOTLB related definitions which were unused. Signed-off-by: Zhenzhong Duan Reviewed-by: Clément Mathieu--Drif Acked-by: Jason Wang --- hw/i386/intel_iommu_internal.h | 14 ++++-- hw/i386/intel_iommu.c | 88 +++++++++++++++++++++++++++++++++- 2 files changed, 96 insertions(+), 6 deletions(-) diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index d0f9d4589d..eec8090190 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -403,11 +403,6 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_IOTLB_AM(val) ((val) & 0x3fULL) #define VTD_INV_DESC_IOTLB_RSVD_LO 0xffffffff0000f100ULL #define VTD_INV_DESC_IOTLB_RSVD_HI 0xf80ULL -#define VTD_INV_DESC_IOTLB_PASID_PASID (2ULL << 4) -#define VTD_INV_DESC_IOTLB_PASID_PAGE (3ULL << 4) -#define VTD_INV_DESC_IOTLB_PASID(val) (((val) >> 32) & VTD_PASID_ID_MASK) -#define VTD_INV_DESC_IOTLB_PASID_RSVD_LO 0xfff00000000001c0ULL -#define VTD_INV_DESC_IOTLB_PASID_RSVD_HI 0xf80ULL /* Mask for Device IOTLB Invalidate Descriptor */ #define VTD_INV_DESC_DEVICE_IOTLB_ADDR(val) ((val) & 0xfffffffffffff000ULL) @@ -433,6 +428,15 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_SPTE_LPAGE_L3_RSVD_MASK(aw) \ (0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM)) +/* Masks for PIOTLB Invalidate Descriptor */ +#define VTD_INV_DESC_PIOTLB_G (3ULL << 4) +#define VTD_INV_DESC_PIOTLB_ALL_IN_PASID (2ULL << 4) +#define VTD_INV_DESC_PIOTLB_PSI_IN_PASID (3ULL << 4) +#define VTD_INV_DESC_PIOTLB_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK) +#define VTD_INV_DESC_PIOTLB_PASID(val) (((val) >> 32) & 0xfffffULL) +#define VTD_INV_DESC_PIOTLB_RSVD_VAL0 0xfff000000000f1c0ULL +#define VTD_INV_DESC_PIOTLB_RSVD_VAL1 0xf80ULL + /* Information about page-selective IOTLB invalidate */ struct VTDIOTLBPageInvInfo { uint16_t domain_id; diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 9e6ef0cb99..72c9c91d4f 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2656,6 +2656,86 @@ static bool vtd_process_iotlb_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) return true; } +static gboolean vtd_hash_remove_by_pasid(gpointer key, gpointer value, + gpointer user_data) +{ + VTDIOTLBEntry *entry = (VTDIOTLBEntry *)value; + VTDIOTLBPageInvInfo *info = (VTDIOTLBPageInvInfo *)user_data; + + return ((entry->domain_id == info->domain_id) && + (entry->pasid == info->pasid)); +} + +static void vtd_piotlb_pasid_invalidate(IntelIOMMUState *s, + uint16_t domain_id, uint32_t pasid) +{ + VTDIOTLBPageInvInfo info; + VTDAddressSpace *vtd_as; + VTDContextEntry ce; + + info.domain_id = domain_id; + info.pasid = pasid; + + vtd_iommu_lock(s); + g_hash_table_foreach_remove(s->iotlb, vtd_hash_remove_by_pasid, + &info); + vtd_iommu_unlock(s); + + QLIST_FOREACH(vtd_as, &s->vtd_as_with_notifiers, next) { + if (!vtd_dev_to_context_entry(s, pci_bus_num(vtd_as->bus), + vtd_as->devfn, &ce) && + domain_id == vtd_get_domain_id(s, &ce, vtd_as->pasid)) { + uint32_t rid2pasid = VTD_CE_GET_RID2PASID(&ce); + + if ((vtd_as->pasid != PCI_NO_PASID || pasid != rid2pasid) && + vtd_as->pasid != pasid) { + continue; + } + + if (!s->scalable_modern) { + vtd_address_space_sync(vtd_as); + } + } + } +} + +static bool vtd_process_piotlb_desc(IntelIOMMUState *s, + VTDInvDesc *inv_desc) +{ + uint16_t domain_id; + uint32_t pasid; + + if ((inv_desc->val[0] & VTD_INV_DESC_PIOTLB_RSVD_VAL0) || + (inv_desc->val[1] & VTD_INV_DESC_PIOTLB_RSVD_VAL1) || + inv_desc->val[2] || inv_desc->val[3]) { + error_report_once("%s: invalid piotlb inv desc val[3]=0x%"PRIx64 + " val[2]=0x%"PRIx64" val[1]=0x%"PRIx64 + " val[0]=0x%"PRIx64" (reserved bits unzero)", + __func__, inv_desc->val[3], inv_desc->val[2], + inv_desc->val[1], inv_desc->val[0]); + return false; + } + + domain_id = VTD_INV_DESC_PIOTLB_DID(inv_desc->val[0]); + pasid = VTD_INV_DESC_PIOTLB_PASID(inv_desc->val[0]); + switch (inv_desc->val[0] & VTD_INV_DESC_PIOTLB_G) { + case VTD_INV_DESC_PIOTLB_ALL_IN_PASID: + vtd_piotlb_pasid_invalidate(s, domain_id, pasid); + break; + + case VTD_INV_DESC_PIOTLB_PSI_IN_PASID: + break; + + default: + error_report_once("%s: invalid piotlb inv desc: hi=0x%"PRIx64 + ", lo=0x%"PRIx64" (type mismatch: 0x%llx)", + __func__, inv_desc->val[1], inv_desc->val[0], + inv_desc->val[0] & VTD_INV_DESC_IOTLB_G); + return false; + } + return true; +} + static bool vtd_process_inv_iec_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { @@ -2766,6 +2846,13 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) } break; + case VTD_INV_DESC_PIOTLB: + trace_vtd_inv_desc("p-iotlb", inv_desc.val[1], inv_desc.val[0]); + if (!vtd_process_piotlb_desc(s, &inv_desc)) { + return false; + } + break; + case VTD_INV_DESC_WAIT: trace_vtd_inv_desc("wait", inv_desc.hi, inv_desc.lo); if (!vtd_process_wait_desc(s, &inv_desc)) { @@ -2793,7 +2880,6 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) * iommu driver) work, just return true is enough so far. */ case VTD_INV_DESC_PC: - case VTD_INV_DESC_PIOTLB: if (s->scalable_mode) { break; }