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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 7A5CACCD194 for ; Thu, 16 Oct 2025 07:47:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v9Ign-00022S-Lz; Thu, 16 Oct 2025 03:46:21 -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 1v9Igh-0001vj-0Q for qemu-devel@nongnu.org; Thu, 16 Oct 2025 03:46:16 -0400 Received: from mgamail.intel.com ([192.198.163.15]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1v9Ige-0005Nc-WE for qemu-devel@nongnu.org; Thu, 16 Oct 2025 03:46:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1760600773; x=1792136773; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=D2e+ESwtLZs18uXR9FupPKhFMkUPPRdSzpQnflsXbK8=; b=JSRdY2XNnkEPy/jDUBukjCYAf7TvP/mu1uxjTXIqwVJ9mptbDIqMEKaE 3enD/W12x+zGXaoYc5QDJ8vWlpUAWIkXJ0kf9t6jPR0Fb0aXERDhIHhz1 CF4R6ZZ1SE+rHOnpTardwCx2UGj7XE08pUYyLCalWYmYAvOW2K9zq4Kax 6eLYRLuud+ywq7rX3VRYR3ot8gVSIV6d2H+0Y9UZ18ht+D9CHJRIbIfrO LKhDADfToTy/cAwTifm83SAugBYyuaH5FhKjw1zQyC6DWT8wZy+rLXfad pyn7FYpO+SLjbGsUEEWO+61+cdwqFZzO6OTsS3s2FcLG4vHXOCL3a40ZA w==; X-CSE-ConnectionGUID: 2cce/H4zTUCvTf7iCjsV1Q== X-CSE-MsgGUID: 8QiXy//iT821+Un4HNPCxQ== X-IronPort-AV: E=McAfee;i="6800,10657,11583"; a="62879145" X-IronPort-AV: E=Sophos;i="6.19,233,1754982000"; d="scan'208";a="62879145" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2025 00:46:03 -0700 X-CSE-ConnectionGUID: oMW0J+SrTcGgTl4En4+7QQ== X-CSE-MsgGUID: u99WdQcUQJaRn5sXbcvaZQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,233,1754982000"; d="scan'208";a="182177524" Received: from unknown (HELO gnr-sp-2s-612.sh.intel.com) ([10.112.230.229]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2025 00:46:01 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, yi.l.liu@intel.com, clement.mathieu--drif@eviden.com, Zhenzhong Duan Subject: [PATCH v2 2/3] intel_iommu: Reset pasid cache when system level reset Date: Thu, 16 Oct 2025 03:45:43 -0400 Message-ID: <20251016074544.377637-3-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20251016074544.377637-1-zhenzhong.duan@intel.com> References: <20251016074544.377637-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.15; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Reset pasid cache when system level reset. Currently we don't have any device supporting PASID yet. So all are PASID_0, its vtd_as is allocated by PCI system and never removed, just mark pasid cache invalid. Signed-off-by: Yi Liu Signed-off-by: Zhenzhong Duan --- hw/i386/intel_iommu.c | 16 ++++++++++++++++ hw/i386/trace-events | 1 + 2 files changed, 17 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index c47f13b659..07bc0a749c 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -87,6 +87,21 @@ struct vtd_iotlb_key { static void vtd_address_space_refresh_all(IntelIOMMUState *s); static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n); +static void vtd_pasid_cache_reset_locked(IntelIOMMUState *s) +{ + VTDAddressSpace *vtd_as; + GHashTableIter as_it; + + trace_vtd_pasid_cache_reset(); + + g_hash_table_iter_init(&as_it, s->vtd_address_spaces); + while (g_hash_table_iter_next(&as_it, NULL, (void **)&vtd_as)) { + VTDPASIDCacheEntry *pc_entry = &vtd_as->pasid_cache_entry; + pc_entry->valid = false; + } +} + + static void vtd_define_quad(IntelIOMMUState *s, hwaddr addr, uint64_t val, uint64_t wmask, uint64_t w1cmask) { @@ -381,6 +396,7 @@ static void vtd_reset_caches(IntelIOMMUState *s) vtd_iommu_lock(s); vtd_reset_iotlb_locked(s); vtd_reset_context_cache_locked(s); + vtd_pasid_cache_reset_locked(s); vtd_iommu_unlock(s); } diff --git a/hw/i386/trace-events b/hw/i386/trace-events index 298addb24d..b704f4f90c 100644 --- a/hw/i386/trace-events +++ b/hw/i386/trace-events @@ -24,6 +24,7 @@ vtd_inv_qi_head(uint16_t head) "read head %d" vtd_inv_qi_tail(uint16_t head) "write tail %d" vtd_inv_qi_fetch(void) "" vtd_context_cache_reset(void) "" +vtd_pasid_cache_reset(void) "" vtd_inv_desc_pasid_cache_gsi(void) "" vtd_inv_desc_pasid_cache_dsi(uint16_t domain) "Domain selective PC invalidation domain 0x%"PRIx16 vtd_inv_desc_pasid_cache_psi(uint16_t domain, uint32_t pasid) "PASID selective PC invalidation domain 0x%"PRIx16" pasid 0x%"PRIx32 -- 2.47.1