From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3883ABA3E for ; Tue, 7 Mar 2023 17:34:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 968C9C433D2; Tue, 7 Mar 2023 17:34:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678210443; bh=6wMqLdSOYR3sPFJG6DLiR5hsLBzTh5UrPZMaujcHyS4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KHr2f2msx5/ZVfbqPapEp5Er4tQWJ7P1VJ2zrsRFyzZSKrY3jSRoN6yW12CTyo8OD XoHQyoebYTjaApIdvxZXUkYcKg2qDeABy0n57mUAZ8HFrRlfJWAveaEzHW+AARJsiL DtEYwecA8ED7bO2rO0wyR/WJfFTB0BndoKC+GvP8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ashok Raj , Lu Baolu , Kevin Tian , Joerg Roedel , Sasha Levin Subject: [PATCH 6.2 0542/1001] iommu/vt-d: Set No Execute Enable bit in PASID table entry Date: Tue, 7 Mar 2023 17:55:14 +0100 Message-Id: <20230307170044.975759598@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307170022.094103862@linuxfoundation.org> References: <20230307170022.094103862@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Lu Baolu [ Upstream commit e06d24435596c8afcaa81c0c498f5b0ec4ee2b7c ] Setup No Execute Enable bit (Bit 133) of a scalable mode PASID entry. This is to allow the use of XD bit of the first level page table. Fixes: ddf09b6d43ec ("iommu/vt-d: Setup pasid entries for iova over first level") Signed-off-by: Ashok Raj Signed-off-by: Lu Baolu Reviewed-by: Kevin Tian Link: https://lore.kernel.org/r/20230126095438.354205-1-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/intel/pasid.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c index fb3c7020028d0..ec964ac7d7972 100644 --- a/drivers/iommu/intel/pasid.c +++ b/drivers/iommu/intel/pasid.c @@ -364,6 +364,16 @@ static inline void pasid_set_page_snoop(struct pasid_entry *pe, bool value) pasid_set_bits(&pe->val[1], 1 << 23, value << 23); } +/* + * Setup No Execute Enable bit (Bit 133) of a scalable mode PASID + * entry. It is required when XD bit of the first level page table + * entry is about to be set. + */ +static inline void pasid_set_nxe(struct pasid_entry *pe) +{ + pasid_set_bits(&pe->val[2], 1 << 5, 1 << 5); +} + /* * Setup the Page Snoop (PGSNP) field (Bit 88) of a scalable mode * PASID entry. @@ -557,6 +567,7 @@ int intel_pasid_setup_first_level(struct intel_iommu *iommu, pasid_set_domain_id(pte, did); pasid_set_address_width(pte, iommu->agaw); pasid_set_page_snoop(pte, !!ecap_smpwc(iommu->ecap)); + pasid_set_nxe(pte); /* Setup Present and PASID Granular Transfer Type: */ pasid_set_translation_type(pte, PASID_ENTRY_PGTT_FL_ONLY); -- 2.39.2