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[23.128.96.18]) by mx.google.com with ESMTP id 1si5237613plg.28.2022.01.31.03.34.58; Mon, 31 Jan 2022 03:35:08 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=XKs8FwdY; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351266AbiA1U3a (ORCPT + 99 others); Fri, 28 Jan 2022 15:29:30 -0500 Received: from mga02.intel.com ([134.134.136.20]:61402 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351189AbiA1U3X (ORCPT ); Fri, 28 Jan 2022 15:29:23 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643401763; x=1674937763; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Bqxtojtmx5tWusYvxR//2iaQnYjgCUiRMbM+LXacmWg=; b=XKs8FwdYe8GPtgq0CZ8O01d/+EKkABzUde4lnEz6PGPxuQfnazpATNZv BrECuxMoBLHPO2EdOfojyv4sRYFmEslYfDCmOyItPnkyE3A/anbHidQXK vMidY0Jw/wq3+HSdRgfCNy7ZQXvS2oZxudy9DqCIKrQzbznw4U+fwySRj kdDGjJMoUhpcBoyYFdgW2aA+PZzpGmvFI+6/kO/LFPvAvNqtUwARWVIQ6 /rZfYFFlEM6O8l0z8zNLB3ZmQti4cfEVKI5VKqcJTxLoN82n+7u4csg+f +LY3ngU5ASO5lPY5tzejYXv+W3+HSvm6BjSDsWQ9K3/j74PRj3NAd+eEd g==; X-IronPort-AV: E=McAfee;i="6200,9189,10241"; a="234578002" X-IronPort-AV: E=Sophos;i="5.88,324,1635231600"; d="scan'208";a="234578002" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2022 12:29:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,324,1635231600"; d="scan'208";a="618827694" Received: from otcwcpicx3.sc.intel.com ([172.25.55.73]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jan 2022 12:29:22 -0800 From: Fenghua Yu To: "Thomas Gleixner" , "Dave Hansen" , "Ingo Molnar" , "Borislav Petkov" , "Peter Zijlstra" , "Andy Lutomirski" , "Tony Luck" , "Lu Baolu" , "Joerg Roedel" , Josh Poimboeuf , "Jacob Pan" , "Ashok Raj" , "Ravi V Shankar" Cc: iommu@lists.linux-foundation.org, "x86" , "linux-kernel" , Fenghua Yu Subject: [PATCH v3 03/11] iommu/ioasid: Introduce a helper to check for valid PASIDs Date: Fri, 28 Jan 2022 12:28:57 -0800 Message-Id: <20220128202905.2274672-4-fenghua.yu@intel.com> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20220128202905.2274672-1-fenghua.yu@intel.com> References: <20220128202905.2274672-1-fenghua.yu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org pasid_valid() is defined to check if a given PASID is valid. Suggested-by: Ashok Raj Suggested-by: Jacob Pan Signed-off-by: Fenghua Yu Reviewed-by: Tony Luck --- v2: - Define a helper pasid_valid() (Ashok, Jacob, Thomas, Tony) include/linux/ioasid.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/ioasid.h b/include/linux/ioasid.h index e9dacd4b9f6b..2237f64dbaae 100644 --- a/include/linux/ioasid.h +++ b/include/linux/ioasid.h @@ -41,6 +41,10 @@ void *ioasid_find(struct ioasid_set *set, ioasid_t ioasid, int ioasid_register_allocator(struct ioasid_allocator_ops *allocator); void ioasid_unregister_allocator(struct ioasid_allocator_ops *allocator); int ioasid_set_data(ioasid_t ioasid, void *data); +static inline bool pasid_valid(ioasid_t ioasid) +{ + return ioasid != INVALID_IOASID; +} #else /* !CONFIG_IOASID */ static inline ioasid_t ioasid_alloc(struct ioasid_set *set, ioasid_t min, @@ -78,5 +82,10 @@ static inline int ioasid_set_data(ioasid_t ioasid, void *data) return -ENOTSUPP; } +static inline bool pasid_valid(ioasid_t ioasid) +{ + return false; +} + #endif /* CONFIG_IOASID */ #endif /* __LINUX_IOASID_H */ -- 2.35.0