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Thu, 4 Jun 2026 08:43:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780562596; bh=ePeZTaXNJBx/2RYYA/AuIc3DdpRwUBlOsN24dG2IECQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Cgae1E98GtHsFcI4+E6f2e3cq2gB5ntC7mDmNNAmlcu5ofgb9Rubm286CJNZMNO10 qSFJCmn7ZFC61rYD6tfmuyK2Pzcg2VxIatIJe4OAZ5ves1nEMvLkEV/62k1e+xJ//b nXAAvIdPZbsJnOB0bCNBUOXCMcnl51t8XBadLEDJSbPxMoUwt9hpY2bJyOQRq7k+Tb ZXEo7XRzcFBuF2TBZpyM78U0taYt44WBdBG2MnDNlV5a6W/7EMKvsx0Rsg20fl8Xkz RFARCUaz4S8GDwUqoxWryHd722PxfNT5E8SHmtzPEgPvhIKK5O3G0JsyBaIGYbWz+8 DaVLcJHMYLEGQ== From: "Aneesh Kumar K.V (Arm)" To: iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev Cc: "Aneesh Kumar K.V (Arm)" , Robin Murphy , Marek Szyprowski , Will Deacon , Marc Zyngier , Steven Price , Suzuki K Poulose , Catalin Marinas , Jiri Pirko , Jason Gunthorpe , Mostafa Saleh , Petr Tesarik , Alexey Kardashevskiy , Dan Williams , Xu Yilun , linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , x86@kernel.org Subject: [PATCH v6 20/20] swiotlb: remove unused SWIOTLB_FORCE flag Date: Thu, 4 Jun 2026 14:09:59 +0530 Message-ID: <20260604083959.1265923-21-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260604083959.1265923-1-aneesh.kumar@kernel.org> References: <20260604083959.1265923-1-aneesh.kumar@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit SWIOTLB_FORCE has no remaining in-tree users. Forced bouncing is now controlled through the swiotlb=force command line option via swiotlb_force_bounce. Remove the unused flag and simplify the force_bounce initialization. Signed-off-by: Aneesh Kumar K.V (Arm) --- include/linux/swiotlb.h | 1 - kernel/dma/swiotlb.c | 3 +-- 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 526f82e9da45..af88ca7182f4 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -15,7 +15,6 @@ struct page; struct scatterlist; #define SWIOTLB_VERBOSE (1 << 0) /* verbose initialization */ -#define SWIOTLB_FORCE (1 << 1) /* force bounce buffering */ #define SWIOTLB_ANY (1 << 2) /* allow any memory for the buffer */ /* diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index e4bd8c9eaeda..81cc4928e949 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -400,8 +400,7 @@ void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags, if (swiotlb_force_disable) return; - io_tlb_default_mem.force_bounce = - swiotlb_force_bounce || (flags & SWIOTLB_FORCE); + io_tlb_default_mem.force_bounce = swiotlb_force_bounce; #ifdef CONFIG_SWIOTLB_DYNAMIC if (!remap) -- 2.43.0