From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.skyhub.de (mail.skyhub.de [5.9.137.197]) (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 0AD223D64 for ; Mon, 9 Jan 2023 18:05:33 +0000 (UTC) Received: from zn.tnic (p5de8e9fe.dip0.t-ipconnect.de [93.232.233.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id AB1891EC0104; Mon, 9 Jan 2023 19:05:31 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1673287531; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=XBiZaY8u/xswQXku80iay8s8oLX/++H7HyqUoTlyF68=; b=kcAdnQBIIy7MSK2sQNbH9rDC7UYggpUWp+SUKhbFXMbLFwt9+GLk4C19RGTuIy7szr7sPK cptGfbWN0EH4V+NeGAnuUqDIBMeAeuq00m5Rcn2aM0Rp0sno1bVKd8zzl3BTThGv6ET/Qm BDMmgGyHmVJp9Fh7DX2vXSPjXYEXZZM= Date: Mon, 9 Jan 2023 19:05:27 +0100 From: Borislav Petkov To: Michael Kelley Cc: hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, luto@kernel.org, peterz@infradead.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, lpieralisi@kernel.org, robh@kernel.org, kw@linux.com, bhelgaas@google.com, arnd@arndb.de, hch@infradead.org, m.szyprowski@samsung.com, robin.murphy@arm.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, Tianyu.Lan@microsoft.com, kirill.shutemov@linux.intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, ak@linux.intel.com, isaku.yamahata@intel.com, dan.j.williams@intel.com, jane.chu@oracle.com, seanjc@google.com, tony.luck@intel.com, x86@kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org, iommu@lists.linux.dev Subject: Re: [Patch v4 07/13] swiotlb: Remove bounce buffer remapping for Hyper-V Message-ID: References: <1669951831-4180-1-git-send-email-mikelley@microsoft.com> <1669951831-4180-8-git-send-email-mikelley@microsoft.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1669951831-4180-8-git-send-email-mikelley@microsoft.com> On Thu, Dec 01, 2022 at 07:30:25PM -0800, Michael Kelley wrote: > With changes to how Hyper-V guest VMs flip memory between private > (encrypted) and shared (decrypted), creating a second kernel virtual > mapping for shared memory is no longer necessary. Everything needed > for the transition to shared is handled by set_memory_decrypted(). > > As such, remove swiotlb_unencrypted_base and the associated > code. > > Signed-off-by: Michael Kelley > Acked-by: Christoph Hellwig > --- > arch/x86/kernel/cpu/mshyperv.c | 7 +------ > include/linux/swiotlb.h | 2 -- > kernel/dma/swiotlb.c | 45 +----------------------------------------- > 3 files changed, 2 insertions(+), 52 deletions(-) Patches removing crap are always nice: Acked-by: Borislav Petkov (AMD) -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette