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Message-ID: <Y1aw7L5IdpjFpQvw@infradead.org> Date: Mon, 24 Oct 2022 08:36:12 -0700 From: Christoph Hellwig <hch@...radead.org> To: Michael Kelley <mikelley@...rosoft.com> Cc: hpa@...or.com, kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com, luto@...nel.org, peterz@...radead.org, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, lpieralisi@...nel.org, robh@...nel.org, kw@...ux.com, bhelgaas@...gle.com, arnd@...db.de, hch@...radead.org, m.szyprowski@...sung.com, robin.murphy@....com, thomas.lendacky@....com, brijesh.singh@....com, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com, Tianyu.Lan@...rosoft.com, kirill.shutemov@...ux.intel.com, sathyanarayanan.kuppuswamy@...ux.intel.com, ak@...ux.intel.com, isaku.yamahata@...el.com, dan.j.williams@...el.com, jane.chu@...cle.com, seanjc@...gle.com, tony.luck@...el.com, x86@...nel.org, linux-kernel@...r.kernel.org, linux-hyperv@...r.kernel.org, netdev@...r.kernel.org, linux-pci@...r.kernel.org, linux-arch@...r.kernel.org, iommu@...ts.linux.dev Subject: Re: [PATCH 06/12] swiotlb: Remove bounce buffer remapping for Hyper-V On Thu, Oct 20, 2022 at 10:57:09AM -0700, 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 <mikelley@...rosoft.com> I'm more than glad that we can kill this code: Acked-by: Christoph Hellwig <hch@....de>
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