From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@lst.de>
Date: Tue, 01 Mar 2022 10:52:59 +0000
Subject: cleanup swiotlb initialization v4
Message-Id: <20220301105311.885699-1-hch@lst.de>
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To: iommu@lists.linux-foundation.org
Cc: x86@kernel.org, Anshuman Khandual <anshuman.khandual@arm.com>, Tom Lendacky <thomas.lendacky@amd.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Stefano Stabellini <sstabellini@kernel.org>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Juergen Gross <jgross@suse.com>, Joerg Roedel <joro@8bytes.org>, David Woodhouse <dwmw2@infradead.org>, Lu Baolu <baolu.lu@linux.intel.com>, Robin Murphy <robin.murphy@arm.com>, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-hyperv@vger.kernel.org, tboot-devel@lists.sourceforge.net, linux-pci@vger.kernel.org

Hi all,

this series tries to clean up the swiotlb initialization, including
that of swiotlb-xen.  To get there is also removes the x86 iommu table
infrastructure that massively obsfucates the initialization path.

Git tree:

    git://git.infradead.org/users/hch/misc.git swiotlb-init-cleanup

Gitweb:

    http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/swiotlb-init-cleanup

Changes since v3:
 - fix a compilation issue on some powerpc configfs
 - fix and cleanup how forced bounce buffering is enabled for
   guest memory encryption

Changes since v2:
 - make ppc_swiotlb_flags actually work again
 - also force enable swiotlb for guest encrypted memory to cater
   to hyperv which doesn't set the host encrypted memory flag

Changes since v1:
 - skip IOMMU initialization on Xen PV kernels
 - various small whitespace / typo fixes

Diffstat: