linux-kernel - unexport swiotlb

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Date:   Mon, 12 Jun 2023 16:25:39 +0200
From:   Christoph Hellwig <hch@....de>
To:     Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     xen-devel@...ts.xenproject.org, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: unexport swiotlb_active v2

Hi all,

this little series removes the last swiotlb API exposed to modules.

Changes since v1:
 - add a patch from Juergen to export if the e820 table indicates Xen PV
   PCI is enabled
 - slightly reorganize the logic to check if swiotlb is needed for
   Xen/x86
 - drop the already merged nouveau patch

Diffstat:
 arch/x86/include/asm/xen/swiotlb-xen.h |    6 ------
 arch/x86/kernel/pci-dma.c              |   29 +++++++----------------------
 arch/x86/xen/setup.c                   |    6 ++++++
 drivers/pci/xen-pcifront.c             |    6 ------
 include/xen/xen.h                      |    6 ++++++
 kernel/dma/swiotlb.c                   |    1 -
 6 files changed, 19 insertions(+), 35 deletions(-)