Some systems, e.g., HiSilicon KunPeng920 and KunPeng930, have devices that appear as PCI but are actually on the AMBA bus. Some of these fake PCI devices support a PASID-like feature and they do have a working PASID capability even though they do not use the PCIe Transport Layer Protocol and do not support TLP prefixes. Add a pasid_no_tlp bit for this "PASID works without TLP prefixes" case and update pci_enable_pasid() so it can enable PASID on these devices. Set this bit for HiSilicon KunPeng920 and KunPeng930. [bhelgaas: squashed, commit log] Suggested-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/1626144876-11352-2-git-send-email-zhangfei.gao@linaro.org Link: https://lore.kernel.org/r/1626144876-11352-3-git-send-email-zhangfei.gao@linaro.org Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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