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| Filename | Latest commit message | Latest commit date |
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8dc6cca556
This removes the dependence of KVM on the mmu_psize_defs array (which stores information about hardware support for various page sizes) and the things derived from it, chiefly hpte_page_sizes[], hpte_page_size(), hpte_actual_page_size() and get_sllp_encoding(). We also no longer rely on the mmu_slb_size variable or the MMU_FTR_1T_SEGMENTS feature bit. The reason for doing this is so we can support a HPT guest on a radix host. In a radix host, the mmu_psize_defs array contains information about page sizes supported by the MMU in radix mode rather than the page sizes supported by the MMU in HPT mode. Similarly, mmu_slb_size and the MMU_FTR_1T_SEGMENTS bit are not set. Instead we hard-code knowledge of the behaviour of the HPT MMU in the POWER7, POWER8 and POWER9 processors (which are the only processors supported by HV KVM) - specifically the encoding of the LP fields in the HPT and SLB entries, and the fact that they have 32 SLB entries and support 1TB segments. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.