kernel.git/arch/riscv/include/asm/vmalloc.h, branch linux-6.4.y

riscv: mm: support Svnapot in huge vmap

2023-03-08T03:39:17Z

As HAVE_ARCH_HUGE_VMAP and HAVE_ARCH_HUGE_VMALLOC is supported, we can implement arch_vmap_pte_range_map_size and arch_vmap_pte_supported_shift for Svnapot to support huge vmap about napot size. It can be tested by huge vmap used in pci driver. Huge vmalloc with svnapot can be tested by test_vmalloc with [1] applied, and probe this module to run fix_size_alloc_test with use_huge true. [1]https://lore.kernel.org/all/20221212055657.698420-1-panqinglin2020@iscas.ac.cn/ Signed-off-by: Qinglin Pan Reviewed-by: Andrew Jones Acked-by: Conor Dooley Link: https://lore.kernel.org/r/20230209131647.17245-4-panqinglin00@gmail.com Signed-off-by: Palmer Dabbelt

riscv: Enable HAVE_ARCH_HUGE_VMAP for 64BIT

2022-10-29T00:10:01Z

This sets the HAVE_ARCH_HUGE_VMAP option, and defines the required page table functions. With this feature, ioremap area will be mapped with huge page granularity according to its actual size. This feature can be disabled by kernel parameter "nohugeiomap". Signed-off-by: Liu Shixin Reviewed-by: Björn Töpel Tested-by: Björn Töpel Link: https://lore.kernel.org/r/20221012120038.1034354-2-liushixin2@huawei.com [Palmer: minor formatting] Signed-off-by: Palmer Dabbelt

mm/vmalloc: Add empty headers and use them from

2019-12-10T09:12:55Z

In the x86 MM code we'd like to untangle various types of historic header dependency spaghetti, but for this we'd need to pass to the generic vmalloc code various vmalloc related defines that customarily come via the low level arch header. Signed-off-by: Ingo Molnar