Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=linux-7.0.y 2022-10-12T08:36:14+00:00 2022-10-12T08:36:14+00:00 Huacai Chen chenhuacai@loongson.cn 2022-10-12T08:36:14+00:00 urn:sha1:d279134168c78ac2caa1f7cd2a846579da1c93ac We can support more cache attributes (e.g., CC, SUC and WUC) and page protection when we use TLB for ioremap(). The implementation is based on GENERIC_IOREMAP. The existing simple ioremap() implementation has better performance so we keep it and introduce ARCH_IOREMAP to control the selection. We move pagetable_init() earlier to make early ioremap() works, and we modify the PCI ecam mapping because the TLB-based version of ioremap() will actually take the size into account. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> 2022-06-03T12:09:28+00:00 Huacai Chen chenhuacai@loongson.cn 2022-05-31T10:04:11+00:00 urn:sha1:09cfefb7fa70c3af011b0db0a513fd80b2f18abc Add memory management support for LoongArch, including: cache and tlb management, page fault handling and ioremap/mmap support. Reviewed-by: WANG Xuerui <git@xen0n.name> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>