Alexandre Ghiti c4a05cf0ed mm: Introduce flush_cache_vmap_early() ... [ Upstream commit 7a92fc8b4d ] The pcpu setup when using the page allocator sets up a new vmalloc mapping very early in the boot process, so early that it cannot use the flush_cache_vmap() function which may depend on structures not yet initialized (for example in riscv, we currently send an IPI to flush other cpus TLB). But on some architectures, we must call flush_cache_vmap(): for example, in riscv, some uarchs can cache invalid TLB entries so we need to flush the new established mapping to avoid taking an exception. So fix this by introducing a new function flush_cache_vmap_early() which is called right after setting the new page table entry and before accessing this new mapping. This new function implements a local flush tlb on riscv and is no-op for other architectures (same as today). Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Dennis Zhou <dennis@kernel.org> Stable-dep-of: d9807d60c1 ("riscv: mm: execute local TLB flush after populating vmemmap") Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-02-16 19:10:52 +01:00
..
boot	nios2: dts: Fix tse_mac "max-frame-size" property	2023-06-13 16:59:46 -05:00
configs	treewide: drop CONFIG_EMBEDDED	2023-08-21 13:46:25 -07:00
include	mm: Introduce flush_cache_vmap_early()	2024-02-16 19:10:52 +01:00
kernel	nios2: Replace all non-returning strlcpy with strscpy	2023-06-13 16:51:49 -05:00
lib	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
mm	nios2: fix flush_dcache_page() for usage from irq context	2023-08-24 16:20:31 -07:00
platform	nios2: Make NIOS2_DTB_SOURCE_BOOL depend on !COMPILE_TEST	2021-10-27 09:29:07 -05:00
Kbuild	nios2: move core-y in arch/nios2/Makefile to arch/nios2/Kbuild	2022-09-29 04:40:14 +09:00
Kconfig	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-06-24 14:12:58 -07:00
Kconfig.debug	NIOS2: fix kconfig unmet dependency warning for SERIAL_CORE_CONSOLE	2021-09-24 08:49:39 -05:00
Makefile	kbuild: remove head-y syntax	2022-10-02 18:06:03 +09:00