Flush_icache_range

Author: grko

August undefined, 2024

WebFeb 28, 2024 · From: Jinyang He <> Subject [PATCH v2 4/6] LoongArch: Drop pernode exception handlers: Date: Tue, 28 Feb 2024 16:02:55 +0800 WebMar 15, 2024 · All the functionality of flush_icache_page can be implemented in - flush_dcache_page and update_mmu_cache. In the future, the hope + flush_dcache_page and update_mmu_cache_range. In the future, the hope is to remove this interface completely. The final category of APIs is for I/O to deliberately aliased address

Documentation – Arm Developer

Webcacheflush() flushes the contents of the indicated cache(s) for the user addresses in the range addr to (addr+nbytes-1). cache may be one of: ICACHE Flush the instruction … WebRoughly “cache flushing” means writing what’s in the cache out to memory (or simply cache data goes to memory) whereas “cache invalidating” means subsequently assuming all … how to stop keg from foaming

cacheflush(2) - Linux man page - die.net

Webupdate a global variable __dcache_flags. The two functions __flush_cache_user_range () and __clean_dcache_area_pou () are modified to skip an unnecessary code execution … WebMay 10, 2024 · On Tue, May 12, 2024 at 04:00:26PM -0700, Palmer Dabbelt wrote: > Reviewed-by: Palmer Dabbelt > Acked-by: Palmer Dabbelt > > Were you trying to get these all in at once, or do you want me to take it into > my tree? Except for the small fixups at the beginning of the … Webcacheflush () flushes the contents of the indicated cache (s) for the user addresses in the range addr to (addr+nbytes-1). cache may be one of: ICACHE Flush the instruction … read and understand pdf

[1/1] arm64: fix flush_cache_range - Patchwork - Linux kernel

sort out the flush_icache_range mess

Web* flush_user_range (start, end, flags) * * Clean and invalidate a range of cache entries in the * specified address space before a change of page tables. * - start - user start address (inclusive, page aligned) * - end - user end address (exclusive, page aligned) * - flags - vma->vm_flags field * * coherent_kern_range (start, end) * WebMar 15, 2024 · - flush_icache_range (addr, addr + page_size (page)); - set_bit (PG_arch_1, &page->flags); /* mark page as clean */ + flush_icache_range (addr, addr … read and understand formWebMay 11, 2024 · To be consistent with other functions with similar names and functionality in cacheflush.h, cache.S, and cachetlb.rst, change to specify the range in terms of start and end, as opposed to start and size. No functional change intended. read and understand synonym

"WebMar 29, 2024 · flush_icache_range() takes a range of addresses to flush. In flush_coherent_icache() we implement an optimisation for CPUs where we know we don't actually have to flush the whole range, we just need to do a single icbi. However we still execute the icbi on the user address of the start of the range we're flushing. " - Flush_icache_range

Flush_icache_range

LKML: "Arnd Bergmann": Re: [PATCH 20/21] ARM: dma-mapping: …

WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH 1/3] MIPS: mm: Remove unused *cache_page_indexed flush functions @ 2024-04-03 9:41 Thomas Bogendoerfer 2024-04-03 9:41 ` [PATCH 2/3] MIPS: Remove no longer used ide.h Thomas Bogendoerfer ` (2 more replies) 0 siblings, 3 replies; 6+ messages in thread From: … Webflush_cache_range () is primarily used on VIVT caches before changing the mapping and should not really be implemented on arm64. I don't recall why we still have the I-cache invalidation, possibly for the ASID-tagged VIVT I-cache case, though we should have a specific check for this.

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WebFeb 27, 2024 · Add set_ptes () and update_mmu_cache_range (). It would probably be more efficient to implement __update_tlb () by flushing the entire folio instead of calling it __update_tlb () N times, but I'll leave that for someone who understands the architecture better. Signed-off-by: Matthew Wilcox (Oracle) Web* flush_dcache_page is used when the kernel has written to the page * cache page at virtual address page->virtual. * * If this page isn't mapped (ie, page_mapping == NULL), or it …

Webdeclared in cacheflush.h and defined in cache.S. To compile my custom kernel module, I need to link it with the kernel object file cache.o produced by PetaLinux 2024.2 during kernel compilation (from the assembly file cache.S). Now, the problem is that this file cache.o contains undefined symbols. WebThis series first cleans up the cacheflush implementations, largely by switching as much as possible to the asm-generic version after a few preparations, then moves the misnamed …

WebJan 17, 2003 · - If dcaches are not writeback, dhwbi equals dhi, etc. - When flushing a range in the icache, we have to first writeback the dcache for the same range, so new ifetches will see any data that was dirty in the dcache. */ /* XTFIXME: Compare against arch/mips/mm/r4xx0.c, which has extensive tests before deciding to flush anything. WebIn theory, we can @@ -89,9 +89,9 @@ static inline void flush_icache_range(unsigned long start, unsigned long end) * the patching operation, so we don't need extra IPIs here anyway. * In which case, add a KGDB-specific bodge and return early.

WebNov 12, 2024 · > + * flush_icache_range: Write any modified data cache blocks out to memory > + * and invalidate the corresponding blocks in the instruction cache > + * …

WebThe IPI1 were raised by flush_icache_range in bpf_int_jit_compile(). Futher, the calling of it was introduced in 3b8c9f1cdfc5("arm64: IPI each CPU after invalidating the I-cache for kernel mappings"), then I found the bpf case seems no need this operation. read and type in wordWebcacheflush.h - arch/arm/include/asm/cacheflush.h - Linux source code (v6.2.2) - Bootlin. Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the … how to stop ken burns effect imovieWebvoid flush_icache_range(unsigned long start, unsigned long end) When the kernel stores into addresses that it will execute out of (eg when loading modules), this function is called. ... All the functionality of flush_icache_page can be implemented in flush_dcache_page and update_mmu_cache. In the future, the hope is to remove this interface ... read and understand instruction manual signWebFrom: Thomas Bogendoerfer To: [email protected], [email protected] Subject: [PATCH 3/3] MIPS: mm: Remove local_cache_flush_page Date: Mon, 3 Apr 2024 11:41:12 +0200 [thread overview] Message-ID: <[email protected]> () In-Reply-To: … how to stop keloid itchingWeb* flush_icache_user_range is used when we want to ensure that the * Harvard caches are synchronised for the user space address range. * This is used for the ARM private … how to stop kernel in jupyterWebflush_icache_user_range.) The reason for doing this is that when flush_icache_page is called from do_no_page or do_swap_page, I want to be able to do the flush … how to stop keppra read and understand with leveled texts pdf