vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _MEMREGION_H_
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#define _MEMREGION_H_
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/range.h>
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#include <linux/bug.h>
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struct memregion_info {
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int target_node;
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struct range range;
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};
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#ifdef CONFIG_MEMREGION
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int memregion_alloc(gfp_t gfp);
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void memregion_free(int id);
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#else
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static inline int memregion_alloc(gfp_t gfp)
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{
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return -ENOMEM;
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}
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static inline void memregion_free(int id)
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{
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}
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#endif
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/**
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* cpu_cache_invalidate_memregion - drop any CPU cached data for
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* memregion
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* @start: start physical address of the target memory region.
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* @len: length of the target memory region. -1 for all the regions of
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* the target type.
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*
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* Perform cache maintenance after a memory event / operation that
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* changes the contents of physical memory in a cache-incoherent manner.
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* For example, device memory technologies like NVDIMM and CXL have
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* device secure erase, and dynamic region provision that can replace
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* the memory mapped to a given physical address.
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*
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* Limit the functionality to architectures that have an efficient way
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* to writeback and invalidate potentially terabytes of address space at
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* once. Note that this routine may or may not write back any dirty
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* contents while performing the invalidation. It is only exported for
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* the explicit usage of the NVDIMM and CXL modules in the 'DEVMEM'
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* symbol namespace on bare platforms.
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*
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* Returns 0 on success or negative error code on a failure to perform
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* the cache maintenance.
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*/
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#ifdef CONFIG_ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION
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int cpu_cache_invalidate_memregion(phys_addr_t start, size_t len);
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bool cpu_cache_has_invalidate_memregion(void);
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#else
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static inline bool cpu_cache_has_invalidate_memregion(void)
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{
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return false;
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}
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static inline int cpu_cache_invalidate_memregion(phys_addr_t start, size_t len)
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{
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WARN_ON_ONCE("CPU cache invalidation required");
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return -ENXIO;
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}
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#endif
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static inline int cpu_cache_invalidate_all(void)
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{
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return cpu_cache_invalidate_memregion(0, -1);
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}
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#endif /* _MEMREGION_H_ */
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