From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes Skip the xarray reservation loop when clearing all memory attributes, as storing NULL only erases the entry and never needs to allocate, so no reservation (and no cleanup of a failed one) is required in that case. Suggested-by: Sean Christopherson Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- tools/testing/memblock/internal.h | 54 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 tools/testing/memblock/internal.h (limited to 'tools/testing/memblock/internal.h') diff --git a/tools/testing/memblock/internal.h b/tools/testing/memblock/internal.h new file mode 100644 index 000000000..f1974e009 --- /dev/null +++ b/tools/testing/memblock/internal.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _MM_INTERNAL_H +#define _MM_INTERNAL_H + +/* + * Enable memblock_dbg() messages + */ +#ifdef MEMBLOCK_DEBUG +static int memblock_debug = 1; +#endif + +#define pr_warn_ratelimited(fmt, ...) printf(fmt, ##__VA_ARGS__) + +#define K(x) ((x) << (PAGE_SHIFT-10)) + +bool mirrored_kernelcore = false; + +struct page {}; +static inline void *page_address(struct page *page) +{ + BUG(); + return page; +} + +static inline struct page *virt_to_page(void *virt) +{ + BUG(); + return virt; +} + +#define for_each_valid_pfn(pfn, start_pfn, end_pfn) \ + for ((pfn) = (start_pfn); (pfn) < (end_pfn); (pfn)++) + +static inline void *kasan_reset_tag(const void *addr) +{ + return (void *)addr; +} + +static inline bool __is_kernel(unsigned long addr) +{ + return false; +} + +#define for_each_valid_pfn(pfn, start_pfn, end_pfn) \ + for ((pfn) = (start_pfn); (pfn) < (end_pfn); (pfn)++) + +#define __SetPageReserved(p) ((void)(p)) + +static inline bool kho_scratch_overlap(phys_addr_t phys, size_t size) +{ + return false; +} + +#endif -- cgit v1.3.1