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caa3cd5ccd
Since commit d08d4e7cd6 ("s390/mm: use full 4KB page for 2KB PTE"),
there is no longer any reason to avoid splitting the kfence pool into
4k mappings in arch_kfence_init_pool(). Remove the architecture-specific
kfence_split_mapping().
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
31 lines
734 B
C
31 lines
734 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_S390_KFENCE_H
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#define _ASM_S390_KFENCE_H
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#include <linux/mm.h>
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#include <linux/kfence.h>
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#include <asm/set_memory.h>
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#include <asm/page.h>
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void __kernel_map_pages(struct page *page, int numpages, int enable);
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static __always_inline bool arch_kfence_init_pool(void)
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{
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#ifdef CONFIG_KFENCE
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unsigned long pool_pages = KFENCE_POOL_SIZE >> PAGE_SHIFT;
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set_memory_4k((unsigned long)__kfence_pool, pool_pages);
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#endif
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return true;
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}
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#define arch_kfence_test_address(addr) ((addr) & PAGE_MASK)
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static inline bool kfence_protect_page(unsigned long addr, bool protect)
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{
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__kernel_map_pages(virt_to_page((void *)addr), 1, !protect);
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return true;
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}
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#endif /* _ASM_S390_KFENCE_H */
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