Contributors: 6
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Christophe Leroy |
110 |
69.62% |
2 |
22.22% |
| Nicholas Miehlbradt |
33 |
20.89% |
1 |
11.11% |
| Aneesh Kumar K.V |
7 |
4.43% |
1 |
11.11% |
| Linus Torvalds (pre-git) |
5 |
3.16% |
3 |
33.33% |
| Andrew Morton |
2 |
1.27% |
1 |
11.11% |
| Paul Mackerras |
1 |
0.63% |
1 |
11.11% |
| Total |
158 |
|
9 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* powerpc KFENCE support.
*
* Copyright (C) 2020 CS GROUP France
*/
#ifndef __ASM_POWERPC_KFENCE_H
#define __ASM_POWERPC_KFENCE_H
#include <linux/mm.h>
#include <asm/pgtable.h>
#ifdef CONFIG_PPC64_ELF_ABI_V1
#define ARCH_FUNC_PREFIX "."
#endif
static inline bool arch_kfence_init_pool(void)
{
return true;
}
#ifdef CONFIG_PPC64
static inline bool kfence_protect_page(unsigned long addr, bool protect)
{
struct page *page = virt_to_page(addr);
__kernel_map_pages(page, 1, !protect);
return true;
}
#else
static inline bool kfence_protect_page(unsigned long addr, bool protect)
{
pte_t *kpte = virt_to_kpte(addr);
if (protect) {
pte_update(&init_mm, addr, kpte, _PAGE_PRESENT, 0, 0);
flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
} else {
pte_update(&init_mm, addr, kpte, 0, _PAGE_PRESENT, 0);
}
return true;
}
#endif
#endif /* __ASM_POWERPC_KFENCE_H */