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| author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2022-10-05 10:21:55 +0100 |
|---|---|---|
| committer | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2022-10-05 10:21:55 +0100 |
| commit | edd1533d3ccd82dd5d600986d27d524e6be4c5fd (patch) | |
| tree | 1ac5ae82ea63114d5c13212e2819531e4507f800 /arch/um/kernel/mem.c | |
| parent | 7d8fe4cfc54b5fb2093e12cffa8ca74d3c88e0fa (diff) | |
| parent | 98d67f250472cdd0f8d083830be3ec9dbb0c65a8 (diff) | |
Merge branch 'for-6.1/logitech' into for-linus
- Add hanlding of all Bluetooth HID++ devices and fixes in hid++
(Bastien Nocera)
Diffstat (limited to 'arch/um/kernel/mem.c')
| -rw-r--r-- | arch/um/kernel/mem.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 15295c3237a00..38d5a71a579bc 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -18,6 +18,25 @@ #include <kern_util.h> #include <mem_user.h> #include <os.h> +#include <linux/sched/task.h> + +#ifdef CONFIG_KASAN +int kasan_um_is_ready; +void kasan_init(void) +{ + /* + * kasan_map_memory will map all of the required address space and + * the host machine will allocate physical memory as necessary. + */ + kasan_map_memory((void *)KASAN_SHADOW_START, KASAN_SHADOW_SIZE); + init_task.kasan_depth = 0; + kasan_um_is_ready = true; +} + +static void (*kasan_init_ptr)(void) +__section(".kasan_init") __used += kasan_init; +#endif /* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */ unsigned long *empty_zero_page = NULL; @@ -197,3 +216,23 @@ void *uml_kmalloc(int size, int flags) { return kmalloc(size, flags); } + +static const pgprot_t protection_map[16] = { + [VM_NONE] = PAGE_NONE, + [VM_READ] = PAGE_READONLY, + [VM_WRITE] = PAGE_COPY, + [VM_WRITE | VM_READ] = PAGE_COPY, + [VM_EXEC] = PAGE_READONLY, + [VM_EXEC | VM_READ] = PAGE_READONLY, + [VM_EXEC | VM_WRITE] = PAGE_COPY, + [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY, + [VM_SHARED] = PAGE_NONE, + [VM_SHARED | VM_READ] = PAGE_READONLY, + [VM_SHARED | VM_WRITE] = PAGE_SHARED, + [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED, + [VM_SHARED | VM_EXEC] = PAGE_READONLY, + [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY, + [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED, + [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED +}; +DECLARE_VM_GET_PAGE_PROT |