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os: add an ability to lock memory on_fault

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This will be used in the following commits to make it possible to only
lock memory on fault instead of right away.

Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Link: https://lore.kernel.org/r/20250212143920.1269754-2-d-tatianin@yandex-team.ru
[peterx: fail os_mlock(on_fault=1) when not supported]
[peterx: use G_GNUC_UNUSED instead of "(void)on_fault", per Dan]
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Daniil Tatianin 2025-02-12 17:39:17 +03:00 • committed by Peter Xu
parent 30943e496f
commit e76fadf93e
6 changed files with 23 additions and 6 deletions
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2
include/system/os-posix.h
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@ -53,7 +53,7 @@ bool os_set_runas(const char *user_id);
void os_set_chroot(const char *path);
void os_setup_limits(void);
void os_setup_post(void);
int os_mlock(void);
int os_mlock(bool on_fault);
/**
* qemu_alloc_stack: