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mcexec/mm: user memory policy control for heap, stack, etc.

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This commit is contained in:
Balazs Gerofi
2017-02-07 04:28:31 +09:00
parent afb7cb3a1e
commit 182202523e
7 changed files with 59 additions and 7 deletions
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9
kernel/process.c
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@ -92,6 +92,7 @@ init_process(struct process *proc, struct process *parent)
proc->egid = parent->egid;
proc->sgid = parent->sgid;
proc->fsgid = parent->fsgid;
proc->mpol_flags = parent->mpol_flags;
memcpy(proc->rlimit, parent->rlimit,
sizeof(struct rlimit) * MCK_RLIM_MAX);
}
@ -1927,7 +1928,8 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
/* Apply user allocation policy to stacks */
/* TODO: make threshold kernel or mcexec argument */
ap_flag = (size >= AP_USER_THRESHOLD) ? IHK_MC_AP_USER : 0;
ap_flag = (size >= AP_USER_THRESHOLD &&
!(proc->mpol_flags & MPOL_NO_STACK)) ? IHK_MC_AP_USER : 0;
dkprintf("%s: size: %lu %s\n", __FUNCTION__, size,
ap_flag ? "(IHK_MC_AP_USER)" : "");
@ -1943,7 +1945,7 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
memset(stack, 0, minsz);
vrflag = VR_STACK | VR_DEMAND_PAGING;
vrflag |= (ap_flag ? VR_AP_USER : 0);
vrflag |= ((ap_flag & IHK_MC_AP_USER) ? VR_AP_USER : 0);
vrflag |= PROT_TO_VR_FLAG(pn->stack_prot);
vrflag |= VR_MAXPROT_READ | VR_MAXPROT_WRITE | VR_MAXPROT_EXEC;
#define NOPHYS ((uintptr_t)-1)
@ -2070,7 +2072,8 @@ unsigned long extend_process_region(struct process_vm *vm,
}
else {
p = ihk_mc_alloc_aligned_pages((aligned_new_end - aligned_end) >> PAGE_SHIFT,
LARGE_PAGE_P2ALIGN, IHK_MC_AP_NOWAIT | IHK_MC_AP_USER);
LARGE_PAGE_P2ALIGN, IHK_MC_AP_NOWAIT |
(!(vm->proc->mpol_flags & MPOL_NO_HEAP) ? IHK_MC_AP_USER : 0));
if (!p) {
return end;