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Toggle preemption while faulting pages

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Change-Id: I74201061bb3e7c7c4032e3884658ace87cb85948
This commit is contained in:
Balazs Gerofi
2020-04-20 20:30:18 +09:00
committed by Masamichi Takagi
parent 3e254c06bf
commit d370e9241f
2 changed files with 4 additions and 0 deletions
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2
kernel/host.c
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@@ -718,9 +718,11 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
dkprintf("remote page fault,pid=%d,va=%lx,reason=%x\n",
thread->proc->pid, packet->fault_address,
packet->fault_reason|PF_POPULATE);
preempt_disable();
pckt.err = page_fault_process_vm(thread->vm,
(void *)packet->fault_address,
packet->fault_reason|PF_POPULATE);
preempt_enable();
#ifdef PROFILE_ENABLE
if (thread->profile) {

2
kernel/process.c
View File

@@ -2816,6 +2816,7 @@ int populate_process_memory(struct process_vm *vm, void *start, size_t len)
uintptr_t addr;
end = (uintptr_t)start + len;
preempt_disable();
for (addr = (uintptr_t)start; addr < end; addr += PAGE_SIZE) {
error = page_fault_process_vm(vm, (void *)addr, reason);
if (error) {
@@ -2829,6 +2830,7 @@ int populate_process_memory(struct process_vm *vm, void *start, size_t len)
error = 0;
out:
preempt_enable();
return error;
}