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arch_clear_host_user_space: set zero to args[2]

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to avoid duplicated per_proc_list entry.
This commit is contained in:
NAKAMURA Gou
2016-04-21 21:07:44 +09:00
parent 397bf3f4a6
commit e2e0fad849
3 changed files with 7 additions and 8 deletions
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12
arch/x86/kernel/syscall.c
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@ -137,14 +137,12 @@ int obtain_clone_cpuid() {
int
arch_clear_host_user_space()
{
struct syscall_request request IHK_DMA_ALIGN;
struct thread *th = cpu_local_var(current);
request.number = __NR_munmap;
request.args[0] = cpu_local_var(current)->vm->region.user_start;
request.args[1] = cpu_local_var(current)->vm->region.user_end -
cpu_local_var(current)->vm->region.user_start;
return do_syscall(&request, ihk_mc_get_processor_id(), 0);
/* XXX: might be unnecessary */
clear_host_pte(th->vm->region.user_start,
(th->vm->region.user_end - th->vm->region.user_start));
return 0;
}
SYSCALL_DECLARE(rt_sigaction)

1
kernel/include/syscall.h
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@ -365,6 +365,7 @@ void reset_cputime();
void set_cputime(int mode);
intptr_t do_mmap(intptr_t addr0, size_t len0, int prot, int flags, int fd,
off_t off0);
void clear_host_pte(uintptr_t addr, size_t len);
typedef int32_t key_t;
int do_shmget(key_t key, size_t size, int shmflg);
struct process_vm;

2
kernel/syscall.c
View File

@ -833,7 +833,7 @@ SYSCALL_DECLARE(exit_group)
return 0;
}
static void clear_host_pte(uintptr_t addr, size_t len)
void clear_host_pte(uintptr_t addr, size_t len)
{
ihk_mc_user_context_t ctx;
long lerror;