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ContiguousPTE[12/12] modify sys_shmget/sys_mmap

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Change-Id: Icfbe9fbfa6216735ec20c55da95e5b62a25fdfea
This commit is contained in:
TOIDA,Suguru
2018-11-30 09:18:47 +09:00
committed by Masamichi Takagi
parent 410bf13367
commit 4ba4bbd711
4 changed files with 37 additions and 28 deletions
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4
arch/arm64/kernel/include/arch/mman.h
View File

@ -23,10 +23,14 @@
#define MAP_HUGE_SHIFT 26
#if FIRST_LEVEL_BLOCK_SUPPORT
# define MAP_HUGE_FIRST_BLOCK (__PTL3_SHIFT << MAP_HUGE_SHIFT)
# define MAP_HUGE_FIRST_CONT_BLOCK (__PTL3_CONT_SHIFT << MAP_HUGE_SHIFT)
#else
# define MAP_HUGE_FIRST_BLOCK -1 /* not supported */
# define MAP_HUGE_FIRST_CONT_BLOCK -1 /* not supported */
#endif
#define MAP_HUGE_SECOND_BLOCK (__PTL2_SHIFT << MAP_HUGE_SHIFT)
#define MAP_HUGE_SECOND_CONT_BLOCK (__PTL2_CONT_SHIFT << MAP_HUGE_SHIFT)
#define MAP_HUGE_THIRD_CONT_BLOCK (__PTL1_CONT_SHIFT << MAP_HUGE_SHIFT)
/*
* for mlockall()

4
arch/arm64/kernel/include/arch/shm.h
View File

@ -8,10 +8,14 @@
#define SHM_HUGE_SHIFT 26
#if FIRST_LEVEL_BLOCK_SUPPORT
# define SHM_HUGE_FIRST_BLOCK (__PTL3_SHIFT << SHM_HUGE_SHIFT)
# define SHM_HUGE_FIRST_CONT_BLOCK (__PTL3_CONT_SHIFT << SHM_HUGE_SHIFT)
#else
# define SHM_HUGE_FIRST_BLOCK -1 /* not supported */
# define SHM_HUGE_FIRST_CONT_BLOCK -1 /* not supported */
#endif
#define SHM_HUGE_SECOND_BLOCK (__PTL2_SHIFT << SHM_HUGE_SHIFT)
#define SHM_HUGE_SECOND_CONT_BLOCK (__PTL2_CONT_SHIFT << SHM_HUGE_SHIFT)
#define SHM_HUGE_THIRD_CONT_BLOCK (__PTL1_CONT_SHIFT << SHM_HUGE_SHIFT)
struct ipc_perm {
key_t key;

41
arch/arm64/kernel/syscall.c
View File

@ -1745,23 +1745,24 @@ SYSCALL_DECLARE(mmap)
/* check arguments */
pgsize = PAGE_SIZE;
if (flags & MAP_HUGETLB) {
switch (flags & (0x3F << MAP_HUGE_SHIFT)) {
case 0:
flags |= MAP_HUGE_SECOND_BLOCK; /* default hugepage size */
break;
int hugeshift = flags & (0x3F << MAP_HUGE_SHIFT);
case MAP_HUGE_SECOND_BLOCK:
case MAP_HUGE_FIRST_BLOCK:
break;
default:
if (hugeshift == 0) {
/* default hugepage size */
flags |= MAP_HUGE_SECOND_BLOCK;
} else if (hugeshift == MAP_HUGE_SECOND_BLOCK ||
hugeshift == MAP_HUGE_FIRST_BLOCK ||
hugeshift == MAP_HUGE_SECOND_CONT_BLOCK ||
hugeshift == MAP_HUGE_FIRST_CONT_BLOCK ||
hugeshift == MAP_HUGE_THIRD_CONT_BLOCK) {
/*nop*/
} else {
ekprintf("sys_mmap(%lx,%lx,%x,%x,%x,%lx):"
"not supported page size.\n",
addr0, len0, prot, flags0, fd, off0);
error = -EINVAL;
goto out;
}
pgsize = (size_t)1 << ((flags >> MAP_HUGE_SHIFT) & 0x3F);
}
@ -1819,16 +1820,18 @@ SYSCALL_DECLARE(shmget)
dkprintf("shmget(%#lx,%#lx,%#x)\n", key, size, shmflg0);
if (shmflg & SHM_HUGETLB) {
switch (shmflg & (0x3F << SHM_HUGE_SHIFT)) {
case 0:
shmflg |= SHM_HUGE_SECOND_BLOCK; /* default hugepage size */
break;
int hugeshift = shmflg & (0x3F << SHM_HUGE_SHIFT);
case SHM_HUGE_SECOND_BLOCK:
case SHM_HUGE_FIRST_BLOCK:
break;
default:
if (hugeshift == 0) {
/* default hugepage size */
shmflg |= SHM_HUGE_SECOND_BLOCK;
} else if (hugeshift == SHM_HUGE_SECOND_BLOCK ||
hugeshift == SHM_HUGE_FIRST_BLOCK ||
hugeshift == SHM_HUGE_SECOND_CONT_BLOCK ||
hugeshift == SHM_HUGE_FIRST_CONT_BLOCK ||
hugeshift == SHM_HUGE_THIRD_CONT_BLOCK) {
/*nop*/
} else {
error = -EINVAL;
goto out;
}

16
arch/x86_64/kernel/syscall.c
View File

@ -1725,16 +1725,14 @@ SYSCALL_DECLARE(shmget)
dkprintf("shmget(%#lx,%#lx,%#x)\n", key, size, shmflg0);
if (shmflg & SHM_HUGETLB) {
switch (shmflg & (0x3F << SHM_HUGE_SHIFT)) {
case 0:
int hugeshift = shmflg & (0x3F << SHM_HUGE_SHIFT);
if (hugeshift == 0) {
shmflg |= SHM_HUGE_2MB; /* default hugepage size */
break;
case SHM_HUGE_2MB:
case SHM_HUGE_1GB:
break;
default:
} else if (hugeshift == SHM_HUGE_2MB ||
hugeshift == SHM_HUGE_1GB) {
/*nop*/
} else {
error = -EINVAL;
goto out;
}