gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

TO RESET: mmap: ignore MAP_HUGETLB

Browse Source 
Change-Id: Ifd50f24de0747b06d71ebba441ae2ef451f66c4d
This commit is contained in:
Masamichi Takagi
2020-06-15 13:02:05 +09:00
parent 2fa1c053d7
commit b268c28e7e
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm64/kernel/syscall.c
View File

@@ -1723,6 +1723,7 @@ SYSCALL_DECLARE(mmap)
/* check arguments */ /* check arguments */
pgsize = PAGE_SIZE; pgsize = PAGE_SIZE;
#ifndef ENABLE_FUGAKU_HACKS
if (flags & MAP_HUGETLB) { if (flags & MAP_HUGETLB) {
int hugeshift = flags & (0x3F << MAP_HUGE_SHIFT); int hugeshift = flags & (0x3F << MAP_HUGE_SHIFT);
@@ -1763,6 +1764,11 @@ SYSCALL_DECLARE(mmap)
goto out; goto out;
} }
} }
#else
if (flags & MAP_HUGETLB) {
flags &= ~(MAP_HUGETLB);
}
#endif
#define VALID_DUMMY_ADDR ((region->user_start + PTL3_SIZE - 1) & ~(PTL3_SIZE - 1)) #define VALID_DUMMY_ADDR ((region->user_start + PTL3_SIZE - 1) & ~(PTL3_SIZE - 1))
addr = (flags & MAP_FIXED)? addr0: VALID_DUMMY_ADDR; addr = (flags & MAP_FIXED)? addr0: VALID_DUMMY_ADDR;