diff options
| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-19 07:16:34 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-20 17:21:41 +0200 |
| commit | d6da67378198e4caa37404f87851659553b936b9 (patch) | |
| tree | 4e8f1f01c68943fd059b8d26836d853ffa6a5b0c /arch/s390/mm | |
| parent | 9ffed254d938c9e99eb7761c7f739294c84e0367 (diff) | |
s390/crash: move copy_to_user_real() to crash_dump.c
Function copy_to_user_real() does not really belong to maccess.c.
It is only used for copying oldmem to user space, so let's move
it to the friends.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Tested-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Link: https://lore.kernel.org/r/e8de968d40202d87caa09aef12e9c67ec23a1c1a.1658206891.git.agordeev@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/maccess.c | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c index 421efa46946b..d6d84e02f35a 100644 --- a/arch/s390/mm/maccess.c +++ b/arch/s390/mm/maccess.c @@ -172,32 +172,6 @@ void memcpy_absolute(void *dest, void *src, size_t count) } /* - * Copy memory from kernel (real) to user (virtual) - */ -int copy_to_user_real(void __user *dest, unsigned long src, unsigned long count) -{ - int offs = 0, size, rc; - char *buf; - - buf = (char *) __get_free_page(GFP_KERNEL); - if (!buf) - return -ENOMEM; - rc = -EFAULT; - while (offs < count) { - size = min(PAGE_SIZE, count - offs); - if (memcpy_real(buf, src + offs, size)) - goto out; - if (copy_to_user(dest + offs, buf, size)) - goto out; - offs += size; - } - rc = 0; -out: - free_page((unsigned long) buf); - return rc; -} - -/* * Check if physical address is within prefix or zero page */ static int is_swapped(phys_addr_t addr) |