8:10 a.m.
Hi Christophe,
I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on hnaz-mm/master linus/master v5.16-rc2 next-20211118]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/Convert-powerpc...
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc64-randconfig-r021-20211122 (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
#
https://github.com/0day-ci/linux/commit/1d0b7cc86d08f25f595b52d8c39ba9ca1...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Christophe-Leroy/Convert-powerpc-to-default-topdown-mmap-layout/20211122-165115
git checkout 1d0b7cc86d08f25f595b52d8c39ba9ca1d29a30a
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
arch/powerpc/mm/book3s64/slice.c: In function 'slice_get_unmapped_area':
> arch/powerpc/mm/book3s64/slice.c:639:1: error: the frame size of
1056 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
639 | }
| ^
cc1: all warnings being treated as errors
vim +639 arch/powerpc/mm/book3s64/slice.c
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 428
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 429 unsigned
long slice_get_unmapped_area(unsigned long addr, unsigned long len,
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 430
unsigned long flags, unsigned int psize,
34d07177b802e9 arch/powerpc/mm/slice.c Michel Lespinasse 2013-04-29 431
int topdown)
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 432 {
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 433 struct
slice_mask good_mask;
f3207c124e7aa8 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-03-22 434 struct
slice_mask potential_mask;
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 435 const
struct slice_mask *maskp;
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 436 const
struct slice_mask *compat_maskp = NULL;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 437 int fixed
= (flags & MAP_FIXED);
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 438 int pshift
= max_t(int, mmu_psize_defs[psize].shift, PAGE_SHIFT);
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 439 unsigned
long page_size = 1UL << pshift;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 440 struct
mm_struct *mm = current->mm;
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 441 unsigned
long newaddr;
f4ea6dcb08ea2c arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-03-30 442 unsigned
long high_limit;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 443
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 444 high_limit
= DEFAULT_MAP_WINDOW;
35602f82d0c765 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 445 if (addr
>= high_limit || (fixed && (addr + len > high_limit)))
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 446
high_limit = TASK_SIZE;
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 447
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 448 if (len
> high_limit)
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 449 return
-ENOMEM;
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 450 if (len
& (page_size - 1))
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 451 return
-EINVAL;
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 452 if (fixed)
{
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 453 if (addr
& (page_size - 1))
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 454 return
-EINVAL;
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 455 if (addr
> high_limit - len)
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 456 return
-ENOMEM;
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 457 }
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 458
60458fba469a69 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2019-04-17 459 if
(high_limit > mm_ctx_slb_addr_limit(&mm->context)) {
5709f7cfd83052 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 460 /*
5709f7cfd83052 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 461 *
Increasing the slb_addr_limit does not require
5709f7cfd83052 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 462 * slice
mask cache to be recalculated because it should
5709f7cfd83052 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 463 * be
already initialised beyond the old address limit.
5709f7cfd83052 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 464 */
60458fba469a69 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2019-04-17 465
mm_ctx_set_slb_addr_limit(&mm->context, high_limit);
54be0b9c7c9888 arch/powerpc/mm/slice.c Michael Ellerman 2018-10-02 466
54be0b9c7c9888 arch/powerpc/mm/slice.c Michael Ellerman 2018-10-02 467
on_each_cpu(slice_flush_segments, mm, 1);
f4ea6dcb08ea2c arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-03-30 468 }
6a72dc038b6152 arch/powerpc/mm/slice.c Nicholas Piggin 2017-11-10 469
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 470 /* Sanity
checks */
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 471
BUG_ON(mm->task_size == 0);
60458fba469a69 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2019-04-17 472
BUG_ON(mm_ctx_slb_addr_limit(&mm->context) == 0);
764041e0f43cc7 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2016-04-29 473
VM_BUG_ON(radix_enabled());
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 474
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 475
slice_dbg("slice_get_unmapped_area(mm=%p, psize=%d...\n", mm, psize);
34d07177b802e9 arch/powerpc/mm/slice.c Michel Lespinasse 2013-04-29 476
slice_dbg(" addr=%lx, len=%lx, flags=%lx, topdown=%d\n",
34d07177b802e9 arch/powerpc/mm/slice.c Michel Lespinasse 2013-04-29 477 addr,
len, flags, topdown);
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 478
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 479 /* If
hint, make sure it matches our alignment restrictions */
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 480 if (!fixed
&& addr) {
b711531641038f arch/powerpc/mm/slice.c Christophe Leroy 2020-04-20 481 addr =
ALIGN(addr, page_size);
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 482
slice_dbg(" aligned addr=%lx\n", addr);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 483 /* Ignore
hint if it's too large or overlaps a VMA */
3b4d07d2674f6b arch/powerpc/mm/slice.c Aneesh Kumar K.V 2019-02-26 484 if (addr
> high_limit - len || addr < mmap_min_addr ||
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 485
!slice_area_is_free(mm, addr, len))
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 486 addr =
0;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 487 }
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 488
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 489 /* First
make up a "good" mask of slices that have the right size
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 490 *
already
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 491 */
6f60cc98df2be7 arch/powerpc/mm/slice.c Christophe Leroy 2019-04-25 492 maskp =
slice_mask_for_size(&mm->context, psize);
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 493
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 494 /*
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 495 * Here
"good" means slices that are already the right page size,
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 496 *
"compat" means slices that have a compatible page size (i.e.
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 497 * 4k in a
64k pagesize kernel), and "free" means slices without
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 498 * any
VMAs.
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 499 *
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 500 * If
MAP_FIXED:
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 501 * check
if fits in good | compat => OK
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 502 * check
if fits in good | compat | free => convert free
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 503 * else
bad
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 504 * If have
hint:
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 505 * check
if hint fits in good => OK
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 506 * check
if hint fits in good | free => convert free
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 507 *
Otherwise:
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 508 * search
in good, found => OK
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 509 * search
in good | free, found => convert free
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 510 * search
in good | compat | free, found => convert free.
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 511 */
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 512
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 513 /*
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 514 * If we
support combo pages, we can allow 64k pages in 4k slices
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 515 * The
mask copies could be avoided in most cases here if we had
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 516 * a
pointer to good mask for the next code to use.
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 517 */
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 518 if
(IS_ENABLED(CONFIG_PPC_64K_PAGES) && psize == MMU_PAGE_64K) {
6f60cc98df2be7 arch/powerpc/mm/slice.c Christophe Leroy 2019-04-25 519
compat_maskp = slice_mask_for_size(&mm->context, MMU_PAGE_4K);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 520 if
(fixed)
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 521
slice_or_mask(&good_mask, maskp, compat_maskp);
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 522 else
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 523
slice_copy_mask(&good_mask, maskp);
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 524 } else {
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 525
slice_copy_mask(&good_mask, maskp);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 526 }
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 527
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 528
slice_print_mask(" good_mask", &good_mask);
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 529 if
(compat_maskp)
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 530
slice_print_mask(" compat_mask", compat_maskp);
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 531
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 532 /* First
check hint if it's valid or if we have MAP_FIXED */
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 533 if (addr
!= 0 || fixed) {
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 534 /* Check
if we fit in the good mask. If we do, we just return,
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 535 *
nothing else to do
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 536 */
ae3066bd1cbe58 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 537 if
(slice_check_range_fits(mm, &good_mask, addr, len)) {
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 538
slice_dbg(" fits good !\n");
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 539 newaddr
= addr;
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 540 goto
return_addr;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 541 }
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 542 } else {
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 543 /* Now
let's see if we can find something in the existing
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 544 * slices
for that size
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 545 */
830fd2d45aa116 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 546 newaddr =
slice_find_area(mm, len, &good_mask,
f4ea6dcb08ea2c arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-03-30 547
psize, topdown, high_limit);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 548 if
(newaddr != -ENOMEM) {
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 549 /* Found
within the good mask, we don't have to setup,
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 550 * we
thus return directly
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 551 */
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 552
slice_dbg(" found area at 0x%lx\n", newaddr);
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 553 goto
return_addr;
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 554 }
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 555 }
7a06c66835f75f arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-11-10 556 /*
7a06c66835f75f arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-11-10 557 * We
don't fit in the good mask, check what other slices are
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 558 * empty
and thus can be converted
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 559 */
7a06c66835f75f arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-11-10 560
slice_mask_for_free(mm, &potential_mask, high_limit);
b8c93549142077 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 561
slice_or_mask(&potential_mask, &potential_mask, &good_mask);
830fd2d45aa116 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 562
slice_print_mask(" potential", &potential_mask);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 563
ae3066bd1cbe58 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 564 if (addr
!= 0 || fixed) {
ae3066bd1cbe58 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 565 if
(slice_check_range_fits(mm, &potential_mask, addr, len)) {
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 566
slice_dbg(" fits potential !\n");
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 567 newaddr
= addr;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 568 goto
convert;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 569 }
ae3066bd1cbe58 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 570 }
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 571
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 572 /* If we
have MAP_FIXED and failed the above steps, then error out */
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 573 if
(fixed)
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 574 return
-EBUSY;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 575
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 576
slice_dbg(" search...\n");
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 577
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 578 /* If we
had a hint that didn't work out, see if we can fit
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 579 *
anywhere in the good area.
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 580 */
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 581 if (addr)
{
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 582 newaddr =
slice_find_area(mm, len, &good_mask,
f4ea6dcb08ea2c arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-03-30 583
psize, topdown, high_limit);
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 584 if
(newaddr != -ENOMEM) {
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 585
slice_dbg(" found area at 0x%lx\n", newaddr);
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 586 goto
return_addr;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 587 }
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 588 }
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 589
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 590 /* Now
let's see if we can find something in the existing slices
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 591 * for
that size plus free slices
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 592 */
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 593 newaddr =
slice_find_area(mm, len, &potential_mask,
f4ea6dcb08ea2c arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-03-30 594
psize, topdown, high_limit);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 595
203a1fa6286671 arch/powerpc/mm/slice.c Christophe Leroy 2019-04-25 596 if
(IS_ENABLED(CONFIG_PPC_64K_PAGES) && newaddr == -ENOMEM &&
203a1fa6286671 arch/powerpc/mm/slice.c Christophe Leroy 2019-04-25 597 psize
== MMU_PAGE_64K) {
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 598 /* retry
the search with 4k-page slices included */
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 599
slice_or_mask(&potential_mask, &potential_mask, compat_maskp);
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 600 newaddr =
slice_find_area(mm, len, &potential_mask,
f4ea6dcb08ea2c arch/powerpc/mm/slice.c Aneesh Kumar K.V 2017-03-30 601
psize, topdown, high_limit);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 602 }
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 603
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 604 if
(newaddr == -ENOMEM)
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 605 return
-ENOMEM;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 606
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 607
slice_range_to_mask(newaddr, len, &potential_mask);
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 608
slice_dbg(" found potential area at 0x%lx\n", newaddr);
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 609
slice_print_mask(" mask", &potential_mask);
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 610
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 611 convert:
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 612 /*
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 613 * Try to
allocate the context before we do slice convert
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 614 * so that
we handle the context allocation failure gracefully.
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 615 */
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 616 if
(need_extra_context(mm, newaddr)) {
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 617 if
(alloc_extended_context(mm, newaddr) < 0)
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 618 return
-ENOMEM;
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 619 }
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 620
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 621
slice_andnot_mask(&potential_mask, &potential_mask, &good_mask);
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 622 if
(compat_maskp && !fixed)
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 623
slice_andnot_mask(&potential_mask, &potential_mask, compat_maskp);
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 624 if
(potential_mask.low_slices ||
db3a528db41caa arch/powerpc/mm/slice.c Christophe Leroy 2018-02-22 625
(SLICE_NUM_HIGH &&
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 626
!bitmap_empty(potential_mask.high_slices, SLICE_NUM_HIGH))) {
d262bd5a739982 arch/powerpc/mm/slice.c Nicholas Piggin 2018-03-07 627
slice_convert(mm, &potential_mask, psize);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 628 if (psize
> MMU_PAGE_BASE)
54be0b9c7c9888 arch/powerpc/mm/slice.c Michael Ellerman 2018-10-02 629
on_each_cpu(slice_flush_segments, mm, 1);
3a8247cc2c8569 arch/powerpc/mm/slice.c Paul Mackerras 2008-06-18 630 }
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 631 return
newaddr;
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 632
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 633
return_addr:
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 634 if
(need_extra_context(mm, newaddr)) {
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 635 if
(alloc_extended_context(mm, newaddr) < 0)
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 636 return
-ENOMEM;
f384796c40dc55 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 637 }
0dea04b288c066 arch/powerpc/mm/slice.c Aneesh Kumar K.V 2018-03-26 638 return
newaddr;
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 @639 }
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 640
EXPORT_SYMBOL_GPL(slice_get_unmapped_area);
d0f13e3c20b6fb arch/powerpc/mm/slice.c Benjamin Herrenschmidt 2007-05-08 641
---
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