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authorPeng Fan <peng.fan@nxp.com>2021-10-19 01:15:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-10-19 09:22:03 +0300
commit5173ed72bcfcddda21ff274ee31c6472fa150f29 (patch)
treed93b6b01805b04628a733f811165fdf274cad25a /mm/memblock.c
parentb15fa9224e6e1239414525d8d556d824701849fc (diff)
downloadlinux-5173ed72bcfcddda21ff274ee31c6472fa150f29.tar.xz
memblock: check memory total_size
mem=[X][G|M] is broken on ARM64 platform, there are cases that even type.cnt is 1, but total_size is not 0 because regions are merged into 1. So only check 'cnt' is not enough, total_size should be used, othersize bootargs 'mem=[X][G|B]' not work anymore. Link: https://lkml.kernel.org/r/20210930024437.32598-1-peng.fan@oss.nxp.com Fixes: e888fa7bb882 ("memblock: Check memory add/cap ordering") Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memblock.c')
-rw-r--r--mm/memblock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memblock.c b/mm/memblock.c
index 5c3503c98b2f..b91df5cf54d3 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1692,7 +1692,7 @@ void __init memblock_cap_memory_range(phys_addr_t base, phys_addr_t size)
if (!size)
return;
- if (memblock.memory.cnt <= 1) {
+ if (!memblock_memory->total_size) {
pr_warn("%s: No memory registered yet\n", __func__);
return;
}