MIPS: bootmem: Fix mapstart calculation for contiguous maps
Subsystems (2)
PATCH 1/1 MIPS: bootmem: Fix mapstart calculation for contiguous maps
Commit a6335fa1 fixed the case with gap between initrd and next usable PFN zone, but broken the case when initrd is combined with usable memory into one region (in add_memory_region()). Restore the fixup initially brought in by f9a7febd.
---- error message ----
Unpacking initramfs...
Initramfs unpacking failed: junk in compressed archive
BUG: Bad page state in process swapper pfn:00261 page:81004c20 count:0 mapcount:-127 mapping: (null) index:0x2 flags: 0x0() page dumped because: nonzero mapcount CPU: 0 PID: 1 Comm: swapper Not tainted 4.2.0+ #1782 -----------------------
Signed-off-by Alexander Sverdlin <[email protected]>
Reported-by Tony Wu <[email protected]>
Tested-by Tony Wu <[email protected]>
Cc David Daney <[email protected]>
Cc Zubair Lutfullah Kakakhel <[email protected]>
Cc Huacai Chen <[email protected]>
Cc Joe Perches <[email protected]>
Cc Steven J. Hill <[email protected]>
Cc Aaro Koskinen <[email protected]>
Cc Ralf Baechle <[email protected]>
--- arch/mips/kernel/setup.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
arch/mips/kernel/setup.c +9 -1
@@ -338,7 +338,7 @@ static void __init bootmem_init(void)if (end <= reserved_end)continue ;#ifdef CONFIG_BLK_DEV_INITRD -/* mapstart should be after initrd_end */ +/* Skip zones before initrd and initrd itself */ if (initrd_end && end <= (unsigned long )PFN_UP (__pa (initrd_end)))continue ;#endif
@@ -371,6 +371,14 @@ static void __init bootmem_init(void) max_low_pfn =PFN_DOWN (HIGHMEM_START ); } +#ifdef CONFIG_BLK_DEV_INITRD +/* +* mapstart should be after initrd_end +*/ +if (initrd_end) + mapstart =max (mapstart, (unsigned long )PFN_UP (__pa (initrd_end))); +#endif +/* * Initialize the boot-time allocator with low memory only. */