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authorNitin A Kamble <nitin.a.kamble@intel.com>2013-01-30 05:39:51 (GMT)
committerTom Zanussi <tom.zanussi@intel.com>2013-02-01 15:51:27 (GMT)
commit8cc90600ea083de57ebb97795e3053c72b199e7a (patch)
tree80d022d9693730a3c56118a7f406de16eb3e2b59
parent45b05bb04942a38b2a058d815974c45137fca314 (diff)
downloadmeta-intel-8cc90600ea083de57ebb97795e3053c72b199e7a.tar.gz
fri2.conf: fix boot time kernel errors
The following was seen when booting the fri2: BUG: Bad page state in process loop0 pfn:3803 page:f6991700 count:0 mapcount:0 mapping: (null) index:0x0 page flags: 0x80400000(uncached) Modules linked in: emgd drm_kms_helper ip_tables x_tables arc4 minix cdc_acm iwlwifi led_class mac80211 cfg80211 firmware_class Pid: 448, comm: loop0 Not tainted 3.4.26-yocto-standard #1 Call Trace: [<c10cdb0f>] bad_page+0x8f/0xe0 [<c10ce0e5>] get_page_from_freelist+0x435/0x4e0 [<c10ce2c5>] __alloc_pages_nodemask+0x135/0x690 [<c10d1964>] __do_page_cache_readahead+0xe4/0x210 [<c1055a6b>] ? get_parent_ip+0xb/0x40 [<c1055a6b>] ? get_parent_ip+0xb/0x40 [<c10d1cf7>] ra_submit+0x27/0x30 [<c10d1e37>] ondemand_readahead+0x137/0x230 [<c166b061>] ? __wait_on_bit_lock+0x61/0xa0 [<c10d1fae>] page_cache_async_readahead+0x7e/0xa0 [<c112b590>] __generic_file_splice_read+0x360/0x5a0 [<c1129e90>] ? page_cache_pipe_buf_release+0x20/0x20 [<c105c56c>] ? enqueue_task_fair+0x1ac/0x620 [<c105b584>] ? check_preempt_wakeup+0x144/0x220 [<c1054b32>] ? check_preempt_curr+0x72/0x90 [<c1051f5d>] ? ttwu_stat+0x2d/0x100 [<c1055a6b>] ? get_parent_ip+0xb/0x40 [<c1055a6b>] ? get_parent_ip+0xb/0x40 [<c1670763>] ? sub_preempt_count+0x43/0xb0 [<c102573e>] ? __kunmap_atomic+0x3e/0x90 [<c13b22c0>] ? loop_make_request+0xf0/0xf0 [<c13b19b9>] ? lo_splice_actor+0x89/0xc0 [<c12c01e4>] ? security_file_permission+0x94/0xb0 [<c112b83c>] generic_file_splice_read+0x6c/0xe0 [<c112b7d0>] ? __generic_file_splice_read+0x5a0/0x5a0 [<c112a201>] vfs_splice_to+0x61/0x80 [<c112a2ca>] splice_direct_to_actor+0xaa/0x1d0 [<c13b21b0>] ? loop_thread+0x510/0x510 [<c13b1f43>] loop_thread+0x2a3/0x510 [<c13b1ca0>] ? do_lo_send_write+0xe0/0xe0 [<c1047103>] kthread+0x73/0x80 [<c1047090>] ? kthread_freezable_should_stop+0x50/0x50 [<c1673df6>] kernel_thread_helper+0x6/0x10 The fri2 has 1Gb of ram, hence the kernel sets 128Mb for the allocation of vmalloc memory. The EMGD driver needs at least 256Mb of vmalloc memory to work correctly, according to the EMGD documentation This change passes the vmalloc allocation size to the kernel via the vmalloc=256MB boot parameter. Adjusting the kernel's vmalloc allocation size fixes the kernel errors. This fixes bug: [Yocto #3810] Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Acked-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
-rw-r--r--meta-fri2/conf/machine/fri2.conf3
1 files changed, 3 insertions, 0 deletions
diff --git a/meta-fri2/conf/machine/fri2.conf b/meta-fri2/conf/machine/fri2.conf
index 40f2cdc..a1b13fa 100644
--- a/meta-fri2/conf/machine/fri2.conf
+++ b/meta-fri2/conf/machine/fri2.conf
@@ -38,3 +38,6 @@ APPEND += "console=ttyPCH1,115200 console=tty0"
38 38
39# EFI boot will ignore this and use the EFI framebuffer at 800x600 39# EFI boot will ignore this and use the EFI framebuffer at 800x600
40APPEND += "video=vesafb vga=0x318" 40APPEND += "video=vesafb vga=0x318"
41
42# EMGD kernel driver needs at least 256MB of vmalloc space
43APPEND += "vmalloc=256MB"