FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 8bbc2a135b63bee6b41fa90f415521a97995a49f ("x86/intel/quark: Add Intel Quark platform support")


+---------------------------------------------------------------------------------+------------+------------+
|                                                                                 | 28a375df16 | 8bbc2a135b |
+---------------------------------------------------------------------------------+------------+------------+
| boot_successes                                                                  | 30         | 0          |
| early-boot-hang                                                                 | 1          |            |
| boot_failures                                                                   | 0          | 20         |
| WARNING:at_arch/x86/platform/intel-quark/imr.c:#imr_add_range()                 | 0          | 20         |
| WARNING:at_arch/x86/platform/intel-quark/imr_selftest.c:#imr_self_test_result() | 0          | 20         |
| backtrace:imr_add_range                                                         | 0          | 20         |
| backtrace:imr_self_test_init                                                    | 0          | 20         |
| backtrace:kernel_init_freeable                                                  | 0          | 20         |
| backtrace:imr_self_test_result                                                  | 0          | 20         |
+---------------------------------------------------------------------------------+------------+------------+


[    0.737779] Freeing initrd memory: 4240K (d3bb4000 - d3fd8000)
[    0.740441] ------------[ cut here ]------------
[    0.740441] ------------[ cut here ]------------
[    0.741330] WARNING: CPU: 0 PID: 1 at arch/x86/platform/intel-quark/imr.c:358 imr_add_range+0x2b4/0x370()
[    0.741330] WARNING: CPU: 0 PID: 1 at arch/x86/platform/intel-quark/imr.c:358 imr_add_range+0x2b4/0x370()
[    0.743406] driver not initialized
[    0.743406] driver not initialized

[    0.744078] CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc5 #16
[    0.744078] CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc5 #16
[    0.745312] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[    0.745312] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[    0.747301]  d31e3e70
[    0.747301]  d31e3e70 d31e3e70 d31e3e70 d31e3e2c d31e3e2c c1ab0845 c1ab0845 d31e3e60 d31e3e60 c103bb27 c103bb27 c1d4e4d7 c1d4e4d7 d31e3e8c d31e3e8c

[    0.748896]  00000001
[    0.748896]  00000001 c1d54448 c1d54448 00000166 00000166 c1038674 c1038674 00000166 00000166 c1038674 c1038674 00e96000 00e96000 01000000 01000000

[    0.750506]  01e96000
[    0.750506]  01e96000 d31e3e78 d31e3e78 c103bbc3 c103bbc3 00000009 00000009 d31e3e70 d31e3e70 c1d4e4d7 c1d4e4d7 d31e3e8c d31e3e8c d31e3ee8 d31e3ee8

[    0.752098] Call Trace:
[    0.752098] Call Trace:
[    0.752570]  [<c1ab0845>] dump_stack+0x16/0x18
[    0.752570]  [<c1ab0845>] dump_stack+0x16/0x18
[    0.753420]  [<c103bb27>] warn_slowpath_common+0x87/0xc0
[    0.753420]  [<c103bb27>] warn_slowpath_common+0x87/0xc0
[    0.754429]  [<c1038674>] ? imr_add_range+0x2b4/0x370
[    0.754429]  [<c1038674>] ? imr_add_range+0x2b4/0x370
[    0.755384]  [<c1038674>] ? imr_add_range+0x2b4/0x370
[    0.755384]  [<c1038674>] ? imr_add_range+0x2b4/0x370
[    0.756335]  [<c103bbc3>] warn_slowpath_fmt+0x33/0x40
[    0.756335]  [<c103bbc3>] warn_slowpath_fmt+0x33/0x40
[    0.757293]  [<c1038674>] imr_add_range+0x2b4/0x370
[    0.757293]  [<c1038674>] imr_add_range+0x2b4/0x370
[    0.758219]  [<c103057c>] ? slow_virt_to_phys+0x2c/0x90
[    0.758219]  [<c103057c>] ? slow_virt_to_phys+0x2c/0x90
[    0.759200]  [<c103209a>] ? __phys_addr+0x3a/0x90
[    0.759200]  [<c103209a>] ? __phys_addr+0x3a/0x90
[    0.760090]  [<c106e4de>] ? debug_check_no_locks_freed+0x9e/0x160
[    0.760090]  [<c106e4de>] ? debug_check_no_locks_freed+0x9e/0x160
[    0.761361]  [<c103057c>] ? slow_virt_to_phys+0x2c/0x90
[    0.761361]  [<c103057c>] ? slow_virt_to_phys+0x2c/0x90
[    0.762419]  [<c1fb836a>] imr_self_test_init+0x40/0x1d9
[    0.762419]  [<c1fb836a>] imr_self_test_init+0x40/0x1d9
[    0.763439]  [<c1fb832a>] ? imr_self_test_result+0x4e/0x4e
[    0.763439]  [<c1fb832a>] ? imr_self_test_result+0x4e/0x4e
[    0.764477]  [<c1fa7d03>] do_one_initcall+0x180/0x193
[    0.764477]  [<c1fa7d03>] do_one_initcall+0x180/0x193
[    0.765443]  [<c10568bb>] ? parse_args+0x25b/0x530
[    0.765443]  [<c10568bb>] ? parse_args+0x25b/0x530
[    0.766350]  [<c1fa7dec>] kernel_init_freeable+0xd6/0x153
[    0.766350]  [<c1fa7dec>] kernel_init_freeable+0xd6/0x153
[    0.767370]  [<c1fa7dec>] ? kernel_init_freeable+0xd6/0x153
[    0.767370]  [<c1fa7dec>] ? kernel_init_freeable+0xd6/0x153
[    0.768426]  [<c1aab7a0>] kernel_init+0x10/0xe0
[    0.768426]  [<c1aab7a0>] kernel_init+0x10/0xe0
[    0.769296]  [<c1061445>] ? schedule_tail+0x25/0x70
[    0.769296]  [<c1061445>] ? schedule_tail+0x25/0x70
[    0.770424]  [<c1abe060>] ret_from_kernel_thread+0x20/0x30
[    0.770424]  [<c1abe060>] ret_from_kernel_thread+0x20/0x30
[    0.771456]  [<c1aab790>] ? rest_init+0xb0/0xb0
[    0.771456]  [<c1aab790>] ? rest_init+0xb0/0xb0
[    0.772362] ---[ end trace e098947396137dbd ]---
[    0.772362] ---[ end trace e098947396137dbd ]---



Thanks,
Ying Huang