Matt Fleming e2c90dd7e1 x86/efi-bgrt: Replace early_memremap() with memremap() ... Môshe reported the following warning triggered on his machine since commit 50a0cb5652 ("x86/efi-bgrt: Fix kernel panic when mapping BGRT data"), [ 0.026936] ------------[ cut here ]------------ [ 0.026941] WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:137 __early_ioremap+0x102/0x1bb() [ 0.026941] Modules linked in: [ 0.026944] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.0-rc1 #2 [ 0.026945] Hardware name: Dell Inc. XPS 13 9343/09K8G1, BIOS A05 07/14/2015 [ 0.026946] 0000000000000000 900f03d5a116524d ffffffff81c03e60 ffffffff813a3fff [ 0.026948] 0000000000000000 ffffffff81c03e98 ffffffff810a0852 00000000d7b76000 [ 0.026949] 0000000000000000 0000000000000001 0000000000000001 000000000000017c [ 0.026951] Call Trace: [ 0.026955] [<ffffffff813a3fff>] dump_stack+0x44/0x55 [ 0.026958] [<ffffffff810a0852>] warn_slowpath_common+0x82/0xc0 [ 0.026959] [<ffffffff810a099a>] warn_slowpath_null+0x1a/0x20 [ 0.026961] [<ffffffff81d8c395>] __early_ioremap+0x102/0x1bb [ 0.026962] [<ffffffff81d8c602>] early_memremap+0x13/0x15 [ 0.026964] [<ffffffff81d78361>] efi_bgrt_init+0x162/0x1ad [ 0.026966] [<ffffffff81d778ec>] efi_late_init+0x9/0xb [ 0.026968] [<ffffffff81d58ff5>] start_kernel+0x46f/0x49f [ 0.026970] [<ffffffff81d58120>] ? early_idt_handler_array+0x120/0x120 [ 0.026972] [<ffffffff81d58339>] x86_64_start_reservations+0x2a/0x2c [ 0.026974] [<ffffffff81d58485>] x86_64_start_kernel+0x14a/0x16d [ 0.026977] ---[ end trace f9b3812eb8e24c58 ]--- [ 0.026978] efi_bgrt: Ignoring BGRT: failed to map image memory early_memremap() has an upper limit on the size of mapping it can handle which is ~200KB. Clearly the BGRT image on Môshe's machine is much larger than that. There's actually no reason to restrict ourselves to using the early_* version of memremap() - the ACPI BGRT driver is invoked late enough in boot that we can use the standard version, with the benefit that the late version allows mappings of arbitrary size. Reported-by: Môshe van der Sterre <me@moshe.nl> Tested-by: Môshe van der Sterre <me@moshe.nl> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> Cc: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1450707172-12561-1-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2016-01-06 18:28:52 +01:00
..
atom	x86/platform: Make atom/pmc_atom.c explicitly non-modular	2015-08-25 09:47:50 +02:00
ce4100	x86: ce4100, irq: Do not set legacy_pic to null_legacy_pic	2014-06-21 23:05:42 +02:00
efi	x86/efi-bgrt: Replace early_memremap() with memremap()	2016-01-06 18:28:52 +01:00
geode	x86/geode: Fix incorrect placement of __initdata tag	2013-10-01 13:21:27 +02:00
goldfish	goldfish: platform device for x86	2013-01-21 12:09:19 -08:00
intel	x86/platform/iosf_mbi: Add Intel Tangier PCI id	2015-07-16 17:48:48 +02:00
intel-mid	x86/intel-mid: Make intel_mid_ops static	2015-10-11 21:03:12 +02:00
intel-quark	x86/intel/quark: Run IMR self-test on IMR capble hw only	2015-04-02 12:47:50 +02:00
iris	x86: platform: iris: drop owner assignment from platform_drivers	2014-10-20 16:20:15 +02:00
olpc	x86/olpc/xo15/sci: Use newly added power_supply_put API	2015-03-13 23:15:53 +01:00
scx200	X86: drivers: remove __dev* attributes.	2013-01-03 15:57:04 -08:00
sfi	x86: Cleanup irq_domain ops	2015-04-24 15:36:55 +02:00
ts5500	x86/platform/ts5500: Add support for TS-5400 boards	2014-07-16 21:17:42 +02:00
uv	x86/platform/uv: Implement simple dump failover if kdump fails	2015-09-14 15:31:30 +02:00
Makefile	x86/platform/iosf_mbi: Move to dedicated folder	2015-07-16 17:48:47 +02:00