Matthew Garrett 31ff2f20d9 efi: Distinguish between "remaining space" and actually used space ... EFI implementations distinguish between space that is actively used by a variable and space that merely hasn't been garbage collected yet. Space that hasn't yet been garbage collected isn't available for use and so isn't counted in the remaining_space field returned by QueryVariableInfo(). Combined with commit 68d9298 this can cause problems. Some implementations don't garbage collect until the remaining space is smaller than the maximum variable size, and as a result check_var_size() will always fail once more than 50% of the variable store has been used even if most of that space is marked as available for garbage collection. The user is unable to create new variables, and deleting variables doesn't increase the remaining space. The problem that 68d9298 was attempting to avoid was one where certain platforms fail if the actively used space is greater than 50% of the available storage space. We should be able to calculate that by simply summing the size of each available variable and subtracting that from the total storage space. With luck this will fix the problem described in https://bugzilla.kernel.org/show_bug.cgi?id=55471 without permitting damage to occur to the machines 68d9298 was attempting to fix. Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>		2013-04-15 21:33:05 +01:00
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ce4100	TTY/Serial merge for 3.8-rc1	2012-12-11 14:08:47 -08:00
efi	efi: Distinguish between "remaining space" and actually used space	2013-04-15 21:33:05 +01:00
geode	arch/x86/platform/geode/net5501.c: change active_low to 0 for LED driver	2012-05-04 14:40:07 -07:00
goldfish	goldfish: platform device for x86	2013-01-21 12:09:19 -08:00
iris	arch/x86/platform/iris/iris.c: register a platform device and a platform driver	2012-12-18 15:02:11 -08:00
mrst	X86: drivers: remove __dev* attributes.	2013-01-03 15:57:04 -08:00
olpc	ACPI: Remove useless type argument of driver .remove() operation	2013-01-26 00:37:24 +01:00
scx200	X86: drivers: remove __dev* attributes.	2013-01-03 15:57:04 -08:00
sfi	x86: Convert a few mistaken __cpuinit annotations to __init	2013-01-24 17:12:19 +01:00
ts5500	x86: Add TS-5500 platform support	2013-01-25 19:40:23 +01:00
uv	Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 20:12:57 -08:00
visws	x86/apic: Fix typo EIO_ACK -> EOI_ACK and document it	2012-05-18 09:46:07 +02:00
Makefile	x86: Add TS-5500 platform support	2013-01-25 19:40:23 +01:00