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| author | Naga Chumbalkar <nagananda.chumbalkar@hp.com> | 2011-02-25 20:31:55 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-03-09 16:36:41 +0100 |
| commit | a7bd1dafdcc13ec7add4aafc927eb5e3a8d597e6 (patch) | |
| tree | e95391ec6377259619788d938bdea441138d8064 | |
| parent | 5471262290a6695b3300903267e0a2584f721000 (diff) | |
| download | blackbird-op-linux-a7bd1dafdcc13ec7add4aafc927eb5e3a8d597e6.tar.gz blackbird-op-linux-a7bd1dafdcc13ec7add4aafc927eb5e3a8d597e6.zip | |
x86: Don't check for BIOS corruption in first 64K when there's no need to
Due to commit 781c5a67f152c17c3e4a9ed9647f8c0be6ea5ae9 it is
likely that the number of areas to scan for BIOS corruption is 0
-- especially when the first 64K is already reserved
(X86_RESERVE_LOW is 64K by default).
If that's the case then don't set up the scan.
Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Cc: <stable@kernel.org>
LKML-Reference: <20110225202838.2229.71011.sendpatchset@nchumbalkar.americas.hpqcorp.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/check.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/kernel/check.c b/arch/x86/kernel/check.c index 13a389179514..452932d34730 100644 --- a/arch/x86/kernel/check.c +++ b/arch/x86/kernel/check.c @@ -106,8 +106,8 @@ void __init setup_bios_corruption_check(void) addr += size; } - printk(KERN_INFO "Scanning %d areas for low memory corruption\n", - num_scan_areas); + if (num_scan_areas) + printk(KERN_INFO "Scanning %d areas for low memory corruption\n", num_scan_areas); } @@ -143,12 +143,12 @@ static void check_corruption(struct work_struct *dummy) { check_for_bios_corruption(); schedule_delayed_work(&bios_check_work, - round_jiffies_relative(corruption_check_period*HZ)); + round_jiffies_relative(corruption_check_period*HZ)); } static int start_periodic_check_for_corruption(void) { - if (!memory_corruption_check || corruption_check_period == 0) + if (!num_scan_areas || !memory_corruption_check || corruption_check_period == 0) return 0; printk(KERN_INFO "Scanning for low memory corruption every %d seconds\n", |
