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AGP: Warn when GATT memory cannot be set to UC

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This is one of those paranoid checks which should at least tell
us that something is about to go haywire after we've disabled
GART table walk probes which is done by default now on AMD.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
LKML-Reference: <1283531981-7495-4-git-send-email-bp@amd64.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Borislav Petkov 2010-09-03 18:39:41 +02:00 committed by Ingo Molnar
parent 260133ab65
commit 1b13fe6a6e
1 changed files with 3 additions and 1 deletions
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4
drivers/char/agp/generic.c
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@ -984,7 +984,9 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge)
bridge->driver->cache_flush();
#ifdef CONFIG_X86
set_memory_uc((unsigned long)table, 1 << page_order);
if (set_memory_uc((unsigned long)table, 1 << page_order))
printk(KERN_WARNING "Could not set GATT table memory to UC!");
bridge->gatt_table = (void *)table;
#else
bridge->gatt_table = ioremap_nocache(virt_to_phys(table),