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authorYinghai Lu <yhlu.kernel@gmail.com>2008-06-21 03:50:47 -0700
committerIngo Molnar <mingo@elte.hu>2008-06-23 13:12:04 +0200
commit0754557d72c1fbfc5fcfd5235e7c23ae6f77248c (patch)
tree1c78c00b48b57a901b8d550ab30bef02e9bdc6d9 /arch/x86
parent33ee375b2ea5dd11581a57d67bedd0ca39b19a5e (diff)
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x86: change early_gart_iommu_check() back to any_mapped
Kevin Winchester reported a GART related direct rendering failure against linux-next-20080611, which shows up via these log entries: PCI: Using ACPI for IRQ routing PCI: Cannot allocate resource region 0 of device 0000:00:00.0 agpgart: Detected AGP bridge 0 agpgart: Aperture conflicts with PCI mapping. agpgart: Aperture from AGP @ e0000000 size 128 MB agpgart: Aperture conflicts with PCI mapping. agpgart: No usable aperture found. agpgart: Consider rebooting with iommu=memaper=2 to get a good aperture. instead of the expected: PCI: Using ACPI for IRQ routing agpgart: Detected AGP bridge 0 agpgart: Aperture from AGP @ e0000000 size 128 MB Kevin bisected it down to this change in tip/x86/gart: "x86: checking aperture size order". agp check is using request_mem_region(), and could fail if e820 is reserved... change it back to e820_any_mapped(). Reported-and-bisected-by: "Kevin Winchester" <kjwinchester@gmail.com> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Tested-by: Kevin Winchester <kjwinchester@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/aperture_64.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 3409abb231a..e819362c706 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -324,8 +324,8 @@ void __init early_gart_iommu_check(void)
fix = 1;
if (gart_fix_e820 && !fix && aper_enabled) {
- if (!e820_all_mapped(aper_base, aper_base + aper_size,
- E820_RESERVED)) {
+ if (e820_any_mapped(aper_base, aper_base + aper_size,
+ E820_RAM)) {
/* reserve it, so we can reuse it in second kernel */
printk(KERN_INFO "update e820 for GART\n");
add_memory_region(aper_base, aper_size, E820_RESERVED);