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MTRR is no longer set on anything below AMD K6-2 model 9. This should fix bug #624.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17572 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2006-05-24 09:51:56 +00:00
parent 382084bd0a
commit cdffef9f01
1 changed files with 6 additions and 1 deletions
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src/add-ons/kernel/cpu/x86/amd.cpp
+6 -1
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@@ -1,5 +1,5 @@
/* /*
* Copyright 2005, Haiku, Inc. * Copyright 2005-2006, Haiku, Inc.
* Distributed under the terms of the MIT License. * Distributed under the terms of the MIT License.
* *
* Authors: * Authors:
@@ -30,6 +30,11 @@ amd_init(void)
if ((info.cpu_type & B_CPU_x86_VENDOR_MASK) != B_CPU_AMD_x86) if ((info.cpu_type & B_CPU_x86_VENDOR_MASK) != B_CPU_AMD_x86)
return B_ERROR; return B_ERROR;
// The K6-2 doesn't seem to support write-combining (before model 9),
// so we ignore anything before that one.
if (info.cpu_type <= B_CPU_AMD_K6_2)
return B_ERROR;
generic_mtrr_compute_physical_mask(); generic_mtrr_compute_physical_mask();
generic_dump_mtrrs(generic_count_mtrrs()); generic_dump_mtrrs(generic_count_mtrrs());