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authorShaohua Li <shaohua.li@intel.com>2005-07-07 17:56:38 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-07 18:23:42 -0700
commit3b520b238e018ef0e9d11c9115d5e7d9419c4ef9 (patch)
tree8b9bf3ccf2dd13dbbbcb4a3ff5028a351817b657 /arch/x86_64
parent01d299367fe868851a632cfbdb606845f57682aa (diff)
[PATCH] MTRR suspend/resume cleanup
There has been some discuss about solving the SMP MTRR suspend/resume breakage, but I didn't find a patch for it. This is an intent for it. The basic idea is moving mtrr initializing into cpu_identify for all APs (so it works for cpu hotplug). For BP, restore_processor_state is responsible for restoring MTRR. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/kernel/setup.c4
-rw-r--r--arch/x86_64/kernel/suspend.c1
2 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index b02d921da4f..5fd03225058 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -1076,6 +1076,10 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
#ifdef CONFIG_X86_MCE
mcheck_init(c);
#endif
+ if (c == &boot_cpu_data)
+ mtrr_bp_init();
+ else
+ mtrr_ap_init();
#ifdef CONFIG_NUMA
if (c != &boot_cpu_data)
numa_add_cpu(c - cpu_data);
diff --git a/arch/x86_64/kernel/suspend.c b/arch/x86_64/kernel/suspend.c
index 6c0f402e3a8..0612640d91b 100644
--- a/arch/x86_64/kernel/suspend.c
+++ b/arch/x86_64/kernel/suspend.c
@@ -119,6 +119,7 @@ void __restore_processor_state(struct saved_context *ctxt)
fix_processor_context();
do_fpu_end();
+ mtrr_ap_init();
}
void restore_processor_state(void)