diff options
author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-14 22:54:21 -0400 |
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committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-14 22:54:21 -0400 |
commit | 3ec10cd8b526c6b10170c2649002672ee2019e73 (patch) | |
tree | 27e3fb26020877ae43d3bcc5996c058957df3dc3 /arch/x86/kernel | |
parent | 993916203f00e8c62599466a5caa866e09f0fae3 (diff) | |
parent | 1be99f6c95e6c887756f789a60d15771235acd0c (diff) |
Merge commit 'v2.6.38.3' into linaro-2.6.38
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r-- | arch/x86/kernel/cpu/mtrr/main.c | 20 | ||||
-rw-r--r-- | arch/x86/kernel/head64.c | 3 | ||||
-rw-r--r-- | arch/x86/kernel/setup.c | 5 |
3 files changed, 18 insertions, 10 deletions
diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c index bebabec5b44..151787e382c 100644 --- a/arch/x86/kernel/cpu/mtrr/main.c +++ b/arch/x86/kernel/cpu/mtrr/main.c @@ -292,14 +292,24 @@ set_mtrr(unsigned int reg, unsigned long base, unsigned long size, mtrr_type typ /* * HACK! - * We use this same function to initialize the mtrrs on boot. - * The state of the boot cpu's mtrrs has been saved, and we want - * to replicate across all the APs. - * If we're doing that @reg is set to something special... + * + * We use this same function to initialize the mtrrs during boot, + * resume, runtime cpu online and on an explicit request to set a + * specific MTRR. + * + * During boot or suspend, the state of the boot cpu's mtrrs has been + * saved, and we want to replicate that across all the cpus that come + * online (either at the end of boot or resume or during a runtime cpu + * online). If we're doing that, @reg is set to something special and on + * this cpu we still do mtrr_if->set_all(). During boot/resume, this + * is unnecessary if at this point we are still on the cpu that started + * the boot/resume sequence. But there is no guarantee that we are still + * on the same cpu. So we do mtrr_if->set_all() on this cpu aswell to be + * sure that we are in sync with everyone else. */ if (reg != ~0U) mtrr_if->set(reg, base, size, type); - else if (!mtrr_aps_delayed_init) + else mtrr_if->set_all(); /* Wait for the others */ diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 5655c2272ad..2d2673c28af 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -77,6 +77,9 @@ void __init x86_64_start_kernel(char * real_mode_data) /* Make NULL pointers segfault */ zap_identity_mappings(); + /* Cleanup the over mapped high alias */ + cleanup_highmap(); + max_pfn_mapped = KERNEL_IMAGE_SIZE >> PAGE_SHIFT; for (i = 0; i < NUM_EXCEPTION_VECTORS; i++) { diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index e543fe9311e..d3cfe26c025 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -297,9 +297,6 @@ static void __init init_gbpages(void) static inline void init_gbpages(void) { } -static void __init cleanup_highmap(void) -{ -} #endif static void __init reserve_brk(void) @@ -925,8 +922,6 @@ void __init setup_arch(char **cmdline_p) */ reserve_brk(); - cleanup_highmap(); - memblock.current_limit = get_max_mapped(); memblock_x86_fill(); |