diff options
| -rw-r--r-- | arch/x86/include/asm/pat.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/x86_init.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 19 | ||||
| -rw-r--r-- | arch/x86/kernel/x86_init.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/pat.c | 12 |
5 files changed, 33 insertions, 4 deletions
diff --git a/arch/x86/include/asm/pat.h b/arch/x86/include/asm/pat.h index e2c1668dde7..4c35dd016b5 100644 --- a/arch/x86/include/asm/pat.h +++ b/arch/x86/include/asm/pat.h @@ -24,4 +24,6 @@ int io_reserve_memtype(resource_size_t start, resource_size_t end, void io_free_memtype(resource_size_t start, resource_size_t end); +int default_is_untracked_pat_range(u64 start, u64 end); + #endif /* _ASM_X86_PAT_H */ diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 2c756fd4ab0..8112ed78628 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -113,11 +113,13 @@ struct x86_cpuinit_ops { /** * struct x86_platform_ops - platform specific runtime functions + * @is_untracked_pat_range exclude from PAT logic * @calibrate_tsc: calibrate TSC * @get_wallclock: get time from HW clock like RTC etc. * @set_wallclock: set time back to HW clock */ struct x86_platform_ops { + int (*is_untracked_pat_range)(u64 start, u64 end); unsigned long (*calibrate_tsc)(void); unsigned long (*get_wallclock)(void); int (*set_wallclock)(unsigned long nowtime); diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index f5f5886a6b5..2477c9f8809 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -30,10 +30,22 @@ #include <asm/apic.h> #include <asm/ipi.h> #include <asm/smp.h> +#include <asm/x86_init.h> DEFINE_PER_CPU(int, x2apic_extra_bits); static enum uv_system_type uv_system_type; +static u64 gru_start_paddr, gru_end_paddr; + +static int is_GRU_range(u64 start, u64 end) +{ + return start >= gru_start_paddr && end < gru_end_paddr; +} + +static int uv_is_untracked_pat_range(u64 start, u64 end) +{ + return is_ISA_range(start, end) || is_GRU_range(start, end); +} static int early_get_nodeid(void) { @@ -49,6 +61,7 @@ static int early_get_nodeid(void) static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { if (!strcmp(oem_id, "SGI")) { + x86_platform.is_untracked_pat_range = uv_is_untracked_pat_range; if (!strcmp(oem_table_id, "UVL")) uv_system_type = UV_LEGACY_APIC; else if (!strcmp(oem_table_id, "UVX")) @@ -385,8 +398,12 @@ static __init void map_gru_high(int max_pnode) int shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT; gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR); - if (gru.s.enable) + if (gru.s.enable) { map_high("GRU", gru.s.base, shift, max_pnode, map_wb); + gru_start_paddr = ((u64)gru.s.base << shift); + gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1); + + } } static __init void map_mmr_high(int max_pnode) diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 4449a4a2c2e..bcc749ef62d 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -13,6 +13,7 @@ #include <asm/e820.h> #include <asm/time.h> #include <asm/irq.h> +#include <asm/pat.h> #include <asm/tsc.h> void __cpuinit x86_init_noop(void) { } @@ -69,6 +70,7 @@ struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = { }; struct x86_platform_ops x86_platform = { + .is_untracked_pat_range = default_is_untracked_pat_range, .calibrate_tsc = native_calibrate_tsc, .get_wallclock = mach_get_cmos_time, .set_wallclock = mach_set_rtc_mmss, diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index e78cd0ec2bc..38a66ef9426 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -20,6 +20,7 @@ #include <asm/cacheflush.h> #include <asm/processor.h> #include <asm/tlbflush.h> +#include <asm/x86_init.h> #include <asm/pgtable.h> #include <asm/fcntl.h> #include <asm/e820.h> @@ -348,6 +349,11 @@ static int free_ram_pages_type(u64 start, u64 end) return 0; } +int default_is_untracked_pat_range(u64 start, u64 end) +{ + return is_ISA_range(start, end); +} + /* * req_type typically has one of the: * - _PAGE_CACHE_WB @@ -388,7 +394,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, } /* Low ISA region is always mapped WB in page table. No need to track */ - if (is_ISA_range(start, end - 1)) { + if (x86_platform.is_untracked_pat_range(start, end - 1)) { if (new_type) *new_type = _PAGE_CACHE_WB; return 0; @@ -499,7 +505,7 @@ int free_memtype(u64 start, u64 end) return 0; /* Low ISA region is always mapped WB. No need to track */ - if (is_ISA_range(start, end - 1)) + if (x86_platform.is_untracked_pat_range(start, end - 1)) return 0; is_range_ram = pat_pagerange_is_ram(start, end); @@ -582,7 +588,7 @@ static unsigned long lookup_memtype(u64 paddr) int rettype = _PAGE_CACHE_WB; struct memtype *entry; - if (is_ISA_range(paddr, paddr + PAGE_SIZE - 1)) + if (x86_platform.is_untracked_pat_range(paddr, paddr + PAGE_SIZE - 1)) return rettype; if (pat_pagerange_is_ram(paddr, paddr + PAGE_SIZE)) { |