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-rw-r--r--arch/x86/kernel/apic/apic.c15
-rw-r--r--arch/x86/kernel/apic/apic_flat_64.c5
-rw-r--r--arch/x86/kernel/apic/probe_64.c8
-rw-r--r--arch/x86/kernel/apic/x2apic_uv_x.c26
4 files changed, 27 insertions, 27 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index e80f291472a..3987e4408f7 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -61,12 +61,6 @@ unsigned int boot_cpu_physical_apicid = -1U;
/*
* The highest APIC ID seen during enumeration.
- *
- * This determines the messaging protocol we can use: if all APIC IDs
- * are in the 0 ... 7 range, then we can use logical addressing which
- * has some performance advantages (better broadcasting).
- *
- * If there's an APIC ID above 8, we use physical addressing.
*/
unsigned int max_physical_apicid;
@@ -1898,14 +1892,7 @@ void __cpuinit generic_processor_info(int apicid, int version)
max_physical_apicid = apicid;
#ifdef CONFIG_X86_32
- /*
- * Would be preferable to switch to bigsmp when CONFIG_HOTPLUG_CPU=y
- * but we need to work other dependencies like SMP_SUSPEND etc
- * before this can be done without some confusion.
- * if (CPU_HOTPLUG_ENABLED || num_processors > 8)
- * - Ashok Raj <ashok.raj@intel.com>
- */
- if (max_physical_apicid >= 8) {
+ if (num_processors > 8) {
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_INTEL:
if (!APIC_XAPIC(version)) {
diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index eacbd2b31d2..e3c3d820c32 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -240,6 +240,11 @@ static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
printk(KERN_DEBUG "system APIC only can use physical flat");
return 1;
}
+
+ if (!strncmp(oem_id, "IBM", 3) && !strncmp(oem_table_id, "EXA", 3)) {
+ printk(KERN_DEBUG "IBM Summit detected, will use apic physical");
+ return 1;
+ }
#endif
return 0;
diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c
index 65edc180fc8..450fe2064a1 100644
--- a/arch/x86/kernel/apic/probe_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
@@ -64,15 +64,13 @@ void __init default_setup_apic_routing(void)
apic = &apic_x2apic_phys;
else
apic = &apic_x2apic_cluster;
- printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
}
#endif
- if (apic == &apic_flat) {
- if (max_physical_apicid >= 8)
+ if (apic == &apic_flat && num_processors > 8)
apic = &apic_physflat;
- printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
- }
+
+ printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
if (is_vsmp_box()) {
/* need to update phys_pkg_id */
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 5f92494dab6..21db3cbea7d 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -36,6 +36,8 @@ DEFINE_PER_CPU(int, x2apic_extra_bits);
static enum uv_system_type uv_system_type;
static u64 gru_start_paddr, gru_end_paddr;
+int uv_min_hub_revision_id;
+EXPORT_SYMBOL_GPL(uv_min_hub_revision_id);
static inline bool is_GRU_range(u64 start, u64 end)
{
@@ -55,12 +57,19 @@ static int early_get_nodeid(void)
mmr = early_ioremap(UV_LOCAL_MMR_BASE | UVH_NODE_ID, sizeof(*mmr));
node_id.v = *mmr;
early_iounmap(mmr, sizeof(*mmr));
+
+ /* Currently, all blades have same revision number */
+ uv_min_hub_revision_id = node_id.s.revision;
+
return node_id.s.node_id;
}
static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
+ int nodeid;
+
if (!strcmp(oem_id, "SGI")) {
+ nodeid = early_get_nodeid();
x86_platform.is_untracked_pat_range = uv_is_untracked_pat_range;
if (!strcmp(oem_table_id, "UVL"))
uv_system_type = UV_LEGACY_APIC;
@@ -68,7 +77,7 @@ static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
uv_system_type = UV_X2APIC;
else if (!strcmp(oem_table_id, "UVH")) {
__get_cpu_var(x2apic_extra_bits) =
- early_get_nodeid() << (UV_APIC_PNODE_SHIFT - 1);
+ nodeid << (UV_APIC_PNODE_SHIFT - 1);
uv_system_type = UV_NON_UNIQUE_APIC;
return 1;
}
@@ -374,13 +383,13 @@ static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
enum map_type {map_wb, map_uc};
-static __init void map_high(char *id, unsigned long base, int shift,
- int max_pnode, enum map_type map_type)
+static __init void map_high(char *id, unsigned long base, int pshift,
+ int bshift, int max_pnode, enum map_type map_type)
{
unsigned long bytes, paddr;
- paddr = base << shift;
- bytes = (1UL << shift) * (max_pnode + 1);
+ paddr = base << pshift;
+ bytes = (1UL << bshift) * (max_pnode + 1);
printk(KERN_INFO "UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr,
paddr + bytes);
if (map_type == map_uc)
@@ -396,7 +405,7 @@ static __init void map_gru_high(int max_pnode)
gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR);
if (gru.s.enable) {
- map_high("GRU", gru.s.base, shift, max_pnode, map_wb);
+ map_high("GRU", gru.s.base, shift, shift, max_pnode, map_wb);
gru_start_paddr = ((u64)gru.s.base << shift);
gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1);
@@ -410,7 +419,7 @@ static __init void map_mmr_high(int max_pnode)
mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
if (mmr.s.enable)
- map_high("MMR", mmr.s.base, shift, max_pnode, map_uc);
+ map_high("MMR", mmr.s.base, shift, shift, max_pnode, map_uc);
}
static __init void map_mmioh_high(int max_pnode)
@@ -420,7 +429,8 @@ static __init void map_mmioh_high(int max_pnode)
mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR);
if (mmioh.s.enable)
- map_high("MMIOH", mmioh.s.base, shift, max_pnode, map_uc);
+ map_high("MMIOH", mmioh.s.base, shift, mmioh.s.m_io,
+ max_pnode, map_uc);
}
static __init void map_low_mmrs(void)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-10 09:48:01 +0000