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Subject[PATCH] linux-2.4.20_summit_A0 (2/4)
From
Date
Marcelo,
2/4: Logical/Physical apicid additions

Please apply.

Thanks
-john

diff -Nru a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
--- a/arch/i386/kernel/mpparse.c Mon Dec 2 11:45:12 2002
+++ b/arch/i386/kernel/mpparse.c Mon Dec 2 11:45:12 2002
@@ -65,9 +65,12 @@

/* Bitmask of physically existing CPUs */
unsigned long phys_cpu_present_map;
+unsigned long logical_cpu_present_map;

unsigned char esr_disable = 0;

+unsigned char raw_phys_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID };
+
/*
* Intel MP BIOS table parsing routines:
*/
@@ -231,11 +234,9 @@
}
ver = m->mpc_apicver;

- if (clustered_apic_mode == CLUSTERED_APIC_NUMAQ) {
- phys_cpu_present_map |= (logical_apicid&0xf) << (4*quad);
- } else {
- phys_cpu_present_map |= 1 << m->mpc_apicid;
- }
+ logical_cpu_present_map |= 1 << (num_processors-1);
+ phys_cpu_present_map |= apicid_to_phys_cpu_present(m->mpc_apicid);
+
/*
* Validate version
*/
@@ -244,6 +245,7 @@
ver = 0x10;
}
apic_version[m->mpc_apicid] = ver;
+ raw_phys_apicid[num_processors - 1] = m->mpc_apicid;
}

static void __init MP_bus_info (struct mpc_config_bus *m)
@@ -511,6 +513,7 @@

if (clustered_apic_mode){
esr_disable = 1;
+ phys_cpu_present_map = logical_cpu_present_map;
}

if (!num_processors)
diff -Nru a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
--- a/arch/i386/kernel/smpboot.c Mon Dec 2 11:45:12 2002
+++ b/arch/i386/kernel/smpboot.c Mon Dec 2 11:45:12 2002
@@ -525,12 +525,12 @@
int apicid, cpu;

for (apicid = 0; apicid < MAX_APICID; apicid++) {
- physical_apicid_2_cpu[apicid] = -1;
- logical_apicid_2_cpu[apicid] = -1;
+ physical_apicid_2_cpu[apicid] = BAD_APICID;
+ logical_apicid_2_cpu[apicid] = BAD_APICID;
}
for (cpu = 0; cpu < NR_CPUS; cpu++) {
- cpu_2_physical_apicid[cpu] = -1;
- cpu_2_logical_apicid[cpu] = -1;
+ cpu_2_physical_apicid[cpu] = BAD_APICID;
+ cpu_2_logical_apicid[cpu] = BAD_APICID;
}
}

@@ -540,7 +540,7 @@
* else physical apic ids
*/
{
- if (clustered_apic_mode) {
+ if (clustered_apic_mode == CLUSTERED_APIC_NUMAQ) {
logical_apicid_2_cpu[apicid] = cpu;
cpu_2_logical_apicid[cpu] = apicid;
} else {
@@ -555,12 +555,12 @@
* else physical apic ids
*/
{
- if (clustered_apic_mode) {
- logical_apicid_2_cpu[apicid] = -1;
- cpu_2_logical_apicid[cpu] = -1;
+ if (clustered_apic_mode == CLUSTERED_APIC_NUMAQ) {
+ logical_apicid_2_cpu[apicid] = BAD_APICID;
+ cpu_2_logical_apicid[cpu] = BAD_APICID;
} else {
- physical_apicid_2_cpu[apicid] = -1;
- cpu_2_physical_apicid[cpu] = -1;
+ physical_apicid_2_cpu[apicid] = BAD_APICID;
+ cpu_2_physical_apicid[cpu] = BAD_APICID;
}
}

@@ -785,7 +785,7 @@
unsigned long boot_error = 0;
int timeout, cpu;
unsigned long start_eip;
- unsigned short nmi_high, nmi_low;
+ unsigned short nmi_high = 0, nmi_low = 0;

cpu = ++cpucount;
/*
@@ -1111,7 +1111,7 @@
if (apicid == boot_cpu_apicid)
continue;

- if (!(phys_cpu_present_map & (1 << bit)))
+ if (!(phys_cpu_present_map & (1ul << bit)))
continue;
if ((max_cpus >= 0) && (max_cpus <= cpucount+1))
continue;
@@ -1122,9 +1122,9 @@
* Make sure we unmap all failed CPUs
*/
if ((boot_apicid_to_cpu(apicid) == -1) &&
- (phys_cpu_present_map & (1 << bit)))
- printk("CPU #%d not responding - cannot use it.\n",
- apicid);
+ (phys_cpu_present_map & (1ul << bit)))
+ printk("CPU #%d/0x%02x not responding - cannot use it.\n",
+ bit, apicid);
}

/*
diff -Nru a/include/asm-i386/smpboot.h b/include/asm-i386/smpboot.h
--- a/include/asm-i386/smpboot.h Mon Dec 2 11:45:12 2002
+++ b/include/asm-i386/smpboot.h Mon Dec 2 11:45:12 2002
@@ -42,13 +42,15 @@
#endif /* CONFIG_X86_LOCAL_APIC */

#define apic_broadcast_id (APIC_BROADCAST_ID_APIC)
-
+#define BAD_APICID 0xFFu

#define TRAMPOLINE_LOW phys_to_virt((clustered_apic_mode == CLUSTERED_APIC_NUMAQ)?0x8:0x467)
#define TRAMPOLINE_HIGH phys_to_virt((clustered_apic_mode == CLUSTERED_APIC_NUMAQ)?0xa:0x469)

#define boot_cpu_apicid ((clustered_apic_mode == CLUSTERED_APIC_NUMAQ)?boot_cpu_logical_apicid:boot_cpu_physical_apicid)

+extern unsigned char raw_phys_apicid[NR_CPUS];
+
/*
* How to map from the cpu_present_map
*/
@@ -57,6 +59,13 @@
if(clustered_apic_mode == CLUSTERED_APIC_NUMAQ)
return (mps_cpu/4)*16 + (1<<(mps_cpu%4));
return mps_cpu;
+}
+
+static inline unsigned long apicid_to_phys_cpu_present(int apicid)
+{
+ if(clustered_apic_mode)
+ return 1UL << (((apicid >> 4) << 2) + (apicid & 0x3));
+ return 1UL << apicid;
}

#define physical_to_logical_apicid(phys_apic) ( (1ul << (phys_apic & 0x3)) | (phys_apic & 0xF0u) )


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