diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-06 11:09:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-06 11:09:57 -0800 |
| commit | 77a0dd54ba3c86b00ab7079bc3be5d82395ecab2 (patch) | |
| tree | 7260d5349fe78251115decdebf1a8de33e2f14bb /arch/x86/platform | |
| parent | d7a5a18190d6f523b5d795bfd73f83cf13a3a383 (diff) | |
| parent | cfa60917f0ba6eca83f41aef3cb4a7dd7736ac9f (diff) | |
Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, UV, BAU: Extend for more than 16 cpus per socket
x86, UV: Fix the effect of extra bits in the hub nodeid register
x86, UV: Add common uv_early_read_mmr() function for reading MMRs
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/uv/tlb_uv.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index ba9caa808a9..df58e9cad96 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -1341,7 +1341,7 @@ uv_activation_descriptor_init(int node, int pnode) /* * each bau_desc is 64 bytes; there are 8 (UV_ITEMS_PER_DESCRIPTOR) - * per cpu; and up to 32 (UV_ADP_SIZE) cpu's per uvhub + * per cpu; and one per cpu on the uvhub (UV_ADP_SIZE) */ bau_desc = kmalloc_node(sizeof(struct bau_desc) * UV_ADP_SIZE * UV_ITEMS_PER_DESCRIPTOR, GFP_KERNEL, node); @@ -1490,7 +1490,7 @@ calculate_destination_timeout(void) /* * initialize the bau_control structure for each cpu */ -static void __init uv_init_per_cpu(int nuvhubs) +static int __init uv_init_per_cpu(int nuvhubs) { int i; int cpu; @@ -1507,7 +1507,7 @@ static void __init uv_init_per_cpu(int nuvhubs) struct bau_control *smaster = NULL; struct socket_desc { short num_cpus; - short cpu_number[16]; + short cpu_number[MAX_CPUS_PER_SOCKET]; }; struct uvhub_desc { unsigned short socket_mask; @@ -1540,6 +1540,10 @@ static void __init uv_init_per_cpu(int nuvhubs) sdp = &bdp->socket[socket]; sdp->cpu_number[sdp->num_cpus] = cpu; sdp->num_cpus++; + if (sdp->num_cpus > MAX_CPUS_PER_SOCKET) { + printk(KERN_EMERG "%d cpus per socket invalid\n", sdp->num_cpus); + return 1; + } } for (uvhub = 0; uvhub < nuvhubs; uvhub++) { if (!(*(uvhub_mask + (uvhub/8)) & (1 << (uvhub%8)))) @@ -1570,6 +1574,12 @@ static void __init uv_init_per_cpu(int nuvhubs) bcp->uvhub_master = hmaster; bcp->uvhub_cpu = uv_cpu_hub_info(cpu)-> blade_processor_id; + if (bcp->uvhub_cpu >= MAX_CPUS_PER_UVHUB) { + printk(KERN_EMERG + "%d cpus per uvhub invalid\n", + bcp->uvhub_cpu); + return 1; + } } nextsocket: socket++; @@ -1595,6 +1605,7 @@ nextsocket: bcp->congested_reps = congested_reps; bcp->congested_period = congested_period; } + return 0; } /* @@ -1625,7 +1636,10 @@ static int __init uv_bau_init(void) spin_lock_init(&disable_lock); congested_cycles = microsec_2_cycles(congested_response_us); - uv_init_per_cpu(nuvhubs); + if (uv_init_per_cpu(nuvhubs)) { + nobau = 1; + return 0; + } uv_partition_base_pnode = 0x7fffffff; for (uvhub = 0; uvhub < nuvhubs; uvhub++) |