kernel.git/arch/x86/platform, branch linux-2.6.37.y

x86, UV, BAU: Extend for more than 16 cpus per socket

2011-02-17T23:13:36Z

commit cfa60917f0ba6eca83f41aef3cb4a7dd7736ac9f upstream. Fix a hard-coded limit of a maximum of 16 cpu's per socket. The UV Broadcast Assist Unit code initializes by scanning the cpu topology of the system and assigning a master cpu for each socket and UV hub. That scan had an assumption of a limit of 16 cpus per socket. With Westmere we are going over that limit. The UV hub hardware will allow up to 32. If the scan finds the system has gone over that limit it returns an error and we print a warning and fall back to doing TLB shootdowns without the BAU. Signed-off-by: Cliff Wickman LKML-Reference: Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman

x86: UV: Address interrupt/IO port operation conflict

2010-11-18T09:41:25Z

This patch for SGI UV systems addresses a problem whereby interrupt transactions being looped back from a local IOH, through the hub to a local CPU can (erroneously) conflict with IO port operations and other transactions. To workaound this we set a high bit in the APIC IDs used for interrupts. This bit appears to be ignored by the sockets, but it avoids the conflict in the hub. Signed-off-by: Dimitri Sivanich LKML-Reference: <20101116222352.GA8155@sgi.com> Signed-off-by: Ingo Molnar ___ arch/x86/include/asm/uv/uv_hub.h | 4 ++++ arch/x86/include/asm/uv/uv_mmrs.h | 19 ++++++++++++++++++- arch/x86/kernel/apic/x2apic_uv_x.c | 25 +++++++++++++++++++++++-- arch/x86/platform/uv/tlb_uv.c | 2 +- arch/x86/platform/uv/uv_time.c | 4 +++- 5 files changed, 49 insertions(+), 5 deletions(-)

x86: Remove unnecessary casts of void ptr returning alloc function return values

2010-11-10T08:13:00Z

The [vk][cmz]alloc(_node) family of functions return void pointers which it's completely unnecessary/pointless to cast to other pointer types since that happens implicitly. This patch removes such casts from arch/x86. Signed-off-by: Jesper Juhl Cc: trivial@kernel.org Cc: amd64-microcode@amd64.org Cc: Andreas Herrmann LKML-Reference: Signed-off-by: Ingo Molnar

x86: Move olpc to platform

2010-10-27T15:22:16Z

Signed-off-by: Thomas Gleixner Cc: Andres Salomon

x86: Move uv to platform

2010-10-27T12:30:02Z

Signed-off-by: Thomas Gleixner Cc: Mike Travis

x86: Move mrst to platform

2010-10-27T12:30:01Z

Signed-off-by: Thomas Gleixner Cc: Jacob Pan Cc: Alan Cox

x86: Move scx200 to platform

2010-10-27T12:30:01Z

Signed-off-by: Thomas Gleixner

x86: Move visws to platform

2010-10-27T12:30:01Z

Signed-off-by: Thomas Gleixner

x86: Move efi to platform

2010-10-27T12:30:01Z

Signed-off-by: Thomas Gleixner Cc: Huang Ying

x86: Move sfi to platform

2010-10-27T12:30:01Z

Signed-off-by: Thomas Gleixner Cc: Len Brown Cc: Alan Cox