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author | Mike Travis <mike.travis@hpe.com> | 2017-03-21 18:16:47 -0500 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-03-22 07:41:10 +0100 |
commit | ad4830051aac0b967add82ac168f49edf11f01a0 (patch) | |
tree | 35b78ccae0885291e3fbb163c9aaf49b21232a68 /arch/x86/include/asm | |
parent | 97da3854c526d3a6ee05c849c96e48d21527606c (diff) | |
download | op-kernel-dev-ad4830051aac0b967add82ac168f49edf11f01a0.zip op-kernel-dev-ad4830051aac0b967add82ac168f49edf11f01a0.tar.gz |
x86/platform/uv: Fix calculation of Global Physical Address
The calculation of the global physical address (GPA) on UV4 is
incorrect. The gnode_extra/upper global offset should only be
applied for fixed address space systems (UV1..3).
Tested-by: John Estabrook <john.estabrook@hpe.com>
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Cc: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Cc: John Estabrook <estabrook@sgi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <russ.anderson@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170321231646.667689538@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm')
-rw-r--r-- | arch/x86/include/asm/uv/uv_hub.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h index 72e8300..9cffb44 100644 --- a/arch/x86/include/asm/uv/uv_hub.h +++ b/arch/x86/include/asm/uv/uv_hub.h @@ -485,15 +485,17 @@ static inline unsigned long uv_soc_phys_ram_to_gpa(unsigned long paddr) if (paddr < uv_hub_info->lowmem_remap_top) paddr |= uv_hub_info->lowmem_remap_base; - paddr |= uv_hub_info->gnode_upper; - if (m_val) + + if (m_val) { + paddr |= uv_hub_info->gnode_upper; paddr = ((paddr << uv_hub_info->m_shift) >> uv_hub_info->m_shift) | ((paddr >> uv_hub_info->m_val) << uv_hub_info->n_lshift); - else + } else { paddr |= uv_soc_phys_ram_to_nasid(paddr) << uv_hub_info->gpa_shift; + } return paddr; } |