Re: [PATCH RFC] ARM: extend fixmap mapping region to support 30 CPUs

2014-03-24 Thread Nicolas Pitre
On Mon, 24 Mar 2014, Liu Hua wrote: > In 32-bit ARM systems, the fixmap mapping region can support > no more than 14 CPUs(total: 896k; one CPU: 64K). And we can > configure NR_CPUS up to 32. So there is a mismatch. > > This patch extends the fixmapping region downwards to boundary > of DMA mappin

[PATCH RFC] ARM: extend fixmap mapping region to support 30 CPUs

2014-03-24 Thread Liu Hua
In 32-bit ARM systems, the fixmap mapping region can support no more than 14 CPUs(total: 896k; one CPU: 64K). And we can configure NR_CPUS up to 32. So there is a mismatch. This patch extends the fixmapping region downwards to boundary of DMA mapping region(0xffe0-0xfffe). Then the fixmap