BMC/Intel-BMC/linux.git/arch/arm64/mm/Makefile, branch dev

arm64: remove another unnecessary libfdt include path

2015-07-06T16:15:14+00:00

Patch 63a4aea55670 ("of: clean-up unnecessary libfdt include paths") removed all explicit libfdt include paths, since those are no longer necessary after the latest dtc upgrade. However, this one snuck in during the same merge window. Remove it. Signed-off-by: Ard Biesheuvel Signed-off-by: Catalin Marinas

arm64: use fixmap region for permanent FDT mapping

2015-06-02T15:31:33+00:00

Currently, the FDT blob needs to be in the same 512 MB region as the kernel, so that it can be mapped into the kernel virtual memory space very early on using a minimal set of statically allocated translation tables. Now that we have early fixmap support, we can relax this restriction, by moving the permanent FDT mapping to the fixmap region instead. This way, the FDT blob may be anywhere in memory. This also moves the vetting of the FDT to mmu.c, since the early init code in head.S does not handle mapping of the FDT anymore. At the same time, fix up some comments in head.S that have gone stale. Reviewed-by: Mark Rutland Tested-by: Mark Rutland Signed-off-by: Ard Biesheuvel Signed-off-by: Catalin Marinas

arm64: add support to dump the kernel page tables

2014-11-26T17:19:18+00:00

In a similar manner to arm, it's useful to be able to dump the page tables to verify permissions and memory types. Add a debugfs file to check the page tables. Acked-by: Steve Capper Tested-by: Steve Capper Reviewed-by: Mark Rutland Tested-by: Mark Rutland Signed-off-by: Laura Abbott [will: s/BUFFERABLE/NORMAL-NC/] Signed-off-by: Will Deacon

arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support

2014-09-08T13:39:18+00:00

In a similar fashion to other architecture, add the infrastructure and Kconfig to enable DEBUG_SET_MODULE_RONX support. When enabled, module ranges will be marked read-only/no-execute as appropriate. Signed-off-by: Laura Abbott [will: fixed off-by-one in module end check] Signed-off-by: Will Deacon

arm64: mm: Optimise tlb flush logic where we have >4K granule

2014-05-09T16:00:48+00:00

The tlb maintainence functions: __cpu_flush_user_tlb_range and __cpu_flush_kern_tlb_range do not take into consideration the page granule when looping through the address range, and repeatedly flush tlb entries for the same page when operating with 64K pages. This patch re-works the logic s.t. we instead advance the loop by 1 << (PAGE_SHIFT - 12), so avoid repeating ourselves. Also the routines have been converted from assembler to static inline functions to aid with legibility and potential compiler optimisations. The isb() has been removed from flush_tlb_kernel_range(.) as it is only needed when changing the execute permission of a mapping. If one needs to set an area of the kernel as execute/non-execute an isb() must be inserted after the call to flush_tlb_kernel_range. Cc: Laura Abbott Signed-off-by: Steve Capper Acked-by: Will Deacon Signed-off-by: Catalin Marinas

ARM64: mm: HugeTLB support.

2013-06-14T08:52:40+00:00

Add huge page support to ARM64, different huge page sizes are supported depending on the size of normal pages: PAGE_SIZE is 4KB: 2MB - (pmds) these can be allocated at any time. 1024MB - (puds) usually allocated on bootup with the command line with something like: hugepagesz=1G hugepages=6 PAGE_SIZE is 64KB: 512MB - (pmds) usually allocated on bootup via command line. Signed-off-by: Steve Capper Acked-by: Catalin Marinas

arm64: Build infrastructure

2012-09-17T12:42:21+00:00

This patch adds Makefile and Kconfig files required for building an AArch64 kernel. Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas Acked-by: Tony Lindgren Acked-by: Nicolas Pitre Acked-by: Olof Johansson Acked-by: Santosh Shilimkar Acked-by: Arnd Bergmann