Messages in this thread Patch in this message | | | From | Mark Salter <> | Subject | [PATCH v2 4/5] arm64: initialize pgprot info earlier in boot | Date | Mon, 6 Jan 2014 21:35:19 -0500 |
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Presently, paging_init() calls init_mem_pgprot() to initialize pgprot values used by macros such as PAGE_KERNEL, PAGE_KERNEL_EXEC, etc. The new fixmap and early_ioremap support also needs to use these macros before paging_init() is called. This patch moves the init_mem_pgprot() call out of paging_init() and into setup_arch() so that pgprot_default gets initialized in time for fixmap and early_ioremap.
Signed-off-by: Mark Salter <msalter@redhat.com> CC: linux-arm-kernel@lists.infradead.org CC: Catalin Marinas <catalin.marinas@arm.com> CC: Will Deacon <will.deacon@arm.com> --- arch/arm64/include/asm/mmu.h | 1 + arch/arm64/kernel/setup.c | 2 ++ arch/arm64/mm/mmu.c | 3 +-- 3 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/include/asm/mmu.h b/arch/arm64/include/asm/mmu.h index 2494fc0..f600d40 100644 --- a/arch/arm64/include/asm/mmu.h +++ b/arch/arm64/include/asm/mmu.h @@ -27,5 +27,6 @@ typedef struct { extern void paging_init(void); extern void setup_mm_for_reboot(void); extern void __iomem *early_io_map(phys_addr_t phys, unsigned long virt); +extern void init_mem_pgprot(void); #endif diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index bd9bbd0..029ecfe 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -221,6 +221,8 @@ void __init setup_arch(char **cmdline_p) *cmdline_p = boot_command_line; + init_mem_pgprot(); + parse_early_param(); arm64_memblock_init(); diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index f557ebb..541c782 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -125,7 +125,7 @@ early_param("cachepolicy", early_cachepolicy); /* * Adjust the PMD section entries according to the CPU in use. */ -static void __init init_mem_pgprot(void) +void __init init_mem_pgprot(void) { pteval_t default_pgprot; int i; @@ -349,7 +349,6 @@ void __init paging_init(void) { void *zero_page; - init_mem_pgprot(); map_mem(); /* -- 1.8.3.1
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