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| author | James Hogan <james.hogan@imgtec.com> | 2015-10-16 16:33:13 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2017-02-03 15:18:56 +0000 |
| commit | ccf015166ddbbd4c43a16d6871ea15f1fcf51ccc (patch) | |
| tree | d7a6835ed4fae62a859ef73c3310bec05bed10fc /arch/mips/mm | |
| parent | 814f91bf3ea0962e4f802324766bf301ef6f5431 (diff) | |
| download | linux-stable-ccf015166ddbbd4c43a16d6871ea15f1fcf51ccc.tar.gz linux-stable-ccf015166ddbbd4c43a16d6871ea15f1fcf51ccc.tar.bz2 linux-stable-ccf015166ddbbd4c43a16d6871ea15f1fcf51ccc.zip | |
MIPS: Export pgd/pmd symbols for KVM
Export pmd_init(), invalid_pmd_table and tlbmiss_handler_setup_pgd to
GPL kernel modules so that MIPS KVM can use the inline page table
management functions and switch between page tables:
- pmd_init() will be used directly by KVM to initialise newly allocated
pmd tables with invalid lower level table pointers.
- invalid_pmd_table is used by pud_present(), pud_none(), and
pud_clear(), which KVM will use to test and clear pud entries.
- tlbmiss_handler_setup_pgd() will be called by KVM entry code to switch
to the appropriate GVA page tables.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Diffstat (limited to 'arch/mips/mm')
| -rw-r--r-- | arch/mips/mm/init.c | 1 | ||||
| -rw-r--r-- | arch/mips/mm/pgtable-64.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/tlbex.c | 5 |
3 files changed, 7 insertions, 1 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index e86ebcf5c071..653569bc0da7 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -538,5 +538,6 @@ unsigned long pgd_current[NR_CPUS]; pgd_t swapper_pg_dir[_PTRS_PER_PGD] __section(.bss..swapper_pg_dir); #ifndef __PAGETABLE_PMD_FOLDED pmd_t invalid_pmd_table[PTRS_PER_PMD] __page_aligned_bss; +EXPORT_SYMBOL_GPL(invalid_pmd_table); #endif pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned_bss; diff --git a/arch/mips/mm/pgtable-64.c b/arch/mips/mm/pgtable-64.c index ce4473e7c0d2..0ae7b28b4db5 100644 --- a/arch/mips/mm/pgtable-64.c +++ b/arch/mips/mm/pgtable-64.c @@ -6,6 +6,7 @@ * Copyright (C) 1999, 2000 by Silicon Graphics * Copyright (C) 2003 by Ralf Baechle */ +#include <linux/export.h> #include <linux/init.h> #include <linux/mm.h> #include <asm/fixmap.h> @@ -60,6 +61,7 @@ void pmd_init(unsigned long addr, unsigned long pagetable) p[-1] = pagetable; } while (p != end); } +EXPORT_SYMBOL_GPL(pmd_init); #endif pmd_t mk_pmd(struct page *page, pgprot_t prot) diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index 55ce39606cb8..dc7bb1506103 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -22,6 +22,7 @@ */ #include <linux/bug.h> +#include <linux/export.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/smp.h> @@ -1536,7 +1537,9 @@ static void build_loongson3_tlb_refill_handler(void) extern u32 handle_tlbl[], handle_tlbl_end[]; extern u32 handle_tlbs[], handle_tlbs_end[]; extern u32 handle_tlbm[], handle_tlbm_end[]; -extern u32 tlbmiss_handler_setup_pgd_start[], tlbmiss_handler_setup_pgd[]; +extern u32 tlbmiss_handler_setup_pgd_start[]; +extern u32 tlbmiss_handler_setup_pgd[]; +EXPORT_SYMBOL_GPL(tlbmiss_handler_setup_pgd); extern u32 tlbmiss_handler_setup_pgd_end[]; static void build_setup_pgd(void) |