Commit 814f91bf authored by James Hogan's avatar James Hogan

MIPS: Move pgd_alloc() out of header

pgd_alloc() references init_mm which is not exported to modules. In
order for KVM to be able to use pgd_alloc() to allocate GVA page tables,
move pgd_alloc() into a new pgtable.c file and export it to modules.
Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
Acked-by: default avatarRalf 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
parent 0c744ea4
...@@ -43,21 +43,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) ...@@ -43,21 +43,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
* Initialize a new pgd / pmd table with invalid pointers. * Initialize a new pgd / pmd table with invalid pointers.
*/ */
extern void pgd_init(unsigned long page); extern void pgd_init(unsigned long page);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *ret, *init;
ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
if (ret) {
init = pgd_offset(&init_mm, 0UL);
pgd_init((unsigned long)ret);
memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
}
return ret;
}
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{ {
......
...@@ -4,7 +4,7 @@ ...@@ -4,7 +4,7 @@
obj-y += cache.o dma-default.o extable.o fault.o \ obj-y += cache.o dma-default.o extable.o fault.o \
gup.o init.o mmap.o page.o page-funcs.o \ gup.o init.o mmap.o page.o page-funcs.o \
tlbex.o tlbex-fault.o tlb-funcs.o pgtable.o tlbex.o tlbex-fault.o tlb-funcs.o
ifdef CONFIG_CPU_MICROMIPS ifdef CONFIG_CPU_MICROMIPS
obj-y += uasm-micromips.o obj-y += uasm-micromips.o
......
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/export.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <asm/pgalloc.h>
pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *ret, *init;
ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
if (ret) {
init = pgd_offset(&init_mm, 0UL);
pgd_init((unsigned long)ret);
memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
}
return ret;
}
EXPORT_SYMBOL_GPL(pgd_alloc);
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