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paravirt: add an "mm" argument to alloc_pt

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It's useful to know which mm is allocating a pagetable.  Xen uses this
to determine whether the pagetable being added to is pinned or not.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
This commit is contained in:
Jeremy Fitzhardinge 2007-07-17 18:37:03 -07:00 committed by Jeremy Fitzhardinge
parent 810bab448e
commit fdb4c338c8
5 changed files with 9 additions and 9 deletions
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2
arch/i386/kernel/vmi.c
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@ -362,7 +362,7 @@ static void *vmi_kmap_atomic_pte(struct page *page, enum km_type type)
}
#endif
static void vmi_allocate_pt(u32 pfn)
static void vmi_allocate_pt(struct mm_struct *mm, u32 pfn)
{
vmi_set_page_type(pfn, VMI_PAGE_L1);
vmi_ops.allocate_page(pfn, VMI_PAGE_L1, 0, 0, 0);

2
arch/i386/mm/init.c
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@ -87,7 +87,7 @@ static pte_t * __init one_page_table_init(pmd_t *pmd)
if (!(pmd_val(*pmd) & _PAGE_PRESENT)) {
pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
paravirt_alloc_pt(__pa(page_table) >> PAGE_SHIFT);
paravirt_alloc_pt(&init_mm, __pa(page_table) >> PAGE_SHIFT);
set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
BUG_ON(page_table != pte_offset_kernel(pmd, 0));
}

2
arch/i386/mm/pageattr.c
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@ -60,7 +60,7 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot,
address = __pa(address);
addr = address & LARGE_PAGE_MASK;
pbase = (pte_t *)page_address(base);
paravirt_alloc_pt(page_to_pfn(base));
paravirt_alloc_pt(&init_mm, page_to_pfn(base));
for (i = 0; i < PTRS_PER_PTE; i++, addr += PAGE_SIZE) {
set_pte(&pbase[i], pfn_pte(addr >> PAGE_SHIFT,
addr == address ? prot : ref_prot));

6
include/asm-i386/paravirt.h
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@ -173,7 +173,7 @@ struct paravirt_ops
unsigned long va);
/* Hooks for allocating/releasing pagetable pages */
void (*alloc_pt)(u32 pfn);
void (*alloc_pt)(struct mm_struct *mm, u32 pfn);
void (*alloc_pd)(u32 pfn);
void (*alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
void (*release_pt)(u32 pfn);
@ -725,9 +725,9 @@ static inline void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
PVOP_VCALL3(flush_tlb_others, &cpumask, mm, va);
}
static inline void paravirt_alloc_pt(unsigned pfn)
static inline void paravirt_alloc_pt(struct mm_struct *mm, unsigned pfn)
{
PVOP_VCALL1(alloc_pt, pfn);
PVOP_VCALL2(alloc_pt, mm, pfn);
}
static inline void paravirt_release_pt(unsigned pfn)
{

6
include/asm-i386/pgalloc.h
View File

@ -7,7 +7,7 @@
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else
#define paravirt_alloc_pt(pfn) do { } while (0)
#define paravirt_alloc_pt(mm, pfn) do { } while (0)
#define paravirt_alloc_pd(pfn) do { } while (0)
#define paravirt_alloc_pd(pfn) do { } while (0)
#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0)
@ -17,13 +17,13 @@
#define pmd_populate_kernel(mm, pmd, pte) \
do { \
paravirt_alloc_pt(__pa(pte) >> PAGE_SHIFT); \
paravirt_alloc_pt(mm, __pa(pte) >> PAGE_SHIFT); \
set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))); \
} while (0)
#define pmd_populate(mm, pmd, pte) \
do { \
paravirt_alloc_pt(page_to_pfn(pte)); \
paravirt_alloc_pt(mm, page_to_pfn(pte)); \
set_pmd(pmd, __pmd(_PAGE_TABLE + \
((unsigned long long)page_to_pfn(pte) << \
(unsigned long long) PAGE_SHIFT))); \