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Subject[PATCH 03 of 11] x86: add mm parameter to paravirt_alloc_pd
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Add mm to paravirt_alloc_pd, partly to make it consistent with
paravirt_alloc_pt, and because later changes will make use of it.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
---
arch/x86/kernel/vmi_32.c | 2 +-
arch/x86/mm/init_32.c | 4 ++--
arch/x86/mm/pgtable_32.c | 4 +++-
include/asm-x86/paravirt.h | 6 +++---
include/asm-x86/pgalloc_32.h | 3 +--
5 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -398,7 +398,7 @@ static void vmi_allocate_pt(struct mm_st
vmi_ops.allocate_page(pfn, VMI_PAGE_L1, 0, 0, 0);
}

-static void vmi_allocate_pd(u32 pfn)
+static void vmi_allocate_pd(struct mm_struct *mm, u32 pfn)
{
/*
* This call comes in very early, before mem_map is setup.
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -67,7 +67,7 @@ static pmd_t * __init one_md_table_init(
if (!(pgd_val(*pgd) & _PAGE_PRESENT)) {
pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);

- paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT);
+ paravirt_alloc_pd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT);
set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
pud = pud_offset(pgd, 0);
BUG_ON(pmd_table != pmd_offset(pud, 0));
@@ -378,7 +378,7 @@ void __init native_pagetable_setup_start

pte_clear(NULL, va, pte);
}
- paravirt_alloc_pd(__pa(swapper_pg_dir) >> PAGE_SHIFT);
+ paravirt_alloc_pd(&init_mm, __pa(base) >> PAGE_SHIFT);
}

void __init native_pagetable_setup_done(pgd_t *base)
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -321,13 +321,15 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
if (PTRS_PER_PMD == 1 || !pgd)
return pgd;

+ mm->pgd = pgd; /* so that alloc_pd can use it */
+
for (i = 0; i < UNSHARED_PTRS_PER_PGD; ++i) {
pmd_t *pmd = pmd_cache_alloc(i);

if (!pmd)
goto out_oom;

- paravirt_alloc_pd(__pa(pmd) >> PAGE_SHIFT);
+ paravirt_alloc_pd(mm, __pa(pmd) >> PAGE_SHIFT);
set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
}
return pgd;
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -221,7 +221,7 @@ struct pv_mmu_ops {

/* Hooks for allocating/releasing pagetable pages */
void (*alloc_pt)(struct mm_struct *mm, u32 pfn);
- void (*alloc_pd)(u32 pfn);
+ void (*alloc_pd)(struct mm_struct *mm, u32 pfn);
void (*alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
void (*release_pt)(u32 pfn);
void (*release_pd)(u32 pfn);
@@ -903,9 +903,9 @@ static inline void paravirt_release_pt(u
PVOP_VCALL1(pv_mmu_ops.release_pt, pfn);
}

-static inline void paravirt_alloc_pd(unsigned pfn)
+static inline void paravirt_alloc_pd(struct mm_struct *mm, unsigned pfn)
{
- PVOP_VCALL1(pv_mmu_ops.alloc_pd, pfn);
+ PVOP_VCALL2(pv_mmu_ops.alloc_pd, mm, pfn);
}

static inline void paravirt_alloc_pd_clone(unsigned pfn, unsigned clonepfn,
diff --git a/include/asm-x86/pgalloc_32.h b/include/asm-x86/pgalloc_32.h
--- a/include/asm-x86/pgalloc_32.h
+++ b/include/asm-x86/pgalloc_32.h
@@ -8,8 +8,7 @@
#include <asm/paravirt.h>
#else
#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(mm, pfn) do { } while (0)
#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0)
#define paravirt_release_pt(pfn) do { } while (0)
#define paravirt_release_pd(pfn) do { } while (0)



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