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Commit dc7acbb2 authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'upstream/tidy-xen-mmu-2.6.39' of... 

Merge branch 'upstream/tidy-xen-mmu-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen

* 'upstream/tidy-xen-mmu-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  xen: fix compile without CONFIG_XEN_DEBUG_FS
  Use arbitrary_virt_to_machine() to deal with ioremapped pud updates.
  Use arbitrary_virt_to_machine() to deal with ioremapped pmd updates.
  xen/mmu: remove all ad-hoc stats stuff
  xen: use normal virt_to_machine for ptes
  xen: make a pile of mmu pvop functions static
  vmalloc: remove vmalloc_sync_all() from alloc_vm_area()
  xen: condense everything onto xen_set_pte
  xen: use mmu_update for xen_set_pte_at()
  xen: drop all the special iomap pte paths.
parents f01e1af4 4bf0ff24
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arch/x86/xen/mmu.c
View file @ dc7acbb2
...@@ -75,67 +75,12 @@ ...@@ -75,67 +75,12 @@
#include "mmu.h" #include "mmu.h"
#include "debugfs.h" #include "debugfs.h"
#define MMU_UPDATE_HISTO 30
/* /*
* Protects atomic reservation decrease/increase against concurrent increases. * Protects atomic reservation decrease/increase against concurrent increases.
* Also protects non-atomic updates of current_pages and balloon lists. * Also protects non-atomic updates of current_pages and balloon lists.
*/ */
DEFINE_SPINLOCK(xen_reservation_lock); DEFINE_SPINLOCK(xen_reservation_lock);
#ifdef CONFIG_XEN_DEBUG_FS
static struct {
u32 pgd_update;
u32 pgd_update_pinned;
u32 pgd_update_batched;
u32 pud_update;
u32 pud_update_pinned;
u32 pud_update_batched;
u32 pmd_update;
u32 pmd_update_pinned;
u32 pmd_update_batched;
u32 pte_update;
u32 pte_update_pinned;
u32 pte_update_batched;
u32 mmu_update;
u32 mmu_update_extended;
u32 mmu_update_histo[MMU_UPDATE_HISTO];
u32 prot_commit;
u32 prot_commit_batched;
u32 set_pte_at;
u32 set_pte_at_batched;
u32 set_pte_at_pinned;
u32 set_pte_at_current;
u32 set_pte_at_kernel;
} mmu_stats;
static u8 zero_stats;
static inline void check_zero(void)
{
if (unlikely(zero_stats)) {
memset(&mmu_stats, 0, sizeof(mmu_stats));
zero_stats = 0;
}
}
#define ADD_STATS(elem, val) \
do { check_zero(); mmu_stats.elem += (val); } while(0)
#else /* !CONFIG_XEN_DEBUG_FS */
#define ADD_STATS(elem, val) do { (void)(val); } while(0)
#endif /* CONFIG_XEN_DEBUG_FS */
/* /*
* Identity map, in addition to plain kernel map. This needs to be * Identity map, in addition to plain kernel map. This needs to be
* large enough to allocate page table pages to allocate the rest. * large enough to allocate page table pages to allocate the rest.
...@@ -243,11 +188,6 @@ static bool xen_page_pinned(void *ptr) ...@@ -243,11 +188,6 @@ static bool xen_page_pinned(void *ptr)
return PagePinned(page); return PagePinned(page);
} }
static bool xen_iomap_pte(pte_t pte)
{
return pte_flags(pte) & _PAGE_IOMAP;
}
void xen_set_domain_pte(pte_t *ptep, pte_t pteval, unsigned domid) void xen_set_domain_pte(pte_t *ptep, pte_t pteval, unsigned domid)
{ {
struct multicall_space mcs; struct multicall_space mcs;
...@@ -257,7 +197,7 @@ void xen_set_domain_pte(pte_t *ptep, pte_t pteval, unsigned domid) ...@@ -257,7 +197,7 @@ void xen_set_domain_pte(pte_t *ptep, pte_t pteval, unsigned domid)
u = mcs.args; u = mcs.args;
/* ptep might be kmapped when using 32-bit HIGHPTE */ /* ptep might be kmapped when using 32-bit HIGHPTE */
u->ptr = arbitrary_virt_to_machine(ptep).maddr; u->ptr = virt_to_machine(ptep).maddr;
u->val = pte_val_ma(pteval); u->val = pte_val_ma(pteval);
MULTI_mmu_update(mcs.mc, mcs.args, 1, NULL, domid); MULTI_mmu_update(mcs.mc, mcs.args, 1, NULL, domid);
...@@ -266,11 +206,6 @@ void xen_set_domain_pte(pte_t *ptep, pte_t pteval, unsigned domid) ...@@ -266,11 +206,6 @@ void xen_set_domain_pte(pte_t *ptep, pte_t pteval, unsigned domid)
} }
EXPORT_SYMBOL_GPL(xen_set_domain_pte); EXPORT_SYMBOL_GPL(xen_set_domain_pte);
static void xen_set_iomap_pte(pte_t *ptep, pte_t pteval)
{
xen_set_domain_pte(ptep, pteval, DOMID_IO);
}
static void xen_extend_mmu_update(const struct mmu_update *update) static void xen_extend_mmu_update(const struct mmu_update *update)
{ {
struct multicall_space mcs; struct multicall_space mcs;
...@@ -279,27 +214,17 @@ static void xen_extend_mmu_update(const struct mmu_update *update) ...@@ -279,27 +214,17 @@ static void xen_extend_mmu_update(const struct mmu_update *update)
mcs = xen_mc_extend_args(__HYPERVISOR_mmu_update, sizeof(*u)); mcs = xen_mc_extend_args(__HYPERVISOR_mmu_update, sizeof(*u));
if (mcs.mc != NULL) { if (mcs.mc != NULL) {
ADD_STATS(mmu_update_extended, 1);
ADD_STATS(mmu_update_histo[mcs.mc->args[1]], -1);
mcs.mc->args[1]++; mcs.mc->args[1]++;
if (mcs.mc->args[1] < MMU_UPDATE_HISTO)
ADD_STATS(mmu_update_histo[mcs.mc->args[1]], 1);
else
ADD_STATS(mmu_update_histo[0], 1);
} else { } else {
ADD_STATS(mmu_update, 1);
mcs = __xen_mc_entry(sizeof(*u)); mcs = __xen_mc_entry(sizeof(*u));
MULTI_mmu_update(mcs.mc, mcs.args, 1, NULL, DOMID_SELF); MULTI_mmu_update(mcs.mc, mcs.args, 1, NULL, DOMID_SELF);
ADD_STATS(mmu_update_histo[1], 1);
} }
u = mcs.args; u = mcs.args;
*u = *update; *u = *update;
} }
void xen_set_pmd_hyper(pmd_t *ptr, pmd_t val) static void xen_set_pmd_hyper(pmd_t *ptr, pmd_t val)
{ {
struct mmu_update u; struct mmu_update u;
...@@ -312,17 +237,13 @@ void xen_set_pmd_hyper(pmd_t *ptr, pmd_t val) ...@@ -312,17 +237,13 @@ void xen_set_pmd_hyper(pmd_t *ptr, pmd_t val)
u.val = pmd_val_ma(val); u.val = pmd_val_ma(val);
xen_extend_mmu_update(&u); xen_extend_mmu_update(&u);
ADD_STATS(pmd_update_batched, paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU);
xen_mc_issue(PARAVIRT_LAZY_MMU); xen_mc_issue(PARAVIRT_LAZY_MMU);
preempt_enable(); preempt_enable();
} }
void xen_set_pmd(pmd_t *ptr, pmd_t val) static void xen_set_pmd(pmd_t *ptr, pmd_t val)
{ {
ADD_STATS(pmd_update, 1);
/* If page is not pinned, we can just update the entry /* If page is not pinned, we can just update the entry
directly */ directly */
if (!xen_page_pinned(ptr)) { if (!xen_page_pinned(ptr)) {
...@@ -330,8 +251,6 @@ void xen_set_pmd(pmd_t *ptr, pmd_t val) ...@@ -330,8 +251,6 @@ void xen_set_pmd(pmd_t *ptr, pmd_t val)
return; return;
} }
ADD_STATS(pmd_update_pinned, 1);
xen_set_pmd_hyper(ptr, val); xen_set_pmd_hyper(ptr, val);
} }
...@@ -344,35 +263,34 @@ void set_pte_mfn(unsigned long vaddr, unsigned long mfn, pgprot_t flags) ...@@ -344,35 +263,34 @@ void set_pte_mfn(unsigned long vaddr, unsigned long mfn, pgprot_t flags)
set_pte_vaddr(vaddr, mfn_pte(mfn, flags)); set_pte_vaddr(vaddr, mfn_pte(mfn, flags));
} }
void xen_set_pte_at(struct mm_struct *mm, unsigned long addr, static bool xen_batched_set_pte(pte_t *ptep, pte_t pteval)
pte_t *ptep, pte_t pteval)
{ {
if (xen_iomap_pte(pteval)) { struct mmu_update u;
xen_set_iomap_pte(ptep, pteval);
goto out;
}
ADD_STATS(set_pte_at, 1); if (paravirt_get_lazy_mode() != PARAVIRT_LAZY_MMU)
// ADD_STATS(set_pte_at_pinned, xen_page_pinned(ptep)); return false;
ADD_STATS(set_pte_at_current, mm == current->mm);
ADD_STATS(set_pte_at_kernel, mm == &init_mm);
if (mm == current->mm || mm == &init_mm) { xen_mc_batch();
if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) {
struct multicall_space mcs;
mcs = xen_mc_entry(0);
MULTI_update_va_mapping(mcs.mc, addr, pteval, 0); u.ptr = virt_to_machine(ptep).maddr | MMU_NORMAL_PT_UPDATE;
ADD_STATS(set_pte_at_batched, 1); u.val = pte_val_ma(pteval);
xen_mc_issue(PARAVIRT_LAZY_MMU); xen_extend_mmu_update(&u);
goto out;
} else xen_mc_issue(PARAVIRT_LAZY_MMU);
if (HYPERVISOR_update_va_mapping(addr, pteval, 0) == 0)
goto out;
}
xen_set_pte(ptep, pteval);
out: return; return true;
}
static void xen_set_pte(pte_t *ptep, pte_t pteval)
{
if (!xen_batched_set_pte(ptep, pteval))
native_set_pte(ptep, pteval);
}
static void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval)
{
xen_set_pte(ptep, pteval);
} }
pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, pte_t xen_ptep_modify_prot_start(struct mm_struct *mm,
...@@ -389,13 +307,10 @@ void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, ...@@ -389,13 +307,10 @@ void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
xen_mc_batch(); xen_mc_batch();
u.ptr = arbitrary_virt_to_machine(ptep).maddr | MMU_PT_UPDATE_PRESERVE_AD; u.ptr = virt_to_machine(ptep).maddr | MMU_PT_UPDATE_PRESERVE_AD;
u.val = pte_val_ma(pte); u.val = pte_val_ma(pte);
xen_extend_mmu_update(&u); xen_extend_mmu_update(&u);
ADD_STATS(prot_commit, 1);
ADD_STATS(prot_commit_batched, paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU);
xen_mc_issue(PARAVIRT_LAZY_MMU); xen_mc_issue(PARAVIRT_LAZY_MMU);
} }
...@@ -463,7 +378,7 @@ static pteval_t iomap_pte(pteval_t val) ...@@ -463,7 +378,7 @@ static pteval_t iomap_pte(pteval_t val)
return val; return val;
} }
pteval_t xen_pte_val(pte_t pte) static pteval_t xen_pte_val(pte_t pte)
{ {
pteval_t pteval = pte.pte; pteval_t pteval = pte.pte;
...@@ -480,7 +395,7 @@ pteval_t xen_pte_val(pte_t pte) ...@@ -480,7 +395,7 @@ pteval_t xen_pte_val(pte_t pte)
} }
PV_CALLEE_SAVE_REGS_THUNK(xen_pte_val); PV_CALLEE_SAVE_REGS_THUNK(xen_pte_val);
pgdval_t xen_pgd_val(pgd_t pgd) static pgdval_t xen_pgd_val(pgd_t pgd)
{ {
return pte_mfn_to_pfn(pgd.pgd); return pte_mfn_to_pfn(pgd.pgd);
} }
...@@ -511,7 +426,7 @@ void xen_set_pat(u64 pat) ...@@ -511,7 +426,7 @@ void xen_set_pat(u64 pat)
WARN_ON(pat != 0x0007010600070106ull); WARN_ON(pat != 0x0007010600070106ull);
} }
pte_t xen_make_pte(pteval_t pte) static pte_t xen_make_pte(pteval_t pte)
{ {
phys_addr_t addr = (pte & PTE_PFN_MASK); phys_addr_t addr = (pte & PTE_PFN_MASK);
...@@ -581,20 +496,20 @@ pte_t xen_make_pte_debug(pteval_t pte) ...@@ -581,20 +496,20 @@ pte_t xen_make_pte_debug(pteval_t pte)
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pte_debug); PV_CALLEE_SAVE_REGS_THUNK(xen_make_pte_debug);
#endif #endif
pgd_t xen_make_pgd(pgdval_t pgd) static pgd_t xen_make_pgd(pgdval_t pgd)
{ {
pgd = pte_pfn_to_mfn(pgd); pgd = pte_pfn_to_mfn(pgd);
return native_make_pgd(pgd); return native_make_pgd(pgd);
} }
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pgd); PV_CALLEE_SAVE_REGS_THUNK(xen_make_pgd);
pmdval_t xen_pmd_val(pmd_t pmd) static pmdval_t xen_pmd_val(pmd_t pmd)
{ {
return pte_mfn_to_pfn(pmd.pmd); return pte_mfn_to_pfn(pmd.pmd);
} }
PV_CALLEE_SAVE_REGS_THUNK(xen_pmd_val); PV_CALLEE_SAVE_REGS_THUNK(xen_pmd_val);
void xen_set_pud_hyper(pud_t *ptr, pud_t val) static void xen_set_pud_hyper(pud_t *ptr, pud_t val)
{ {
struct mmu_update u; struct mmu_update u;
...@@ -607,17 +522,13 @@ void xen_set_pud_hyper(pud_t *ptr, pud_t val) ...@@ -607,17 +522,13 @@ void xen_set_pud_hyper(pud_t *ptr, pud_t val)
u.val = pud_val_ma(val); u.val = pud_val_ma(val);
xen_extend_mmu_update(&u); xen_extend_mmu_update(&u);
ADD_STATS(pud_update_batched, paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU);
xen_mc_issue(PARAVIRT_LAZY_MMU); xen_mc_issue(PARAVIRT_LAZY_MMU);
preempt_enable(); preempt_enable();
} }
void xen_set_pud(pud_t *ptr, pud_t val) static void xen_set_pud(pud_t *ptr, pud_t val)
{ {
ADD_STATS(pud_update, 1);
/* If page is not pinned, we can just update the entry /* If page is not pinned, we can just update the entry
directly */ directly */
if (!xen_page_pinned(ptr)) { if (!xen_page_pinned(ptr)) {
...@@ -625,56 +536,28 @@ void xen_set_pud(pud_t *ptr, pud_t val) ...@@ -625,56 +536,28 @@ void xen_set_pud(pud_t *ptr, pud_t val)
return; return;
} }
ADD_STATS(pud_update_pinned, 1);
xen_set_pud_hyper(ptr, val); xen_set_pud_hyper(ptr, val);
} }
void xen_set_pte(pte_t *ptep, pte_t pte)
{
if (xen_iomap_pte(pte)) {
xen_set_iomap_pte(ptep, pte);
return;
}
ADD_STATS(pte_update, 1);
// ADD_STATS(pte_update_pinned, xen_page_pinned(ptep));
ADD_STATS(pte_update_batched, paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU);
#ifdef CONFIG_X86_PAE #ifdef CONFIG_X86_PAE
ptep->pte_high = pte.pte_high; static void xen_set_pte_atomic(pte_t *ptep, pte_t pte)
smp_wmb();
ptep->pte_low = pte.pte_low;
#else
*ptep = pte;
#endif
}
#ifdef CONFIG_X86_PAE
void xen_set_pte_atomic(pte_t *ptep, pte_t pte)
{ {
if (xen_iomap_pte(pte)) {
xen_set_iomap_pte(ptep, pte);
return;
}
set_64bit((u64 *)ptep, native_pte_val(pte)); set_64bit((u64 *)ptep, native_pte_val(pte));
} }
void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) static void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{ {
ptep->pte_low = 0; if (!xen_batched_set_pte(ptep, native_make_pte(0)))
smp_wmb(); /* make sure low gets written first */ native_pte_clear(mm, addr, ptep);
ptep->pte_high = 0;
} }
void xen_pmd_clear(pmd_t *pmdp) static void xen_pmd_clear(pmd_t *pmdp)
{ {
set_pmd(pmdp, __pmd(0)); set_pmd(pmdp, __pmd(0));
} }
#endif /* CONFIG_X86_PAE */ #endif /* CONFIG_X86_PAE */
pmd_t xen_make_pmd(pmdval_t pmd) static pmd_t xen_make_pmd(pmdval_t pmd)
{ {
pmd = pte_pfn_to_mfn(pmd); pmd = pte_pfn_to_mfn(pmd);
return native_make_pmd(pmd); return native_make_pmd(pmd);
...@@ -682,13 +565,13 @@ pmd_t xen_make_pmd(pmdval_t pmd) ...@@ -682,13 +565,13 @@ pmd_t xen_make_pmd(pmdval_t pmd)
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pmd); PV_CALLEE_SAVE_REGS_THUNK(xen_make_pmd);
#if PAGETABLE_LEVELS == 4 #if PAGETABLE_LEVELS == 4
pudval_t xen_pud_val(pud_t pud) static pudval_t xen_pud_val(pud_t pud)
{ {
return pte_mfn_to_pfn(pud.pud); return pte_mfn_to_pfn(pud.pud);
} }
PV_CALLEE_SAVE_REGS_THUNK(xen_pud_val); PV_CALLEE_SAVE_REGS_THUNK(xen_pud_val);
pud_t xen_make_pud(pudval_t pud) static pud_t xen_make_pud(pudval_t pud)
{ {
pud = pte_pfn_to_mfn(pud); pud = pte_pfn_to_mfn(pud);
...@@ -696,7 +579,7 @@ pud_t xen_make_pud(pudval_t pud) ...@@ -696,7 +579,7 @@ pud_t xen_make_pud(pudval_t pud)
} }
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pud); PV_CALLEE_SAVE_REGS_THUNK(xen_make_pud);
pgd_t *xen_get_user_pgd(pgd_t *pgd) static pgd_t *xen_get_user_pgd(pgd_t *pgd)
{ {
pgd_t *pgd_page = (pgd_t *)(((unsigned long)pgd) & PAGE_MASK); pgd_t *pgd_page = (pgd_t *)(((unsigned long)pgd) & PAGE_MASK);
unsigned offset = pgd - pgd_page; unsigned offset = pgd - pgd_page;
...@@ -728,7 +611,7 @@ static void __xen_set_pgd_hyper(pgd_t *ptr, pgd_t val) ...@@ -728,7 +611,7 @@ static void __xen_set_pgd_hyper(pgd_t *ptr, pgd_t val)
* 2. It is always pinned * 2. It is always pinned
* 3. It has no user pagetable attached to it * 3. It has no user pagetable attached to it
*/ */
void __init xen_set_pgd_hyper(pgd_t *ptr, pgd_t val) static void __init xen_set_pgd_hyper(pgd_t *ptr, pgd_t val)
{ {
preempt_disable(); preempt_disable();
...@@ -741,12 +624,10 @@ void __init xen_set_pgd_hyper(pgd_t *ptr, pgd_t val) ...@@ -741,12 +624,10 @@ void __init xen_set_pgd_hyper(pgd_t *ptr, pgd_t val)
preempt_enable(); preempt_enable();
} }
void xen_set_pgd(pgd_t *ptr, pgd_t val) static void xen_set_pgd(pgd_t *ptr, pgd_t val)
{ {
pgd_t *user_ptr = xen_get_user_pgd(ptr); pgd_t *user_ptr = xen_get_user_pgd(ptr);
ADD_STATS(pgd_update, 1);
/* If page is not pinned, we can just update the entry /* If page is not pinned, we can just update the entry
directly */ directly */
if (!xen_page_pinned(ptr)) { if (!xen_page_pinned(ptr)) {
...@@ -758,9 +639,6 @@ void xen_set_pgd(pgd_t *ptr, pgd_t val) ...@@ -758,9 +639,6 @@ void xen_set_pgd(pgd_t *ptr, pgd_t val)
return; return;
} }
ADD_STATS(pgd_update_pinned, 1);
ADD_STATS(pgd_update_batched, paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU);
/* If it's pinned, then we can at least batch the kernel and /* If it's pinned, then we can at least batch the kernel and
user updates together. */ user updates together. */
xen_mc_batch(); xen_mc_batch();
...@@ -1162,14 +1040,14 @@ void xen_mm_unpin_all(void) ...@@ -1162,14 +1040,14 @@ void xen_mm_unpin_all(void)
spin_unlock(&pgd_lock); spin_unlock(&pgd_lock);
} }
void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next) static void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next)
{ {
spin_lock(&next->page_table_lock); spin_lock(&next->page_table_lock);
xen_pgd_pin(next); xen_pgd_pin(next);
spin_unlock(&next->page_table_lock); spin_unlock(&next->page_table_lock);
} }
void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm) static void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
{ {
spin_lock(&mm->page_table_lock); spin_lock(&mm->page_table_lock);
xen_pgd_pin(mm); xen_pgd_pin(mm);
...@@ -1256,7 +1134,7 @@ static void xen_drop_mm_ref(struct mm_struct *mm) ...@@ -1256,7 +1134,7 @@ static void xen_drop_mm_ref(struct mm_struct *mm)
* pagetable because of lazy tlb flushing. This means we need need to * pagetable because of lazy tlb flushing. This means we need need to
* switch all CPUs off this pagetable before we can unpin it. * switch all CPUs off this pagetable before we can unpin it.
*/ */
void xen_exit_mmap(struct mm_struct *mm) static void xen_exit_mmap(struct mm_struct *mm)
{ {
get_cpu(); /* make sure we don't move around */ get_cpu(); /* make sure we don't move around */
xen_drop_mm_ref(mm); xen_drop_mm_ref(mm);
...@@ -2371,7 +2249,7 @@ static int remap_area_mfn_pte_fn(pte_t *ptep, pgtable_t token, ...@@ -2371,7 +2249,7 @@ static int remap_area_mfn_pte_fn(pte_t *ptep, pgtable_t token,
struct remap_data *rmd = data; struct remap_data *rmd = data;
pte_t pte = pte_mkspecial(pfn_pte(rmd->mfn++, rmd->prot)); pte_t pte = pte_mkspecial(pfn_pte(rmd->mfn++, rmd->prot));
rmd->mmu_update->ptr = arbitrary_virt_to_machine(ptep).maddr; rmd->mmu_update->ptr = virt_to_machine(ptep).maddr;
rmd->mmu_update->val = pte_val_ma(pte); rmd->mmu_update->val = pte_val_ma(pte);
rmd->mmu_update++; rmd->mmu_update++;
...@@ -2425,7 +2303,6 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma, ...@@ -2425,7 +2303,6 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range); EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range);
#ifdef CONFIG_XEN_DEBUG_FS #ifdef CONFIG_XEN_DEBUG_FS
static int p2m_dump_open(struct inode *inode, struct file *filp) static int p2m_dump_open(struct inode *inode, struct file *filp)
{ {
return single_open(filp, p2m_dump_show, NULL); return single_open(filp, p2m_dump_show, NULL);
...@@ -2437,65 +2314,4 @@ static const struct file_operations p2m_dump_fops = { ...@@ -2437,65 +2314,4 @@ static const struct file_operations p2m_dump_fops = {
.llseek = seq_lseek, .llseek = seq_lseek,
.release = single_release, .release = single_release,
}; };
#endif /* CONFIG_XEN_DEBUG_FS */
static struct dentry *d_mmu_debug;
static int __init xen_mmu_debugfs(void)
{
struct dentry *d_xen = xen_init_debugfs();
if (d_xen == NULL)
return -ENOMEM;
d_mmu_debug = debugfs_create_dir("mmu", d_xen);
debugfs_create_u8("zero_stats", 0644, d_mmu_debug, &zero_stats);
debugfs_create_u32("pgd_update", 0444, d_mmu_debug, &mmu_stats.pgd_update);
debugfs_create_u32("pgd_update_pinned", 0444, d_mmu_debug,
&mmu_stats.pgd_update_pinned);
debugfs_create_u32("pgd_update_batched", 0444, d_mmu_debug,
&mmu_stats.pgd_update_pinned);
debugfs_create_u32("pud_update", 0444, d_mmu_debug, &mmu_stats.pud_update);
debugfs_create_u32("pud_update_pinned", 0444, d_mmu_debug,
&mmu_stats.pud_update_pinned);
debugfs_create_u32("pud_update_batched", 0444, d_mmu_debug,
&mmu_stats.pud_update_pinned);
debugfs_create_u32("pmd_update", 0444, d_mmu_debug, &mmu_stats.pmd_update);
debugfs_create_u32("pmd_update_pinned", 0444, d_mmu_debug,
&mmu_stats.pmd_update_pinned);
debugfs_create_u32("pmd_update_batched", 0444, d_mmu_debug,
&mmu_stats.pmd_update_pinned);
debugfs_create_u32("pte_update", 0444, d_mmu_debug, &mmu_stats.pte_update);
// debugfs_create_u32("pte_update_pinned", 0444, d_mmu_debug,
// &mmu_stats.pte_update_pinned);
debugfs_create_u32("pte_update_batched", 0444, d_mmu_debug,
&mmu_stats.pte_update_pinned);
debugfs_create_u32("mmu_update", 0444, d_mmu_debug, &mmu_stats.mmu_update);
debugfs_create_u32("mmu_update_extended", 0444, d_mmu_debug,
&mmu_stats.mmu_update_extended);
xen_debugfs_create_u32_array("mmu_update_histo", 0444, d_mmu_debug,
mmu_stats.mmu_update_histo, 20);
debugfs_create_u32("set_pte_at", 0444, d_mmu_debug, &mmu_stats.set_pte_at);
debugfs_create_u32("set_pte_at_batched", 0444, d_mmu_debug,
&mmu_stats.set_pte_at_batched);
debugfs_create_u32("set_pte_at_current", 0444, d_mmu_debug,
&mmu_stats.set_pte_at_current);
debugfs_create_u32("set_pte_at_kernel", 0444, d_mmu_debug,
&mmu_stats.set_pte_at_kernel);
debugfs_create_u32("prot_commit", 0444, d_mmu_debug, &mmu_stats.prot_commit);
debugfs_create_u32("prot_commit_batched", 0444, d_mmu_debug,
&mmu_stats.prot_commit_batched);
debugfs_create_file("p2m", 0600, d_mmu_debug, NULL, &p2m_dump_fops);
return 0;
}
fs_initcall(xen_mmu_debugfs);
#endif /* CONFIG_XEN_DEBUG_FS */
arch/x86/xen/mmu.h
View file @ dc7acbb2
...@@ -15,43 +15,6 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn); ...@@ -15,43 +15,6 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
void xen_exit_mmap(struct mm_struct *mm);
pteval_t xen_pte_val(pte_t);
pmdval_t xen_pmd_val(pmd_t);
pgdval_t xen_pgd_val(pgd_t);
pte_t xen_make_pte(pteval_t);
pmd_t xen_make_pmd(pmdval_t);
pgd_t xen_make_pgd(pgdval_t);
void xen_set_pte(pte_t *ptep, pte_t pteval);
void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval);
#ifdef CONFIG_X86_PAE
void xen_set_pte_atomic(pte_t *ptep, pte_t pte);
void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
void xen_pmd_clear(pmd_t *pmdp);
#endif /* CONFIG_X86_PAE */
void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval);
void xen_set_pud(pud_t *ptr, pud_t val);
void xen_set_pmd_hyper(pmd_t *pmdp, pmd_t pmdval);
void xen_set_pud_hyper(pud_t *ptr, pud_t val);
#if PAGETABLE_LEVELS == 4
pudval_t xen_pud_val(pud_t pud);
pud_t xen_make_pud(pudval_t pudval);
void xen_set_pgd(pgd_t *pgdp, pgd_t pgd);
void xen_set_pgd_hyper(pgd_t *pgdp, pgd_t pgd);
#endif
pgd_t *xen_get_user_pgd(pgd_t *pgd);
pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, pte_t *ptep); pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte); pte_t *ptep, pte_t pte);
......
mm/vmalloc.c
View file @ dc7acbb2
...@@ -2153,10 +2153,6 @@ struct vm_struct *alloc_vm_area(size_t size) ...@@ -2153,10 +2153,6 @@ struct vm_struct *alloc_vm_area(size_t size)
return NULL; return NULL;
} }
/* Make sure the pagetables are constructed in process kernel
mappings */
vmalloc_sync_all();
return area; return area;
} }
EXPORT_SYMBOL_GPL(alloc_vm_area); EXPORT_SYMBOL_GPL(alloc_vm_area);
......
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