unsigned long mfn;
if (!xen_feature(XENFEAT_auto_translated_physmap))
- mfn = get_phys_to_machine(pfn);
+ mfn = __pfn_to_mfn(pfn);
else
mfn = pfn;
/*
__visible pteval_t xen_pte_val(pte_t pte)
{
pteval_t pteval = pte.pte;
-#if 0
- /* If this is a WC pte, convert back from Xen WC to Linux WC */
- if ((pteval & (_PAGE_PAT | _PAGE_PCD | _PAGE_PWT)) == _PAGE_PAT) {
- WARN_ON(!pat_enabled);
- pteval = (pteval & ~_PAGE_PAT) | _PAGE_PWT;
- }
-#endif
+
return pte_mfn_to_pfn(pteval);
}
PV_CALLEE_SAVE_REGS_THUNK(xen_pte_val);
}
PV_CALLEE_SAVE_REGS_THUNK(xen_pgd_val);
-/*
- * Xen's PAT setup is part of its ABI, though I assume entries 6 & 7
- * are reserved for now, to correspond to the Intel-reserved PAT
- * types.
- *
- * We expect Linux's PAT set as follows:
- *
- * Idx PTE flags Linux Xen Default
- * 0 WB WB WB
- * 1 PWT WC WT WT
- * 2 PCD UC- UC- UC-
- * 3 PCD PWT UC UC UC
- * 4 PAT WB WC WB
- * 5 PAT PWT WC WP WT
- * 6 PAT PCD UC- rsv UC-
- * 7 PAT PCD PWT UC rsv UC
- */
-
-void xen_set_pat(u64 pat)
-{
- /* We expect Linux to use a PAT setting of
- * UC UC- WC WB (ignoring the PAT flag) */
- WARN_ON(pat != 0x0007010600070106ull);
-}
-
__visible pte_t xen_make_pte(pteval_t pte)
{
-#if 0
- /* If Linux is trying to set a WC pte, then map to the Xen WC.
- * If _PAGE_PAT is set, then it probably means it is really
- * _PAGE_PSE, so avoid fiddling with the PAT mapping and hope
- * things work out OK...
- *
- * (We should never see kernel mappings with _PAGE_PSE set,
- * but we could see hugetlbfs mappings, I think.).
- */
- if (pat_enabled && !WARN_ON(pte & _PAGE_PAT)) {
- if ((pte & (_PAGE_PCD | _PAGE_PWT)) == _PAGE_PWT)
- pte = (pte & ~(_PAGE_PCD | _PAGE_PWT)) | _PAGE_PAT;
- }
-#endif
pte = pte_pfn_to_mfn(pte);
return native_make_pte(pte);
* instead of somewhere later and be confusing. */
xen_mc_flush();
}
-static void __init xen_pagetable_p2m_copy(void)
+
+static void __init xen_pagetable_p2m_free(void)
{
unsigned long size;
unsigned long addr;
- unsigned long new_mfn_list;
-
- if (xen_feature(XENFEAT_auto_translated_physmap))
- return;
size = PAGE_ALIGN(xen_start_info->nr_pages * sizeof(unsigned long));
- new_mfn_list = xen_revector_p2m_tree();
/* No memory or already called. */
- if (!new_mfn_list || new_mfn_list == xen_start_info->mfn_list)
+ if ((unsigned long)xen_p2m_addr == xen_start_info->mfn_list)
return;
/* using __ka address and sticking INVALID_P2M_ENTRY! */
size = PAGE_ALIGN(xen_start_info->nr_pages * sizeof(unsigned long));
memblock_free(__pa(xen_start_info->mfn_list), size);
- /* And revector! Bye bye old array */
- xen_start_info->mfn_list = new_mfn_list;
/* At this stage, cleanup_highmap has already cleaned __ka space
* from _brk_limit way up to the max_pfn_mapped (which is the end of
}
#endif
-static void __init xen_pagetable_init(void)
+static void __init xen_pagetable_p2m_setup(void)
{
- paging_init();
+ if (xen_feature(XENFEAT_auto_translated_physmap))
+ return;
+
+ xen_vmalloc_p2m_tree();
+
#ifdef CONFIG_X86_64
- xen_pagetable_p2m_copy();
+ xen_pagetable_p2m_free();
#endif
+ /* And revector! Bye bye old array */
+ xen_start_info->mfn_list = (unsigned long)xen_p2m_addr;
+}
+
+static void __init xen_pagetable_init(void)
+{
+ paging_init();
+ xen_post_allocator_init();
+
+ xen_pagetable_p2m_setup();
+
/* Allocate and initialize top and mid mfn levels for p2m structure */
xen_build_mfn_list_list();
+ /* Remap memory freed due to conflicts with E820 map */
+ if (!xen_feature(XENFEAT_auto_translated_physmap))
+ xen_remap_memory();
+
xen_setup_shared_info();
- xen_post_allocator_init();
}
static void xen_write_cr2(unsigned long cr2)
{
page->private = (unsigned long)user_pgd;
if (user_pgd != NULL) {
+#ifdef CONFIG_X86_VSYSCALL_EMULATION
user_pgd[pgd_index(VSYSCALL_ADDR)] =
__pgd(__pa(level3_user_vsyscall) | _PAGE_TABLE);
+#endif
ret = 0;
}
native_set_pte(ptep, pte);
}
-static void pin_pagetable_pfn(unsigned cmd, unsigned long pfn)
+static void __init pin_pagetable_pfn(unsigned cmd, unsigned long pfn)
{
struct mmuext_op op;
op.cmd = cmd;
* Like __va(), but returns address in the kernel mapping (which is
* all we have until the physical memory mapping has been set up.
*/
-static void *__ka(phys_addr_t paddr)
+static void * __init __ka(phys_addr_t paddr)
{
#ifdef CONFIG_X86_64
return (void *)(paddr + __START_KERNEL_map);
}
/* Convert a machine address to physical address */
-static unsigned long m2p(phys_addr_t maddr)
+static unsigned long __init m2p(phys_addr_t maddr)
{
phys_addr_t paddr;
}
/* Convert a machine address to kernel virtual */
-static void *m2v(phys_addr_t maddr)
+static void * __init m2v(phys_addr_t maddr)
{
return __ka(m2p(maddr));
}
/* Set the page permissions on an identity-mapped pages */
-static void set_page_prot_flags(void *addr, pgprot_t prot, unsigned long flags)
+static void __init set_page_prot_flags(void *addr, pgprot_t prot,
+ unsigned long flags)
{
unsigned long pfn = __pa(addr) >> PAGE_SHIFT;
pte_t pte = pfn_pte(pfn, prot);
if (HYPERVISOR_update_va_mapping((unsigned long)addr, pte, flags))
BUG();
}
-static void set_page_prot(void *addr, pgprot_t prot)
+static void __init set_page_prot(void *addr, pgprot_t prot)
{
return set_page_prot_flags(addr, prot, UVMF_NONE);
}
for (pteidx = 0; pteidx < PTRS_PER_PTE; pteidx++, pfn++) {
pte_t pte;
-#ifdef CONFIG_X86_32
if (pfn > max_pfn_mapped)
max_pfn_mapped = pfn;
-#endif
if (!pte_none(pte_page[pteidx]))
continue;
}
#ifdef CONFIG_X86_64
-static void convert_pfn_mfn(void *v)
+static void __init convert_pfn_mfn(void *v)
{
pte_t *pte = v;
int i;
# ifdef CONFIG_HIGHMEM
case FIX_KMAP_BEGIN ... FIX_KMAP_END:
# endif
-#else
+#elif defined(CONFIG_X86_VSYSCALL_EMULATION)
case VSYSCALL_PAGE:
#endif
case FIX_TEXT_POKE0:
__native_set_fixmap(idx, pte);
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_VSYSCALL_EMULATION
/* Replicate changes to map the vsyscall page into the user
pagetable vsyscall mapping. */
if (idx == VSYSCALL_PAGE) {
projects / cascardo / linux.git / blobdiff