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author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-06-17 18:42:01 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-06-20 13:09:56 (GMT) |
commit | aeaaa59c7e15dcfaaf57ce069ef81683067d575d (patch) | |
tree | 5d3197156381360027d414625fe26ab2d67c6a07 | |
parent | d494a96125c99f1e37b1f831b29b42c9b712ee05 (diff) | |
download | linux-fsl-qoriq-aeaaa59c7e15dcfaaf57ce069ef81683067d575d.tar.xz |
x86/paravirt/xen: add set_fixmap pv_mmu_ops
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r-- | arch/x86/kernel/paravirt.c | 2 | ||||
-rw-r--r-- | arch/x86/mm/pgtable.c | 9 | ||||
-rw-r--r-- | arch/x86/xen/enlighten.c | 29 | ||||
-rw-r--r-- | include/asm-x86/fixmap.h | 14 | ||||
-rw-r--r-- | include/asm-x86/paravirt.h | 13 |
5 files changed, 63 insertions, 4 deletions
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 74f0c5e..cf06670 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -416,6 +416,8 @@ struct pv_mmu_ops pv_mmu_ops = { .enter = paravirt_nop, .leave = paravirt_nop, }, + + .set_fixmap = native_set_fixmap, }; EXPORT_SYMBOL_GPL(pv_time_ops); diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 7498124..e9fb663 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -277,7 +277,7 @@ int ptep_clear_flush_young(struct vm_area_struct *vma, int fixmaps_set; -void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t flags) +void __native_set_fixmap(enum fixed_addresses idx, pte_t pte) { unsigned long address = __fix_to_virt(idx); @@ -285,6 +285,11 @@ void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t flags) BUG(); return; } - set_pte_vaddr(address, pfn_pte(phys >> PAGE_SHIFT, flags)); + set_pte_vaddr(address, pte); fixmaps_set++; } + +void native_set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t flags) +{ + __native_set_fixmap(idx, pfn_pte(phys >> PAGE_SHIFT, flags)); +} diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index c8a56e4..0ad8a64 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -960,6 +960,33 @@ static unsigned xen_patch(u8 type, u16 clobbers, void *insnbuf, return ret; } +static void xen_set_fixmap(unsigned idx, unsigned long phys, pgprot_t prot) +{ + pte_t pte; + + phys >>= PAGE_SHIFT; + + switch (idx) { + case FIX_BTMAP_END ... FIX_BTMAP_BEGIN: +#ifdef CONFIG_X86_F00F_BUG + case FIX_F00F_IDT: +#endif + case FIX_WP_TEST: + case FIX_VDSO: +#ifdef CONFIG_X86_LOCAL_APIC + case FIX_APIC_BASE: /* maps dummy local APIC */ +#endif + pte = pfn_pte(phys, prot); + break; + + default: + pte = mfn_pte(phys, prot); + break; + } + + __native_set_fixmap(idx, pte); +} + static const struct pv_info xen_info __initdata = { .paravirt_enabled = 1, .shared_kernel_pmd = 0, @@ -1112,6 +1139,8 @@ static const struct pv_mmu_ops xen_mmu_ops __initdata = { .enter = paravirt_enter_lazy_mmu, .leave = xen_leave_lazy, }, + + .set_fixmap = xen_set_fixmap, }; #ifdef CONFIG_SMP diff --git a/include/asm-x86/fixmap.h b/include/asm-x86/fixmap.h index 934d6b4..44d4f82 100644 --- a/include/asm-x86/fixmap.h +++ b/include/asm-x86/fixmap.h @@ -9,8 +9,18 @@ extern int fixmaps_set; -extern void __set_fixmap(enum fixed_addresses idx, - unsigned long phys, pgprot_t flags); +void __native_set_fixmap(enum fixed_addresses idx, pte_t pte); +void native_set_fixmap(enum fixed_addresses idx, + unsigned long phys, pgprot_t flags); + +#ifndef CONFIG_PARAVIRT +static inline void __set_fixmap(enum fixed_addresses idx, + unsigned long phys, pgprot_t flags) +{ + native_set_fixmap(idx, phys, flags); +} +#endif + #define set_fixmap(idx, phys) \ __set_fixmap(idx, phys, PAGE_KERNEL) diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index 0f13b94..af85caf 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -273,6 +273,13 @@ struct pv_mmu_ops { #endif struct pv_lazy_ops lazy_mode; + + /* dom0 ops */ + + /* Sometimes the physical address is a pfn, and sometimes its + an mfn. We can tell which is which from the index. */ + void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx, + unsigned long phys, pgprot_t flags); }; /* This contains all the paravirt structures: we get a convenient @@ -1252,6 +1259,12 @@ static inline void arch_flush_lazy_mmu_mode(void) } } +static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, + unsigned long phys, pgprot_t flags) +{ + pv_mmu_ops.set_fixmap(idx, phys, flags); +} + void _paravirt_nop(void); #define paravirt_nop ((void *)_paravirt_nop) |