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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-07-23 23:21:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-24 12:30:06 +0200 |
| commit | 38ffbe66d59051fd9cfcfc8545f164700e2fa3bc (patch) | |
| tree | 37e76db49cc86b3da550a62f36d101c7269d262e /include/asm-x86 | |
| parent | Merge branch 'x86/auditsc' of git://git.kernel.org/pub/scm/linux/kernel/git/f... (diff) | |
| download | linux-38ffbe66d59051fd9cfcfc8545f164700e2fa3bc.tar.xz linux-38ffbe66d59051fd9cfcfc8545f164700e2fa3bc.zip | |
x86/paravirt/xen: properly fill out the ldt ops
LTP testing showed that Xen does not properly implement
sys_modify_ldt(). This patch does the final little bits needed to
make the ldt work properly.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/desc.h | 10 | ||||
| -rw-r--r-- | include/asm-x86/paravirt.h | 13 |
2 files changed, 22 insertions, 1 deletions
diff --git a/include/asm-x86/desc.h b/include/asm-x86/desc.h index a44c4dc70590..24a524f5e1a2 100644 --- a/include/asm-x86/desc.h +++ b/include/asm-x86/desc.h @@ -97,7 +97,15 @@ static inline int desc_empty(const void *ptr) native_write_gdt_entry(dt, entry, desc, type) #define write_idt_entry(dt, entry, g) \ native_write_idt_entry(dt, entry, g) -#endif + +static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries) +{ +} + +static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries) +{ +} +#endif /* CONFIG_PARAVIRT */ static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate) diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index fbbde93f12d6..db9b0647b346 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -124,6 +124,9 @@ struct pv_cpu_ops { int entrynum, const void *desc, int size); void (*write_idt_entry)(gate_desc *, int entrynum, const gate_desc *gate); + void (*alloc_ldt)(struct desc_struct *ldt, unsigned entries); + void (*free_ldt)(struct desc_struct *ldt, unsigned entries); + void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t); void (*set_iopl_mask)(unsigned mask); @@ -824,6 +827,16 @@ do { \ (aux) = __aux; \ } while (0) +static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries) +{ + PVOP_VCALL2(pv_cpu_ops.alloc_ldt, ldt, entries); +} + +static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries) +{ + PVOP_VCALL2(pv_cpu_ops.free_ldt, ldt, entries); +} + static inline void load_TR_desc(void) { PVOP_VCALL0(pv_cpu_ops.load_tr_desc); |