diff options
Diffstat (limited to 'xen/arch/x86/domain.c')
| -rw-r--r-- | xen/arch/x86/domain.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c index 89dd3cb4ba..68c435e401 100644 --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -779,12 +779,7 @@ int arch_set_info_guest( fixup_guest_code_selector(d, c.nat->trap_ctxt[i].cs); } - /* LDT safety checks. */ - if ( ((c.nat->ldt_base & (PAGE_SIZE-1)) != 0) || - (c.nat->ldt_ents > 8192) || - !array_access_ok(c.nat->ldt_base, - c.nat->ldt_ents, - LDT_ENTRY_SIZE) ) + if ( !__addr_ok(c.nat->ldt_base) ) return -EINVAL; } #ifdef CONFIG_COMPAT @@ -798,16 +793,13 @@ int arch_set_info_guest( for ( i = 0; i < 256; i++ ) fixup_guest_code_selector(d, c.cmp->trap_ctxt[i].cs); - - /* LDT safety checks. */ - if ( ((c.cmp->ldt_base & (PAGE_SIZE-1)) != 0) || - (c.cmp->ldt_ents > 8192) || - !compat_array_access_ok(c.cmp->ldt_base, - c.cmp->ldt_ents, - LDT_ENTRY_SIZE) ) - return -EINVAL; } #endif + + /* LDT safety checks. */ + if ( ((c(ldt_base) & (PAGE_SIZE - 1)) != 0) || + (c(ldt_ents) > 8192) ) + return -EINVAL; } v->fpu_initialised = !!(flags & VGCF_I387_VALID); |