diff options
Diffstat (limited to 'arch/i386/xen')
-rw-r--r-- | arch/i386/xen/enlighten.c | 4 | ||||
-rw-r--r-- | arch/i386/xen/mmu.c | 5 |
2 files changed, 6 insertions, 3 deletions
diff --git a/arch/i386/xen/enlighten.c b/arch/i386/xen/enlighten.c index f0c3751..f01bfcd 100644 --- a/arch/i386/xen/enlighten.c +++ b/arch/i386/xen/enlighten.c @@ -623,8 +623,8 @@ static unsigned long xen_read_cr2_direct(void) static void xen_write_cr4(unsigned long cr4) { - /* never allow TSC to be disabled */ - native_write_cr4(cr4 & ~X86_CR4_TSD); + /* Just ignore cr4 changes; Xen doesn't allow us to do + anything anyway. */ } static unsigned long xen_read_cr3(void) diff --git a/arch/i386/xen/mmu.c b/arch/i386/xen/mmu.c index 4ae038a..874db0c 100644 --- a/arch/i386/xen/mmu.c +++ b/arch/i386/xen/mmu.c @@ -559,6 +559,9 @@ void xen_exit_mmap(struct mm_struct *mm) put_cpu(); spin_lock(&mm->page_table_lock); - xen_pgd_unpin(mm->pgd); + + /* pgd may not be pinned in the error exit path of execve */ + if (PagePinned(virt_to_page(mm->pgd))) + xen_pgd_unpin(mm->pgd); spin_unlock(&mm->page_table_lock); } |