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| author | Keir Fraser <keir.fraser@citrix.com> | 2008-01-22 11:35:26 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-01-22 11:35:26 +0000 |
| commit | dfba81d2fcc227ffc2ce546d9884580f682e68b5 (patch) | |
| tree | b3b9cb1c870750bbbde0d0aa1d44c7c502192e11 /extras/mini-os/arch/x86/mm.c | |
| parent | c6c6a0890d23024c78426352d3da55aec2e472d5 (diff) | |
| download | xen-dfba81d2fcc227ffc2ce546d9884580f682e68b5.tar.gz xen-dfba81d2fcc227ffc2ce546d9884580f682e68b5.tar.bz2 xen-dfba81d2fcc227ffc2ce546d9884580f682e68b5.zip | |
minios: fix case when _text is not 0
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Diffstat (limited to 'extras/mini-os/arch/x86/mm.c')
| -rw-r--r-- | extras/mini-os/arch/x86/mm.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/extras/mini-os/arch/x86/mm.c b/extras/mini-os/arch/x86/mm.c index b8f55b7c58..5e6f180efd 100644 --- a/extras/mini-os/arch/x86/mm.c +++ b/extras/mini-os/arch/x86/mm.c @@ -497,11 +497,11 @@ static void clear_bootstrap(void) int n = sizeof(mfns)/sizeof(*mfns); pte_t nullpte = { }; - /* Use page 0 as the CoW zero page */ - memset(NULL, 0, PAGE_SIZE); - mfn_zero = pfn_to_mfn(0); - if (HYPERVISOR_update_va_mapping(0, nullpte, UVMF_INVLPG)) - printk("Unable to unmap page 0\n"); + /* Use first page as the CoW zero page */ + memset(&_text, 0, PAGE_SIZE); + mfn_zero = pfn_to_mfn((unsigned long) &_text); + if (HYPERVISOR_update_va_mapping((unsigned long) &_text, nullpte, UVMF_INVLPG)) + printk("Unable to unmap first page\n"); set_xen_guest_handle(reservation.extent_start, mfns); reservation.nr_extents = n; |