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SubjectRe: [PATCH 16 of 55] xen64: add extra pv_mmu_ops
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Hey Jeremy,

On Tue, 2008-07-08 at 15:06 -0700, Jeremy Fitzhardinge wrote:
> We need extra pv_mmu_ops for 64-bit, to deal with the extra level of
> pagetable.
>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
> ---
> arch/x86/xen/enlighten.c | 33 +++++++++++++++++++++++++++-
> arch/x86/xen/mmu.c | 51 +++++++++++++++++++++++++++++++++++++++++++-
> arch/x86/xen/mmu.h | 15 +++++++++++-
> include/asm-x86/xen/page.h | 4 +++
> 4 files changed, 99 insertions(+), 4 deletions(-)
...
> diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
> --- a/arch/x86/xen/mmu.c
> +++ b/arch/x86/xen/mmu.c
> @@ -438,14 +438,19 @@
>
> void xen_set_pte(pte_t *ptep, pte_t pte)
> {
> +#ifdef CONFIG_X86_PAE
> ptep->pte_high = pte.pte_high;
> smp_wmb();
> ptep->pte_low = pte.pte_low;
> +#else
> + *ptep = pte;
> +#endif
> }

You've dropped non-PAE support already, right? Any reason to use the
X86_PAE macro instead of X86_32?

Cheers,
Mark.



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