[PATCH v2 03/24] KVM: arm64: Add flags to struct hyp_page
Vincent Donnefort
vdonnefort at google.com
Mon Jul 18 03:57:13 PDT 2022
On Mon, Jul 18, 2022 at 11:54:24AM +0100, Vincent Donnefort wrote:
> On Thu, Jun 30, 2022 at 02:57:26PM +0100, Will Deacon wrote:
> > From: Quentin Perret <qperret at google.com>
> >
> > Add a 'flags' field to struct hyp_page, and reduce the size of the order
> > field to u8 to avoid growing the struct size.
> >
> > Signed-off-by: Quentin Perret <qperret at google.com>
> > Signed-off-by: Will Deacon <will at kernel.org>
> > ---
> > arch/arm64/kvm/hyp/include/nvhe/gfp.h | 6 +++---
> > arch/arm64/kvm/hyp/include/nvhe/memory.h | 3 ++-
> > arch/arm64/kvm/hyp/nvhe/page_alloc.c | 14 +++++++-------
> > 3 files changed, 12 insertions(+), 11 deletions(-)
> >
> > diff --git a/arch/arm64/kvm/hyp/include/nvhe/gfp.h b/arch/arm64/kvm/hyp/include/nvhe/gfp.h
> > index 0a048dc06a7d..9330b13075f8 100644
> > --- a/arch/arm64/kvm/hyp/include/nvhe/gfp.h
> > +++ b/arch/arm64/kvm/hyp/include/nvhe/gfp.h
> > @@ -7,7 +7,7 @@
> > #include <nvhe/memory.h>
> > #include <nvhe/spinlock.h>
> >
> > -#define HYP_NO_ORDER USHRT_MAX
> > +#define HYP_NO_ORDER 0xff
>
> BUG_ON in hyp_page_ref_inc() might now need to test for 0xff/HYP_NO_ORDER
> instead of USHRT_MAX.
My bad, read to quickly, refcount/order...
>
> [...]
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