| Message ID | 1281900442-29971-2-git-send-email-eduard.munteanu@linux360.ro |
|---|---|
| State | New |
| Headers | show |
This function seems same to ranges_overlap(). Please use ranges_overlap(). On Sun, Aug 15, 2010 at 10:27:16PM +0300, Eduard - Gabriel Munteanu wrote: > This helper function allows map invalidation code to determine which > maps must be invalidated. > > Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> > --- > hw/pci.h | 10 ++++++++++ > 1 files changed, 10 insertions(+), 0 deletions(-) > > diff --git a/hw/pci.h b/hw/pci.h > index 4bd8a1a..5a6cdb5 100644 > --- a/hw/pci.h > +++ b/hw/pci.h > @@ -419,6 +419,16 @@ static inline int range_covers_byte(uint64_t offset, uint64_t len, > return offset <= byte && byte <= range_get_last(offset, len); > } > > +/* Check whether a given range completely covers another. */ > +static inline int range_covers_range(uint64_t first_big, uint64_t len_big, > + uint64_t first_small, uint64_t len_small) > +{ > + uint64_t last_big = range_get_last(first_big, len_big); > + uint64_t last_small = range_get_last(first_small, len_small); > + > + return first_big <= first_small && last_small <= last_big; > +} > + > /* Check whether 2 given ranges overlap. > * Undefined if ranges that wrap around 0. */ > static inline int ranges_overlap(uint64_t first1, uint64_t len1, > -- > 1.7.1 > >
diff --git a/hw/pci.h b/hw/pci.h index 4bd8a1a..5a6cdb5 100644 --- a/hw/pci.h +++ b/hw/pci.h @@ -419,6 +419,16 @@ static inline int range_covers_byte(uint64_t offset, uint64_t len, return offset <= byte && byte <= range_get_last(offset, len); } +/* Check whether a given range completely covers another. */ +static inline int range_covers_range(uint64_t first_big, uint64_t len_big, + uint64_t first_small, uint64_t len_small) +{ + uint64_t last_big = range_get_last(first_big, len_big); + uint64_t last_small = range_get_last(first_small, len_small); + + return first_big <= first_small && last_small <= last_big; +} + /* Check whether 2 given ranges overlap. * Undefined if ranges that wrap around 0. */ static inline int ranges_overlap(uint64_t first1, uint64_t len1,
This helper function allows map invalidation code to determine which maps must be invalidated. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> --- hw/pci.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-)