Messages in this thread Patch in this message | | | From | Ankur Arora <> | Subject | [PATCH v2 06/14] sparse: add address_space __incoherent | Date | Wed, 20 Oct 2021 10:02:57 -0700 |
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Some CPU architectures provide store instructions that are weakly ordered with respect to other instructions that operate on the memory hierarchy. Add sparse address_space __incoherent to denote pointers used to operate over these regions.
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com> --- include/linux/compiler_types.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index b6ff83a714ca..f7f68d7bc494 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -11,6 +11,7 @@ # define __iomem __attribute__((noderef, address_space(__iomem))) # define __percpu __attribute__((noderef, address_space(__percpu))) # define __rcu __attribute__((noderef, address_space(__rcu))) +# define __incoherent __attribute__((noderef, address_space(__incoherent))) static inline void __chk_user_ptr(const volatile void __user *ptr) { } static inline void __chk_io_ptr(const volatile void __iomem *ptr) { } /* context/locking */ @@ -37,6 +38,7 @@ static inline void __chk_io_ptr(const volatile void __iomem *ptr) { } # define __iomem # define __percpu # define __rcu +# define __incoherent # define __chk_user_ptr(x) (void)0 # define __chk_io_ptr(x) (void)0 /* context/locking */ -- 2.29.2
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