diff options
| author | Sergey Bugaev <bugaevc@gmail.com> | 2024-04-15 12:01:44 +0300 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-04-16 09:41:51 +0900 |
| commit | fd2482bb3500602b8f747ab96df195b1d5c511d5 (patch) | |
| tree | 75e96700ad6bec4c3c2fdf96ea4a5052eea0a1dc /include | |
| parent | a0ff799984cf2ed1a50c1161aabff3aaee622c64 (diff) | |
aarch64: Add vm_param.h
And make it so that the generic vm_param.h doesn't require the machine-
specific one to define PAGE_SIZE etc. We *don't* want a PAGE_SIZE
constant to be statically exported to userland; instead userland should
initialize vm_page_size by querying vm_statistics(), and then use
vm_page_size.
We'd also like to eventually avoid exporting VM_MAX_ADDRESS, but this is
not feasible at the moment. To make it feasible in the future, userland
should try to avoid relying on the definition where possible.
Message-ID: <20240415090149.38358-5-bugaevc@gmail.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/mach/vm_param.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/mach/vm_param.h b/include/mach/vm_param.h index 4cbd0eca..8ddb5d99 100644 --- a/include/mach/vm_param.h +++ b/include/mach/vm_param.h @@ -59,9 +59,7 @@ * PAGE_SIZE and PAGE_MASK should also be variables * so their values don't have to be constantly recomputed.) */ -#ifndef PAGE_SHIFT -#error mach/machine/vm_param.h needs to define PAGE_SHIFT. -#endif +#ifdef PAGE_SHIFT #ifndef PAGE_SIZE #define PAGE_SIZE (1 << PAGE_SHIFT) @@ -99,4 +97,6 @@ #define page_aligned(x) ((((vm_offset_t) (x)) & PAGE_MASK) == 0) #define phys_aligned(x) ((((phys_addr_t) (x)) & PAGE_MASK) == 0) +#endif /* PAGE_SHIFT */ + #endif /* _MACH_VM_PARAM_H_ */ |