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| author | Linus Walleij <linus.walleij@linaro.org> | 2023-08-10 10:27:04 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2023-08-21 10:52:29 +0300 |
| commit | 067e4f174f6d4ecf8872ad93d859d57bab44f7b6 (patch) | |
| tree | e3ca256efdf0b85d1455569f9fc1d04eefc13ca4 /arch/x86/include/asm | |
| parent | d826c9e61c99120f8996f8fed6417167e32eb922 (diff) | |
| download | linux-067e4f174f6d4ecf8872ad93d859d57bab44f7b6.tar.xz | |
x86/xen: Make virt_to_pfn() a static inline
Making virt_to_pfn() a static inline taking a strongly typed
(const void *) makes the contract of a passing a pointer of that
type to the function explicit and exposes any misuse of the
macro virt_to_pfn() acting polymorphic and accepting many types
such as (void *), (unitptr_t) or (unsigned long) as arguments
without warnings.
Also fix all offending call sites to pass a (void *) rather
than an unsigned long. Since virt_to_mfn() is wrapping
virt_to_pfn() this function has become polymorphic as well
so the usage need to be fixed up.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20230810-virt-to-phys-x86-xen-v1-1-9e966d333e7a@linaro.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/xen/page.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h index fa9ec20783fa..85e63d58c074 100644 --- a/arch/x86/include/asm/xen/page.h +++ b/arch/x86/include/asm/xen/page.h @@ -295,7 +295,10 @@ static inline unsigned long bfn_to_local_pfn(unsigned long mfn) /* VIRT <-> MACHINE conversion */ #define virt_to_machine(v) (phys_to_machine(XPADDR(__pa(v)))) -#define virt_to_pfn(v) (PFN_DOWN(__pa(v))) +static inline unsigned long virt_to_pfn(const void *v) +{ + return PFN_DOWN(__pa(v)); +} #define virt_to_mfn(v) (pfn_to_mfn(virt_to_pfn(v))) #define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT)) |