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Re: [PATCH] x86/xen: Make virt_to_pfn() a static inline
- To: Linus Walleij <linus.walleij@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Tue, 22 Aug 2023 07:50:06 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- Delivery-date: Tue, 22 Aug 2023 05:50:11 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10.08.23 09:27, Linus Walleij wrote:
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@xxxxxxxxxx>
Pushed to xen/tip.git for-linus-6.6
Juergen
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