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Re: [PATCH] x86/hvm: Allow hvm_copy_to_guest_*() to come from const sources
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 19 Jul 2023 14:34:31 +0200
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Wed, 19 Jul 2023 12:34:47 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.07.2023 14:24, Andrew Cooper wrote:
> The work to fix MISRA rule 7.4 (using mutable pointers to string literals)
> identifies that string literals do indeed get passed into
> hvm_copy_to_guest_linear() by way of the PVH dom0 command line.
>
> This higlights that the copy_to_* helpers really ought to take a const
> source. Update the function types to match, and cast away constness in the
> wrappers around __hvm_copy() where HVMCOPY_to_guest is used.
>
> No functional change.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Well, yes, what do you do.
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Jan
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