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Re: [PATCH] x86/pmstat: deal with Misra 8.4 violations
- To: Jan Beulich <jbeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 19 Nov 2024 12:04:26 +0000
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, "consulting@xxxxxxxxxxx" <consulting@xxxxxxxxxxx>, Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
- Delivery-date: Tue, 19 Nov 2024 12:04:42 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19/11/2024 10:55 am, Andrew Cooper wrote:
> On 19/11/2024 10:30 am, Andrew Cooper wrote:
>> On 19/11/2024 8:12 am, Jan Beulich wrote:
>>> While the override #define-s in x86_64/platform_hypercall.c are good for
>>> the consuming side of the compat variants of set_{cx,px}_pminfo(), the
>>> producers lack the respective declarations. Include pmstat.h early,
>>> before the overrides are put in place, while adding explicit
>>> declarations of the compat functions (alongside structure forward
>>> declarations).
>>>
>>> Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
>>>
>>> --- a/xen/arch/x86/x86_64/platform_hypercall.c
>>> +++ b/xen/arch/x86/x86_64/platform_hypercall.c
>>> @@ -4,8 +4,8 @@
>>>
>>> EMIT_FILE;
>>>
>>> -#include <xen/lib.h>
>>> #include <xen/hypercall.h>
>>> +#include <xen/pmstat.h>
>>>
>>> #define xen_platform_op compat_platform_op
>>> #define xen_platform_op_t compat_platform_op_t
>>> --- a/xen/include/xen/pmstat.h
>>> +++ b/xen/include/xen/pmstat.h
>>> @@ -7,6 +7,12 @@
>>>
>>> int set_px_pminfo(uint32_t acpi_id, struct xen_processor_performance
>>> *perf);
>>> long set_cx_pminfo(uint32_t acpi_id, struct xen_processor_power *power);
>>> +#ifdef CONFIG_COMPAT
>>> +struct compat_processor_performance;
>>> +int compat_set_px_pminfo(uint32_t acpi_id, struct
>>> compat_processor_performance *perf);
>>> +struct compat_processor_power;
>>> +long compat_set_cx_pminfo(uint32_t acpi_id, struct compat_processor_power
>>> *power);
>>> +#endif
>>> uint32_t pmstat_get_cx_nr(unsigned int cpu);
>>> int pmstat_get_cx_stat(unsigned int cpu, struct pm_cx_stat *stat);
>>> int pmstat_reset_cx_stat(unsigned int cpu);
>>>
>> Thanks for the patch. I'll give it a spin along with the other 8.4 fixes.
> https://gitlab.com/xen-project/people/andyhhp/xen/-/pipelines/1550621091
> pending to run, with all 8.4 fixes including a prototype fix for the
> do_mca() issue too.
Eclair was happy with the result, so:
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Tested-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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