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Re: [PATCH v5 2/3] arm/mpu: Introduce `v8r_el1_msa` device tree property for domains
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Luca Fancellu <Luca.Fancellu@xxxxxxx>
- Date: Mon, 11 May 2026 12:59:45 +0000
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- Cc: Harry Ramsey <Harry.Ramsey@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <Bertrand.Marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 11 May 2026 13:01:04 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Nodisclaimer: true
- Thread-index: AQHc3vfGpFkxMscyakiMWMN4gJbZfLYIlReAgAA46oA=
- Thread-topic: [PATCH v5 2/3] arm/mpu: Introduce `v8r_el1_msa` device tree property for domains
Hi Jan,
> On 11 May 2026, at 10:35, Jan Beulich <jbeulich@xxxxxxxx> wrote:
>
> On 08.05.2026 16:33, Luca Fancellu wrote:
>> --- a/xen/include/public/arch-arm.h
>> +++ b/xen/include/public/arch-arm.h
>> @@ -330,6 +330,10 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_guest_context_t);
>> #define XEN_DOMCTL_CONFIG_ARM_SCI_NONE 0
>> #define XEN_DOMCTL_CONFIG_ARM_SCI_SCMI_SMC 1
>>
>> +#define XEN_DOMCTL_CONFIG_ARM_V8R_EL1_MSA_NONE 0
>> +#define XEN_DOMCTL_CONFIG_ARM_V8R_EL1_MSA_PMSA 1
>> +#define XEN_DOMCTL_CONFIG_ARM_V8R_EL1_MSA_VMSA 2
>> +
>> struct xen_arch_domainconfig {
>> /* IN/OUT */
>> uint8_t gic_version;
>> @@ -355,6 +359,8 @@ struct xen_arch_domainconfig {
>> uint32_t clock_frequency;
>> /* IN */
>> uint8_t arm_sci_type;
>> + /* IN */
>> + uint8_t v8r_el1_msa;
>> };
>
> Can you please take the opportunity and insert (and check) explicit
> padding, so that the next uint8_t field addition won't require ...
>
>> --- a/xen/include/public/domctl.h
>> +++ b/xen/include/public/domctl.h
>> @@ -30,9 +30,9 @@
>> * fields) don't require a change of the version.
>> * Stable ops are NOT covered by XEN_DOMCTL_INTERFACE_VERSION!
>> *
>> - * Last version bump: Xen 4.19
>> + * Last version bump: Xen 4.22
>> */
>> -#define XEN_DOMCTL_INTERFACE_VERSION 0x00000017
>> +#define XEN_DOMCTL_INTERFACE_VERSION 0x00000018
>
> ... such a bump?
Yes, will be part of v6, thanks for your review.
Cheers,
Luca
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