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Re: [PATCH v5 39/44] x86/boot: introduce domid field to struct boot_domain
- To: Jason Andryuk <jason.andryuk@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 9 Oct 2024 08:54:52 +0200
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- Cc: christopher.w.clark@xxxxxxxxx, stefano.stabellini@xxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 09 Oct 2024 06:54:56 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.10.2024 21:36, Jason Andryuk wrote:
> On 2024-10-06 17:49, Daniel P. Smith wrote:
>> Add a domid field to struct boot_domain to hold the assigned domain id for
>> the
>> domain. During initialization, ensure all instances of struct boot_domain
>> have
>> the invalid domid to ensure that the domid must be set either by convention
>> or
>> configuration.
>>
>> Signed-off-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
>> ---
>> xen/arch/x86/include/asm/bootdomain.h | 2 ++
>> xen/arch/x86/setup.c | 12 +++++++-----
>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>
>> diff --git a/xen/arch/x86/include/asm/bootdomain.h
>> b/xen/arch/x86/include/asm/bootdomain.h
>> index 4285223ac5ab..d6264d554dba 100644
>> --- a/xen/arch/x86/include/asm/bootdomain.h
>> +++ b/xen/arch/x86/include/asm/bootdomain.h
>> @@ -11,6 +11,8 @@
>> struct boot_module;
>>
>> struct boot_domain {
>> + domid_t domid;
>> +
>> struct boot_module *kernel;
>> struct boot_module *ramdisk;
>> };
>
> Oh, you should probably move domid after the pointers to avoid a hole.
That would only move the hole to the end of the struct.
Jan
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