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[PATCH 0/2] generalise vcpu0 creation for predefined domains
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>
- Date: Thu, 17 Jul 2025 19:51:25 +0200
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- Cc: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, "Volodymyr Babchuk" <Volodymyr_Babchuk@xxxxxxxx>, "Daniel P . Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Andrew Cooper" <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>
- Delivery-date: Thu, 17 Jul 2025 17:52:33 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
This patch is a very compressed version of Daniel's. Originally, it
performed code motion between dom0_build.c and domain-builder/domain.c,
but in order for this to go in early, I've compressed everything in a
single hunk and left it in dom0_build.c.
We can move whatever must be moved later on.
I could see inlining the affinity settings and removing this function
altogether (having a regular vcpu_create() in its place). I've kept it
as is for consistency with the previous patch.
See
https://lore.kernel.org/xen-devel/20250515131744.3843-5-dpsmith@xxxxxxxxxxxxxxxxxxxx/
I've kept the S-by too, as this patch descends directly from that one.
Differences with Daniel's RFC:
* Function takes a domain, as the struct already exists by then.
* Apply dom0 cmdline overrides to control and hardware domains.
* Keep everything in dom0_build.c for the time being.
* Remove arm's incarnation of the function. It's just useless.
Cheers,
Alejandro
Alejandro Vallejo (2):
arm: Remove alloc_dom0_vcpu0()
x86: generalise vcpu0 creation for a domain
xen/arch/arm/domain_build.c | 7 +------
xen/arch/x86/dom0_build.c | 12 ++++++++----
xen/arch/x86/include/asm/dom0_build.h | 5 +++++
xen/arch/x86/setup.c | 6 ++++--
xen/include/xen/domain.h | 1 -
5 files changed, 18 insertions(+), 13 deletions(-)
base-commit: 55719030b0bb0069fc8b57cd808dc98dc9d39add
--
2.43.0
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