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Re: [PATCH v4 16/24] xen/domctl: wrap iommu-related domctl op with CONFIG_MGMT_HYPERCALLS
- To: Penny Zheng <Penny.Zheng@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 25 Nov 2025 16:42:07 +0100
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- Cc: ray.huang@xxxxxxx, grygorii_strashko@xxxxxxxx, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 25 Nov 2025 15:42:17 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 21.11.2025 11:57, Penny Zheng wrote:
> Function iommu_do_domctl() is the main entry for all iommu-related domctl-op,
> and shall be wrapped with CONFIG_MGMT_HYPERCALLS.
> Otherwise it will become unreachable when MGMT_HYPERCALLS=n, and hence
> violating Misra rule 2.1
>
> Signed-off-by: Penny Zheng <Penny.Zheng@xxxxxxx>
> ---
> v3 -> v4:
> - new commit
> ---
> Commit "xen/domctl: wrap pci-subset iommu-related domctl op with
> CONFIG_MGMT_HYPERCALLS" and "xen/domctl: wrap device-tree-subset iommu-related
> domctl op with CONFIG_MGMT_HYPERCALLS" are the prereq commit.
You state the normal thing here: The general assumption is that later patches
in a series depend on earlier ones. What you want to state is when this general
rule doesn't apply, i.e. when patches can move ahead (some or entirely), and
hence can be committed when they alone are ready, without having other
dependencies (or with having only some).
> ---
> xen/drivers/passthrough/iommu.c | 2 ++
> 1 file changed, 2 insertions(+)
The latest here xen/iommu.h also needs touching, as just said in reply to
patch 14. Unused hooks shall stay around.
Jan
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