ARM64 notes: Re: [PATCH] CI: Extend eclair-*-allcode to enable as much as possible

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 05/01/2026 12:24 pm, Andrew Cooper wrote:
>  eclair-x86_64-testing:
> @@ -104,6 +122,33 @@ eclair-ARM64-allcode:
>      LOGFILE: "eclair-ARM64.log"
>      VARIANT: "ARM64"
>      RULESET: "monitored"
> +    EXTRA_XEN_CONFIG: |
> +      CONFIG_ACPI=y
> +      CONFIG_ARGO=y
> +      CONFIG_ARM64_SVE=y
> +      CONFIG_ARM_SMMU_V3=y
> +      CONFIG_BOOT_TIME_CPUPOOLS=y
> +      CONFIG_DEBUG_LOCK_PROFILE=y
> +      CONFIG_DEBUG_TRACE=y
> +      CONFIG_DEVICE_TREE_DEBUG=y
> +      CONFIG_EFI_SET_VIRTUAL_ADDRESS_MAP=y
> +      CONFIG_EXPERT=y
> +      CONFIG_FFA=y
> +      CONFIG_FFA_VM_TO_VM=y
> +      CONFIG_GICV3_ESPI=y
> +      CONFIG_HAS_ITS=y
> +      CONFIG_IOREQ_SERVER=y
> +      CONFIG_IPMMU_VMSA=y
> +      CONFIG_LIVEPATCH=y
> +      CONFIG_LLC_COLORING=y
> +      CONFIG_OPTEE=y
> +      CONFIG_OVERLAY_DTB=y
> +      CONFIG_PCI_PASSTHROUGH=y
> +      CONFIG_PERF_ARRAYS=y
> +      CONFIG_PERF_COUNTERS=y
> +      CONFIG_STACK_PROTECTOR=y
> +      CONFIG_UNSUPPORTED=y
> +      CONFIG_VM_EVENT=y
>    allow_failure: true

https://gitlab.com/xen-project/hardware/xen-staging/-/jobs/12604499722
shows 122 failures in otherwise-clean guidelines.  Some observations:

llc-colouring.c uses binary literals.  These are safe to use now since
4.21 with the updated toolchain baseline, but the Eclair config wants
updating to allow this language extension.

ipmmu-vmsa.c has a git:// url inside a block comment, which is
considered to be a Rule 3.1 violation.  In principle this ought to fix it:

diff --git a/automation/eclair_analysis/ECLAIR/deviations.ecl 
b/automation/eclair_analysis/ECLAIR/deviations.ecl
index 7dee4a488d45..8f5fc6c93bc5 100644
--- a/automation/eclair_analysis/ECLAIR/deviations.ecl
+++ b/automation/eclair_analysis/ECLAIR/deviations.ecl
@@ -60,7 +60,7 @@ removed by the compiler, the resulting slowdown is 
negligible."
 
 -doc_begin="Comments starting with '/*' and containing hyperlinks are safe as
 they are not instances of commented-out code."
--config=MC3A2.R3.1,reports+={safe, "first_area(text(^.*https?://.*$))"}
+-config=MC3A2.R3.1,reports+={safe, "first_area(text(^.*(https?|git)://.*$))"}
 -doc_end
 
 #


but I've not tried it yet.

There's a R8.4 violation against __stack_chk_guard.  I think this wants
deviating locally, because it's a fairly magic construct.

Other than that, there's a smattering of violations.  Some will be fixed
by some work I've got pending for the x86 side of things, but most are
specific to arch/arm/.

~Andrew