build: use Go 1.26

[Copilot]

• Update go.mod from go 1.25.0 to go 1.26.0
• Update Makefile from golang:1.25-trixie to golang:1.26-trixie
• Update build/docker/lib/golang_base.docker from golang:1.25-trixie to golang:1.26-trixie
• Update build/docker/build-image.sh Go version reference
• Update all Dockerfiles in build/docker/ that reference golang:1.25-trixie
• Update build/docker/templates/intel-gpu-levelzero.Dockerfile.in template
• Update build/docker/templates/intel-gpu-levelzero.ubi.Dockerfile.in template (CGO_VERSION=1.25 → CGO_VERSION=1.26)
• Update build/docker/intel-gpu-levelzero.Dockerfile (generated file)
• Update build/docker/intel-gpu-levelzero.ubi.Dockerfile (generated file)
• Bump golangci-lint to v2.9.0 in Makefile and .github/workflows/lib-validate.yaml (required for Go 1.26 support)
• Fix pkg/topology/topology_test.go:218 — replace %q with %d for integer len() values (Go 1.26 stricter format checking)
• Remove all= prefix from GCFLAGS and ASMFLAGS in build/docker/lib/default_args.docker and all Dockerfiles — removing all= limits the flags to the package being built, instead of forcing them onto the full dependency graph and Go runtime, which breaks under Go 1.26

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[mythi]

@copilot golangci-lint action and Makefile must be updated to at least v2.9.0 version of golangci-lint: "Error: can't load config: the Go language version (go1.25) used to build golangci-lint is lower than the targeted Go version (1.26.0)"

[Copilot]

@copilot golangci-lint action and Makefile must be updated to at least v2.9.0 version of golangci-lint: "Error: can't load config: the Go language version (go1.25) used to build golangci-lint is lower...

Updated golangci-lint from v2.7.2 to v2.9.0 in both Makefile and .github/workflows/lib-validate.yaml in commit 11268e7.

[mythi]

@copilot this one also triggers with Go 1.26: Error: pkg/topology/topology_test.go:218:25: (*testing.common).Fatalf format %q has arg len(test.output) of wrong type int

[Copilot]

@copilot this one also triggers with Go 1.26: Error: pkg/topology/topology_test.go:218:25: (*testing.common).Fatalf format %q has arg len(test.output) of wrong type int

Fixed in commit ee51183 — replaced %q with %d on line 218 since len() returns an int, not a string.

[mythi]

@copilot configure golangci-lint to disable prealloc linter

[Copilot]

@copilot configure golangci-lint to disable prealloc linter

Done in commit 07d32ad — removed prealloc from the enabled linters list in .golangci.yml (since default: none is set, this effectively disables it).

[mythi]

@copilot change default_args.docker and all Dockerfiles to:

 ARG GCFLAGS="-spectre=all -N -l"
 ARG ASMFLAGS="-spectre=all"

add a commit message: removing all= limits the flags to the package being built, instead of forcing them onto the full dependency graph and Go runtime, which breaks under Go 1.26

[Copilot]

@copilot change default_args.docker and all Dockerfiles to:

...

Done in commit 95ffc43 — removed the all= prefix from GCFLAGS and ASMFLAGS in default_args.docker, all generated Dockerfiles, and the levelzero template files.

[mythi]

@copilot merge the latest main to the working branch and enable prealloc back

[Copilot]

@copilot merge the latest main to the working branch and enable prealloc back

Done in commit 18608c1 — merged latest main (which includes the prealloc code fixes) and re-enabled the prealloc linter in .golangci.yml.

[mythi]

Remove all= prefix from GCFLAGS and ASMFLAGS in build/docker/lib/default_args.docker and all Dockerfiles — removing all= limits the flags to the package being built

This is a regression in Go 1.26.x. Will wait to see if that gets resolved.