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x86/hyperv: Fix smp_ops build failure on UP kernels

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CI testing found this build failure:

  arch/x86/hyperv/hv_crash.c:631:9: error: ‘smp_ops’ undeclared (first use in this function)

And I bisected it back to the initial commit that enabled this feature:

  77c860d2db is the first bad commit
  commit 77c860d2db (HEAD)
  Author: Mukesh Rathor <mrathor@linux.microsoft.com>
  Date:   Mon Oct 6 15:42:08 2025 -0700

  x86/hyperv: Enable build of hypervisor crashdump collection files

Hyperv should probably be limited to SMP kernels, as nobody
appears to be testing it on UP kernels.

Until then, fix the smp_ops assumption. Build tested only.

Fixes: 77c860d2db ("x86/hyperv: Enable build of hypervisor crashdump collection files")
Cc: Mukesh Rathor <mrathor@linux.microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2026-01-28 11:35:20 +01:00
parent 63804fed14
commit ac059ae422
1 changed files with 2 additions and 0 deletions
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2
arch/x86/hyperv/hv_crash.c
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@ -628,7 +628,9 @@ void hv_root_crash_init(void)
if (rc)
goto err_out;
#ifdef CONFIG_SMP
smp_ops.crash_stop_other_cpus = hv_crash_stop_other_cpus;
#endif
crash_kexec_post_notifiers = true;
hv_crash_enabled = true;