Re: [PATCH v2 2/2] cpu: fix hard lockup triggered by printk calls within scheduling context
From: Will Deacon <will@kernel.org>
Date: 2025-10-30 14:50:12
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On Wed, Oct 29, 2025 at 11:45:54AM +0800, shechenglong wrote:
quoted hunk ↗ jump to hunk
@@ -1197,3 +1185,15 @@ void unpriv_ebpf_notify(int new_state) pr_err("WARNING: %s", EBPF_WARN); } #endif + +void spectre_print_disabled_mitigations(void) +{ + if (spectre_v2_mitigations_off()) + pr_info("spectre-v2 mitigation disabled by command-line option\n"); + + if (spectre_v4_mitigations_off()) + pr_info("spectre-v4 mitigation disabled by command-line option\n"); + + if (__nospectre_bhb || cpu_mitigations_off()) + pr_info("spectre-bhb mitigation disabled by command-line option\n");
Is the compiler smart enough to store a single string for the "mitigation disabled by command-line option\n" part? If not, you might want to use %s to avoid wasting memory. (I was going to check with llvm but I'm unable to apply your changes due to whitespace corruption). Will