Messages in this thread | | | Date | Fri, 2 Feb 2018 11:35:25 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: [PATCH] x86/retpoline: check CONFIG_RETPOLINE option when SPECTRE_V2_CMD_AUTO |
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On Fri, 2 Feb 2018, Chen Baozi wrote:
> Currently, if there is no spectre_v2= or nospectre_v2 specified in the boot > parameter, the kernel will automatically choose mitigation by default. > However, when selecting the auto mode, it doesn't check whether the > retpoline has been built in the kernel. Thus, if someone built a kernel > without CONFIG_RETPOLINE and booted the system without specifying any > spectre_v2 kernel parameters, the kernel would still report that it has > enabled a minimal retpoline mitigation which is not the case. This patch > adds the checking of CONFIG_RETPOLINE option under the 'auto' mode to fix > it.
Thanks for sending that patch, but its already fixed and queued for upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/pti&id=9471eee9186a46893726e22ebb54cade3f9bc043
Thanks,
tglx
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