Messages in this thread | | | Subject | Re: [PATCH 4/4] x86/speculation: Add PSF mitigation kernel parameters | From | Randy Dunlap <> | Date | Wed, 21 Apr 2021 09:04:30 -0700 |
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Hi,
On 4/21/21 2:01 AM, Ramakrishna Saripalli wrote: > From: Ramakrishna Saripalli <rk.saripalli@amd.com> > > PSF mitigation introduces a new kernel parameter called > predict_store_fwd. > > Signed-off-by: Ramakrishna Saripalli<rk.saripalli@amd.com> > --- > Documentation/admin-guide/kernel-parameters.txt | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > index 04545725f187..58f6bd02385b 100644 > --- a/Documentation/admin-guide/kernel-parameters.txt > +++ b/Documentation/admin-guide/kernel-parameters.txt > @@ -3940,6 +3940,11 @@ > Format: {"off"} > Disable Hardware Transactional Memory > > + predict_store_fwd [X86] This option controls PSF mitigation > + off - Turns on PSF mitigation. > + on - Turns off PSF mitigation. > + default : on.
This should be formatted more like:
+ predict_store_fwd= [X86] This option controls PSF mitigation + off - Turns on PSF mitigation. + on - Turns off PSF mitigation. + default: on.
But why does "off" turn it on and "on" turn it off?
> + > preempt= [KNL] > Select preemption mode if you have CONFIG_PREEMPT_DYNAMIC > none - Limited to cond_resched() calls >
thanks. -- ~Randy
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