From: Borislav Petkov <bp@alien8.de>
To: "Saripalli, RK" <rsaripal@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>,
linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH 0/5] Introduce support for PSF mitigation
Date: Fri, 9 Apr 2021 11:07:46 +0200 [thread overview]
Message-ID: <20210409090746.GB15567@zn.tnic> (raw)
In-Reply-To: <e72bc628-111f-5e3a-bb79-7e77c9fe0424@amd.com>
On Thu, Apr 08, 2021 at 09:56:47AM -0500, Saripalli, RK wrote:
> It is possible most applications have been reviewed and scrubbed for
> SSB-type attacks but PSF-type issues may not have been looked at yet.
> This may be one of the cases where SSB is enabled but PSF is disabled
> until the application(s) are scrubbed for the same.
Right, and for that I think we could do a slimmer version of the psfd=
toggle - no prctl and seccomp stuff - just the cmdline disable thing to
keep this simpler.
Btw "psfd=" is maybe too short and cryptic. It would probably be more
user-friendly if it were called:
predict_store_fwd={on,off,...}
or so.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-04-09 9:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 15:49 [PATCH 0/5] Introduce support for PSF mitigation Ramakrishna Saripalli
2021-04-06 15:50 ` [PATCH 1/5] x86/cpufeatures: Define feature bits to support mitigation of PSF Ramakrishna Saripalli
2021-04-09 17:41 ` Borislav Petkov
2021-04-09 18:22 ` Saripalli, RK
2021-04-09 19:39 ` Borislav Petkov
2021-04-09 19:45 ` Saripalli, RK
2021-04-09 20:19 ` Borislav Petkov
2021-04-09 20:29 ` Saripalli, RK
2021-04-06 15:50 ` [PATCH 2/5] x86/speculation: Implement support for PSFD detection and reporting Ramakrishna Saripalli
2021-04-06 15:50 ` [PATCH 3/5] x86/speculation: Introduce SPEC_CTRL_MSR bit for PSFD Ramakrishna Saripalli
2021-04-06 15:50 ` [PATCH 4/5] x86/speculation: Implement PSF mitigation support Ramakrishna Saripalli
2021-04-06 15:50 ` [PATCH 5/5] x86/speculation: Add PSF mitigation kernel parameters Ramakrishna Saripalli
2021-04-06 17:26 ` [PATCH 0/5] Introduce support for PSF mitigation Borislav Petkov
2021-04-07 22:39 ` Josh Poimboeuf
2021-04-08 14:56 ` Saripalli, RK
2021-04-09 9:07 ` Borislav Petkov [this message]
2021-04-09 16:45 ` Josh Poimboeuf
2021-04-09 16:50 ` Saripalli, RK
2021-04-07 12:49 Ramakrishna Saripalli
2021-04-07 14:01 ` Borislav Petkov
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