From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Diana Craciun <diana.craciun@nxp.com>, linuxppc-dev@lists.ozlabs.org
Cc: Diana Craciun <diana.craciun@nxp.com>
Subject: Re: [01/11] powerpc/fsl: Add infrastructure to fixup branch predictor flush
Date: Sat, 22 Dec 2018 20:54:44 +1100 (AEDT) [thread overview]
Message-ID: <43MLSh41XRz9sPF@ozlabs.org> (raw)
In-Reply-To: <1544623390-18710-2-git-send-email-diana.craciun@nxp.com>
On Wed, 2018-12-12 at 14:03:00 UTC, Diana Craciun wrote:
> In order to protect against speculation attacks (Spectre
> variant 2) on NXP PowerPC platforms, the branch predictor
> should be flushed when the privillege level is changed.
> This patch is adding the infrastructure to fixup at runtime
> the code sections that are performing the branch predictor flush
> depending on a boot arg parameter which is added later in a
> separate patch.
>
> Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/76a5eaa38b15dda92cd6964248c39b
cheers
next prev parent reply other threads:[~2018-12-22 10:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-12 14:02 [PATCH 00/11] powerpc/fsl: NXP PowerPC Spectre variant 2 workarounds Diana Craciun
2018-12-12 14:03 ` [PATCH 01/11] powerpc/fsl: Add infrastructure to fixup branch predictor flush Diana Craciun
2018-12-22 9:54 ` Michael Ellerman [this message]
2018-12-12 14:03 ` [PATCH 02/11] powerpc/fsl: Add macro to flush the branch predictor Diana Craciun
2018-12-12 14:03 ` [PATCH 03/11] powerpc/fsl: Fix spectre_v2 mitigations reporting Diana Craciun
2018-12-12 14:03 ` [PATCH 04/11] powerpc/fsl: Emulate SPRN_BUCSR register Diana Craciun
2018-12-12 14:03 ` [PATCH 05/11] powerpc/fsl: Add nospectre_v2 command line argument Diana Craciun
2018-12-12 14:03 ` [PATCH 06/11] powerpc/fsl: Flush the branch predictor at each kernel entry (64bit) Diana Craciun
2018-12-12 14:03 ` [PATCH 07/11] powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit) Diana Craciun
2018-12-19 9:42 ` kbuild test robot
2018-12-12 14:03 ` [PATCH 08/11] powerpc/fsl: Flush branch predictor when entering KVM Diana Craciun
2018-12-12 14:03 ` [PATCH 09/11] powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used Diana Craciun
2018-12-12 14:03 ` [PATCH 10/11] powerpc/fsl: Update Spectre v2 reporting Diana Craciun
2018-12-12 14:03 ` [PATCH 11/11] powerpc/fsl: Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg Diana Craciun
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