From: "Pali Rohár" <pali.rohar@gmail.com>
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: "Pavel Machek" <pavel@ucw.cz>, "Alex Shi" <alex.shi@linaro.org>,
sre@kernel.org, linux-omap@vger.kernel.org, tony@atomide.com,
khilman@kernel.org, aaro.koskinen@iki.fi,
ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com,
serge@hallyn.com, abcloriens@gmail.com, clayton@craftyguy.net,
martijn@brixit.nl, sakari.ailus@linux.intel.com,
"Filip Matijević" <filip.matijevic.pz@gmail.com>,
"Will Deacon" <will.deacon@arm.com>,
"Ard Biesheuvel" <ard.biesheuvel@linaro.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 00/45] arm Spectre fix backport review for LTS 4.9
Date: Thu, 8 Mar 2018 18:01:53 +0100 [thread overview]
Message-ID: <20180308170153.376gcwwudwkq3gs7@pali> (raw)
In-Reply-To: <07d4709b-df73-0107-ce0f-5af55e34913e@arm.com>
[-- Attachment #1: Type: text/plain, Size: 1706 bytes --]
On Thursday 08 March 2018 13:35:49 Marc Zyngier wrote:
> On 08/03/18 13:21, Pali Rohár wrote:
> > On Thursday 08 March 2018 13:27:15 Pavel Machek wrote:
> >> Hi!
> >>
> >>> Resent without non-upstream patches.
> >>>
> >>> This backport patchset fixed the spectre issue, it's original branch:
> >>> https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=kpti
> >>> A few dependency or fixingpatches are also picked up, if they are necessary
> >>> and no functional changes.
> >>>
> >>> No bug found from kernelci.org and lkft testing. It also could be gotten from:
> >>>
> >>> git://git.linaro.org/kernel/linux-linaro-stable.git v4.9-spectre-upstream-only
> >>>
> >>> Comments are appreciated!
> >>
> >> Not entirely related to this patched, but... I have few older ARM
> >> boards here, and Nokia N9000 I really care about.
> >>
> >> AFAICT Meltdown is arm64 only?
> >
> > IIRC ARMv7 is not affected by meltdown.
> >
> >> Spectre affects the older boards, too, right? Was there any work done
> >> on that? cpuinfo says "ARMv7" for N900.
> >
> > I remember that I saw some spectre patches for ARMv7 on LKML.
This is that patch series:
https://www.spinics.net/lists/arm-kernel/msg632065.html
> > In general for ARMv7 it is problematic as mitigation needs to change IBE
>
> Not quite. IBE is part of ACTLR, which is an implementation defined
> register, so generalizing this statement to "ARMv7" is plain wrong. Case
> in point: A9, A12/A17 do not need any bit to be set. A8 needs IBE to
> allow BPIALL to work, A15 needs it for ICIALLUI to perform a BP
> invalidation.
Ok, Nokia N900 has Cortex A8.
--
Pali Rohár
pali.rohar@gmail.com
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]
prev parent reply other threads:[~2018-03-08 17:01 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-01 12:53 Alex Shi
2018-03-01 12:53 ` [PATCH 01/45] mm: Introduce lm_alias Alex Shi
2018-03-01 12:53 ` [PATCH 02/45] arm64: alternatives: apply boot time fixups via the linear mapping Alex Shi
2018-03-01 12:53 ` [PATCH 03/45] arm64: barrier: Add CSDB macros to control data-value prediction Alex Shi
2018-03-01 12:53 ` [PATCH 04/45] arm64: Implement array_index_mask_nospec() Alex Shi
2018-03-01 12:53 ` [PATCH 05/45] arm64: move TASK_* definitions to <asm/processor.h> Alex Shi
2018-03-01 12:53 ` [PATCH 06/45] arm64: Factor out PAN enabling/disabling into separate uaccess_* macros Alex Shi
2018-03-01 12:53 ` [PATCH 07/45] arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro Alex Shi
2018-03-01 12:53 ` [PATCH 08/45] arm64: uaccess: consistently check object sizes Alex Shi
2018-03-01 12:53 ` [PATCH 09/45] arm64: Make USER_DS an inclusive limit Alex Shi
2018-03-01 12:53 ` [PATCH 10/45] arm64: Use pointer masking to limit uaccess speculation Alex Shi
2018-03-01 12:53 ` [PATCH 11/45] arm64: syscallno is secretly an int, make it official Alex Shi
2018-03-01 12:53 ` [PATCH 12/45] arm64: entry: Ensure branch through syscall table is bounded under speculation Alex Shi
2018-03-01 12:53 ` [PATCH 13/45] arm64: uaccess: Prevent speculative use of the current addr_limit Alex Shi
2018-03-01 12:53 ` [PATCH 14/45] arm64: uaccess: Don't bother eliding access_ok checks in __{get, put}_user Alex Shi
2018-03-01 12:53 ` [PATCH 15/45] arm64: uaccess: Mask __user pointers for __arch_{clear, copy_*}_user Alex Shi
2018-03-01 12:53 ` [PATCH 16/45] arm64: futex: Mask __user pointers prior to dereference Alex Shi
2018-03-01 12:53 ` [PATCH 17/45] drivers/firmware: Expose psci_get_version through psci_ops structure Alex Shi
2018-03-01 12:53 ` [PATCH 18/45] arm64: cpufeature: __this_cpu_has_cap() shouldn't stop early Alex Shi
2018-03-01 12:53 ` [PATCH 19/45] arm64: cpu_errata: Allow an erratum to be match for all revisions of a core Alex Shi
2018-03-01 12:53 ` [PATCH 20/45] arm64: Run enable method for errata work arounds on late CPUs Alex Shi
2018-03-01 12:53 ` [PATCH 21/45] arm64: cpufeature: Pass capability structure to ->enable callback Alex Shi
2018-03-01 12:53 ` [PATCH 22/45] arm64: Move post_ttbr_update_workaround to C code Alex Shi
2018-03-01 12:54 ` [PATCH 23/45] arm64: Add skeleton to harden the branch predictor against aliasing attacks Alex Shi
2018-03-01 12:54 ` [PATCH 24/45] arm64: Move BP hardening to check_and_switch_context Alex Shi
2018-03-01 12:54 ` [PATCH 25/45] arm64: KVM: Use per-CPU vector when BP hardening is enabled Alex Shi
2018-03-01 12:54 ` [PATCH 26/45] arm64: entry: Apply BP hardening for high-priority synchronous exceptions Alex Shi
2018-03-01 12:54 ` [PATCH 27/45] arm64: entry: Apply BP hardening for suspicious interrupts from EL0 Alex Shi
2018-03-01 12:54 ` [PATCH 28/45] arm64: cputype: Add missing MIDR values for Cortex-A72 and Cortex-A75 Alex Shi
2018-03-01 12:54 ` [PATCH 29/45] arm64: Implement branch predictor hardening for affected Cortex-A CPUs Alex Shi
2018-03-01 12:54 ` [PATCH 30/45] arm64: KVM: Increment PC after handling an SMC trap Alex Shi
2018-03-01 12:54 ` [PATCH 31/45] arm/arm64: KVM: Consolidate the PSCI include files Alex Shi
2018-03-01 12:54 ` [PATCH 32/45] arm/arm64: KVM: Add PSCI_VERSION helper Alex Shi
2018-03-01 12:54 ` [PATCH 33/45] arm/arm64: KVM: Add smccc accessors to PSCI code Alex Shi
2018-03-01 12:54 ` [PATCH 34/45] arm/arm64: KVM: Implement PSCI 1.0 support Alex Shi
2018-03-01 12:54 ` [PATCH 35/45] arm/arm64: KVM: Advertise SMCCC v1.1 Alex Shi
2018-03-01 12:54 ` [PATCH 36/45] arm64: KVM: Make PSCI_VERSION a fast path Alex Shi
2018-03-01 12:54 ` [PATCH 37/45] arm/arm64: KVM: Turn kvm_psci_version into a static inline Alex Shi
2018-03-01 12:54 ` [PATCH 38/45] arm64: KVM: Report SMCCC_ARCH_WORKAROUND_1 BP hardening support Alex Shi
2018-03-01 12:54 ` [PATCH 39/45] arm64: KVM: Add SMCCC_ARCH_WORKAROUND_1 fast handling Alex Shi
2018-03-01 12:54 ` [PATCH 40/45] firmware/psci: Expose PSCI conduit Alex Shi
2018-03-01 12:54 ` [PATCH 41/45] firmware/psci: Expose SMCCC version through psci_ops Alex Shi
2018-03-01 12:54 ` [PATCH 42/45] arm/arm64: smccc: Make function identifiers an unsigned quantity Alex Shi
2018-03-01 12:54 ` [PATCH 43/45] arm/arm64: smccc: Implement SMCCC v1.1 inline primitive Alex Shi
2018-03-01 12:54 ` [PATCH 44/45] arm64: Add ARM_SMCCC_ARCH_WORKAROUND_1 BP hardening support Alex Shi
2018-03-01 12:54 ` [PATCH 45/45] arm64: Kill PSCI_GET_VERSION as a variant-2 workaround Alex Shi
2018-03-01 16:45 ` [PATCH 00/45] arm Spectre fix backport review for LTS 4.9 Greg KH
2018-03-02 7:26 ` Alex Shi
2018-03-01 16:46 ` Greg KH
2018-03-02 9:02 ` Alex Shi
2018-03-02 10:29 ` Marc Zyngier
2018-03-03 0:52 ` Alex Shi
2018-03-02 10:30 ` Will Deacon
2018-03-03 0:54 ` Alex Shi
2018-03-08 12:27 ` Pavel Machek
2018-03-08 13:21 ` Pali Rohár
2018-03-08 13:33 ` Ivaylo Dimitrov
2018-03-08 13:35 ` Marc Zyngier
2018-03-08 17:01 ` Pali Rohár [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180308170153.376gcwwudwkq3gs7@pali \
--to=pali.rohar@gmail.com \
--cc=aaro.koskinen@iki.fi \
--cc=abcloriens@gmail.com \
--cc=alex.shi@linaro.org \
--cc=ard.biesheuvel@linaro.org \
--cc=catalin.marinas@arm.com \
--cc=clayton@craftyguy.net \
--cc=filip.matijevic.pz@gmail.com \
--cc=ivo.g.dimitrov.75@gmail.com \
--cc=khilman@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=martijn@brixit.nl \
--cc=patrikbachan@gmail.com \
--cc=pavel@ucw.cz \
--cc=sakari.ailus@linux.intel.com \
--cc=serge@hallyn.com \
--cc=sre@kernel.org \
--cc=stable@vger.kernel.org \
--cc=tony@atomide.com \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®