[RESEND,0/6] arm64: add support for generic cpu vulnerabilities

Message

Mian Yousaf Kaukab Aug. 27, 2018, 2:33 p.m. UTC

GENERIC_CPU_VULNERABILITIES provide a common way to figure out if a
system is affected by vulnerabilities like meltdown and other variants
of spectre. This small series adds support for it in arm64.

Thank you,

Best regards,
Yousaf

Mian Yousaf Kaukab (6):
  arm64: kpti: move check for non-vulnerable CPUs to a function
  arm64: add sysfs vulnerability show for meltdown
  arm64: add sysfs vulnerability show for spectre v1
  arm64: add sysfs vulnerability show for spectre v2
  arm64: add sysfs vulnerability show for speculative store bypass
  arm64: enable generic CPU vulnerabilites support

 arch/arm64/Kconfig                  |  1 +
 arch/arm64/include/asm/cpufeature.h | 16 +++++++
 arch/arm64/kernel/cpu_errata.c      | 84 ++++++++++++++++++++++++++++++++++++-
 arch/arm64/kernel/cpufeature.c      |  9 +---
 4 files changed, 101 insertions(+), 9 deletions(-)

Comments

Mian Yousaf Kaukab Sept. 5, 2018, 9:25 a.m. UTC | #1

On Mon, Aug 27, 2018 at 04:33:04PM +0200, Mian Yousaf Kaukab wrote:
> GENERIC_CPU_VULNERABILITIES provide a common way to figure out if a
> system is affected by vulnerabilities like meltdown and other variants
> of spectre. This small series adds support for it in arm64.

Marc, Will, Can you please review this series?
Please let me know if I should rebase it against arm64 tree.

Thanks,
Yousaf

Will Deacon Sept. 17, 2018, 1:35 p.m. UTC | #2

On Wed, Sep 05, 2018 at 11:25:33AM +0200, Mian Yousaf Kaukab wrote:
> On Mon, Aug 27, 2018 at 04:33:04PM +0200, Mian Yousaf Kaukab wrote:
> > GENERIC_CPU_VULNERABILITIES provide a common way to figure out if a
> > system is affected by vulnerabilities like meltdown and other variants
> > of spectre. This small series adds support for it in arm64.
> 
> Marc, Will, Can you please review this series?

Sorry it took so long to get to this, it's just consistently failed to
get to the top of my review queue. I had a quick look just now and there
are a few things to address before we can take the series.

Cheers,

Will

Mian Yousaf Kaukab Sept. 24, 2018, 10:06 a.m. UTC | #3

On Mon, Sep 17, 2018 at 02:35:08PM +0100, Will Deacon wrote:
> On Wed, Sep 05, 2018 at 11:25:33AM +0200, Mian Yousaf Kaukab wrote:
> > On Mon, Aug 27, 2018 at 04:33:04PM +0200, Mian Yousaf Kaukab wrote:
> > > GENERIC_CPU_VULNERABILITIES provide a common way to figure out if a
> > > system is affected by vulnerabilities like meltdown and other variants
> > > of spectre. This small series adds support for it in arm64.
> > 
> > Marc, Will, Can you please review this series?
> 
> Sorry it took so long to get to this, it's just consistently failed to
> get to the top of my review queue. I had a quick look just now and there
> are a few things to address before we can take the series.
Thank you for the review. I will get back to you after fixing the comments as soon as possible.

> 
> Cheers,
> 
> Will

Thanks,
Yousaf