lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-Id: <171820845262.4013377.6313187525127617561.b4-ty@arm.com>
Date: Wed, 12 Jun 2024 17:07:39 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: maz@...nel.org,
	will@...nel.org,
	mark.rutland@....com,
	oliver.upton@...ux.dev,
	broonie@...nel.org,
	ardb@...nel.org,
	joey.gouly@....com,
	ryan.roberts@....com,
	jeremy.linton@....com,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Nianyao Tang <tangnianyao@...wei.com>
Cc: guoyang2@...wei.com
Subject: Re: [PATCH] arm64/cpufeatures/kvm: Add ARMv8.9 FEAT_ECBHB bits in ID_AA64MMFR1 register

On Tue, 11 Jun 2024 12:20:49 +0000, Nianyao Tang wrote:
> Enable ECBHB bits in ID_AA64MMFR1 register as per ARM DDI 0487K.a
> specification.
> 
> When guest OS read ID_AA64MMFR1_EL1, kvm emulate this reg using
> ftr_id_aa64mmfr1 and always return ID_AA64MMFR1_EL1.ECBHB=0 to guest.
> It results in guest syscall jump to tramp ventry, which is not needed
> in implementation with ID_AA64MMFR1_EL1.ECBHB=1.
> Let's make the guest syscall process the same as the host.
> 
> [...]

Applied to arm64 (for-next/cpufeature), thanks!

[1/1] arm64/cpufeatures/kvm: Add ARMv8.9 FEAT_ECBHB bits in ID_AA64MMFR1 register
      https://git.kernel.org/arm64/c/e8cde32f111f

-- 
Catalin


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ