Re: [PATCH v2 11/11] arm64: Implement branch predictor hardening for affected Cortex-A CPUs

On 05/01/18 14:46, James Morse wrote: > Hi Marc, Will, > > (SOB-chain suggests a missing From: tag on this and patch 7) > > On 05/01/18 13:12, Will Deacon wrote: >> Cortex-A57, A72, A73 and A75 are susceptible to branch predictor aliasing >> and can theoretically be attacked by malicious code. >>

Re: [PATCH v2 11/11] arm64: Implement branch predictor hardening for affected Cortex-A CPUs

Hi Marc, Will, (SOB-chain suggests a missing From: tag on this and patch 7) On 05/01/18 13:12, Will Deacon wrote: > Cortex-A57, A72, A73 and A75 are susceptible to branch predictor aliasing > and can theoretically be attacked by malicious code. > > This patch implements a PSCI-based mitigation f

[PATCH v2 11/11] arm64: Implement branch predictor hardening for affected Cortex-A CPUs

Cortex-A57, A72, A73 and A75 are susceptible to branch predictor aliasing and can theoretically be attacked by malicious code. This patch implements a PSCI-based mitigation for these CPUs when available. The call into firmware will invalidate the branch predictor state, preventing any malicious en