Re: [PATCH stable 4.9] arm64: entry: Place an SB sequence following an ERET instruction

2020-06-24 Thread Will Deacon
On Tue, Jun 23, 2020 at 11:46:37AM -0700, Florian Fainelli wrote: > On 6/11/20 9:42 PM, Florian Fainelli wrote: > > From: Will Deacon > > > > commit 679db70801da9fda91d26caf13bf5b5ccc74e8e8 upstream > > > > Some CPUs can speculate past an ERET instruction and potentially perform > > speculative

Re: [PATCH stable 4.9] arm64: entry: Place an SB sequence following an ERET instruction

2020-06-23 Thread Florian Fainelli
On 6/11/20 9:42 PM, Florian Fainelli wrote: > From: Will Deacon > > commit 679db70801da9fda91d26caf13bf5b5ccc74e8e8 upstream > > Some CPUs can speculate past an ERET instruction and potentially perform > speculative accesses to memory before processing the exception return. > Since the register