RE: RSB Alternative bit in IA32_ARCH_CAPABILITIES Was:Re: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs

From: Van De Ven, Arjan
Date: Fri Feb 23 2018 - 13:18:58 EST

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> To add a bit more to this, Intel just updated their
> IA32_ARCH_CAPABILITIES_MSR
> to have a new bit to sample to figure out whether you need IBRS or not
> during runtime.

actually we updated the document when you need RSB stuffing.
based on the request of various folks here on LKML.

Next message: Al Viro: "Re: Removing architectures without upstream gcc support"
Previous message: Thomas Gleixner: "Re: `do_IRQ: 1.55 No irq handler for vector` on ASRock E350M1"
In reply to: Konrad Rzeszutek Wilk: "Is: RSB Alternative bit in IA32_ARCH_CAPABILITIES Was:Re: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs"
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