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SubjectRe: [PATCH] x86,perf: Disable intel_bts when PTI
On Sun, Jan 14, 2018 at 11:27:13AM +0100, Peter Zijlstra wrote:
> The intel_bts driver does not use the 'normal' BTS buffer we allocated
> space for in the cpu_entry_area but instead uses the memory allocated
> for the perf AUX buffer.
> This obviously comes apart when using PTI because then the kernel
> mapping; which includes that AUX buffer memory; disappears.
> For now disable this driver when PTI is enabled, we'll try and sort
> something out later.
> Cc: Alexander Shishkin <>
> Reported-by: Vince Weaver <>
> Reported-by: Robert Święcki <>
> Signed-off-by: Peter Zijlstra (Intel) <>

Can you add a:
Cc: stable <>


greg k-h

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