Re: [patch] x86: Fix incorrect __read_mostly on _boot_cpu_pda

[Ingo Molnar]

* Ravikiran G Thirumalai <kiran@xxxxxxxxxxxx> wrote:

> The pda rework (commit 3461b0af025251bbc6b3d56c821c6ac2de6f7209)
> to remove static boot cpu pdas introduced a bug.  _boot_cpu_pda is the
> actual pda used by the boot cpu and is definitely not "__read_mostly" and
> ended up polluting the read mostly section with writes.  This bug caused
> regression of about 8-10% on certain syscall intensive workloads.
> 
> Signed-off-by: Ravikiran Thirumalai <kiran@xxxxxxxxxxxx>

applied to tip/x86/urgent, with a Cc: stable tag. Thanks,

	Ingo
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