On Fri, Jan 26, 2018 at 04:05:24PM +, Suzuki K Poulose wrote:
> On 26/01/18 14:41, Dave Martin wrote:
> >On Tue, Jan 23, 2018 at 12:28:08PM +, Suzuki K Poulose wrote:
> >>We enable hardware DBM bit in a capable CPU, very early in the
> >>boot via __cpu_setup. This doesn't give us a flexibil
On 26/01/18 14:41, Dave Martin wrote:
On Tue, Jan 23, 2018 at 12:28:08PM +, Suzuki K Poulose wrote:
We enable hardware DBM bit in a capable CPU, very early in the
boot via __cpu_setup. This doesn't give us a flexibility of
optionally disable the feature, as the clearing the bit
is a bit cost
On Tue, Jan 23, 2018 at 12:28:08PM +, Suzuki K Poulose wrote:
> We enable hardware DBM bit in a capable CPU, very early in the
> boot via __cpu_setup. This doesn't give us a flexibility of
> optionally disable the feature, as the clearing the bit
> is a bit costly as the TLB can cache the setti
We enable hardware DBM bit in a capable CPU, very early in the
boot via __cpu_setup. This doesn't give us a flexibility of
optionally disable the feature, as the clearing the bit
is a bit costly as the TLB can cache the settings. Instead,
we delay enabling the feature until the CPU is brought up
in
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