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From: Fabiano Rosas <farosas@linux.ibm.com>
To: Nicholas Piggin <npiggin@gmail.com>, linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [PATCH] KVM: PPC: Book3S HV P9: Optimise loads around context switch
Date: Mon, 24 Jan 2022 14:29:45 -0300	[thread overview]
Message-ID: <87sftddoty.fsf@linux.ibm.com> (raw)
In-Reply-To: <20220123114725.3549202-1-npiggin@gmail.com>

Nicholas Piggin <npiggin@gmail.com> writes:

> It is better to get all loads for the register values in flight
> before starting to switch LPID, PID, and LPCR because those
> mtSPRs are expensive and serialising.
>
> This also just tidies up the code for a potential future change
> to the context switching sequence.
>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>

  reply	other threads:[~2022-01-24 17:30 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-23 11:47 [PATCH] KVM: PPC: Book3S HV P9: Optimise loads around context switch Nicholas Piggin
2022-01-24 17:29 ` Fabiano Rosas [this message]
2022-05-24 10:51 ` Michael Ellerman

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