From: Jan Beulich <jbeulich@suse.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: "Roger Pau Monné" <roger.pau@citrix.com>, "Wei Liu" <wl@xen.org>,
Xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH v2] x86/shim: Simplify compat handling in write_start_info()
Date: Wed, 21 Apr 2021 11:29:55 +0200 [thread overview]
Message-ID: <7115a38d-6069-a0ad-e8da-eb926db3acde@suse.com> (raw)
In-Reply-To: <20210420174118.2731-1-andrew.cooper3@citrix.com>
On 20.04.2021 19:41, Andrew Cooper wrote:
> Factor out a compat boolean to remove the lfence overhead from multiple
> is_pv_32bit_domain() calls.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
> ---
> CC: Jan Beulich <JBeulich@suse.com>
> CC: Roger Pau Monné <roger.pau@citrix.com>
> CC: Wei Liu <wl@xen.org>
>
> v2:
> * Reinstate the conditional for the start info pointer, in case Intel/AMD
> can't be persuaded to adjust the architectural guarentees for upper bits in
> compatibility mode transitions.
As indicated before, with this adjustment
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Jan
prev parent reply other threads:[~2021-04-21 9:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-20 17:41 [PATCH v2] x86/shim: Simplify compat handling in write_start_info() Andrew Cooper
2021-04-21 9:29 ` Jan Beulich [this message]
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