From: Wei Liu <wl@xen.org>
To: Jan Beulich <jbeulich@suse.com>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
"Ian Jackson" <Ian.Jackson@citrix.com>,
"Roger Pau Monné" <roger.pau@citrix.com>, "Wei Liu" <wl@xen.org>,
Xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [Xen-devel] [PATCH v2 08/10] tools/libxc: Rework xc_cpuid_apply_policy() to use {get, set}_cpu_policy()
Date: Mon, 16 Sep 2019 14:41:13 +0100 [thread overview]
Message-ID: <CAK9nU=r=pH+x6HLaKkJo1RLrES0WGyVabic_O6Kvu0LTo9riGg@mail.gmail.com> (raw)
In-Reply-To: <a48bd401-32e1-0b7e-4c0b-3509630652ce@suse.com>
On Mon, 16 Sep 2019 at 12:17, Jan Beulich <jbeulich@suse.com> wrote:
>
> On 13.09.2019 21:27, Andrew Cooper wrote:
> > -static void intel_xc_cpuid_policy(const struct cpuid_domain_info *info,
> > - const unsigned int *input, unsigned int *regs)
> > -{
> > - switch ( input[0] )
> > - {
> > - case 0x00000004:
> > - /*
> > - * EAX[31:26] is Maximum Cores Per Package (minus one).
> > - * Update to reflect vLAPIC_ID = vCPU_ID * 2.
> > - */
> > - regs[0] = (((regs[0] & 0x7c000000u) << 1) | 0x04000000u |
> > - (regs[0] & 0x3ffu));
> > - regs[3] &= 0x3ffu;
>
> I think you want to mention that the removal of this masking is
> intentional, for it looking bogus. With an appropriate addition to
> the description
> Reviewed-by: Jan Beulich <jbeulich@suse.com>
>
Acked-by: Wei Liu <wl@xen.org>
> Jan
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next prev parent reply other threads:[~2019-09-16 13:41 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-13 19:27 [Xen-devel] [PATCH v2 00/10] x86/cpuid: Switch to using XEN_DOMCTL_set_cpumsr_policy Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 01/10] x86/msr: Offer CPUID Faulting to PVH control domains Andrew Cooper
2019-09-16 10:53 ` Jan Beulich
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 02/10] libx86: Proactively initialise error pointers Andrew Cooper
[not found] ` <527f33ad-3de1-15c7-eb4b-603eaf65f3c5@suse.com>
[not found] ` <65f18521-15c5-72a9-29f6-cd5d621e1283@citrix.com>
2019-09-16 15:46 ` Jan Beulich
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 03/10] libx86: Introduce x86_cpu_policies_are_compatible() Andrew Cooper
2019-09-16 10:59 ` Jan Beulich
2019-09-16 15:31 ` Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 04/10] x86/cpuid: Split update_domain_cpuid_info() in half Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 05/10] x86/domctl: Implement XEN_DOMCTL_set_cpumsr_policy Andrew Cooper
2019-09-16 11:04 ` Jan Beulich
2019-09-16 15:40 ` Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 06/10] tools/libxc: Pre-cleanup for xc_cpuid_{set, apply_policy}() Andrew Cooper
2019-09-16 11:09 ` Jan Beulich
2019-09-16 15:42 ` Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 07/10] tools/libxc: Rework xc_cpuid_set() to use {get, set}_cpu_policy() Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 08/10] tools/libxc: Rework xc_cpuid_apply_policy() " Andrew Cooper
2019-09-16 11:17 ` Jan Beulich
2019-09-16 13:41 ` Wei Liu [this message]
2019-09-16 15:49 ` Andrew Cooper
2019-09-16 16:05 ` Jan Beulich
2019-09-18 16:09 ` Jan Beulich
2019-09-19 8:48 ` Andrew Cooper
2019-09-25 18:11 ` [Xen-devel] [PATCH v3 " Andrew Cooper
2019-09-26 8:04 ` Jan Beulich
2019-09-26 12:25 ` Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 09/10] x86/domctl: Drop XEN_DOMCTL_set_cpuid Andrew Cooper
2019-09-13 19:27 ` [Xen-devel] [PATCH v2 10/10] x86/cpuid: Enable CPUID Faulting for PV control domains by default Andrew Cooper
2019-09-16 11:22 ` Jan Beulich
2019-09-16 15:52 ` Andrew Cooper
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