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From: Zhenzhong Duan <zhenzhong.duan@oracle.com>
To: linux-kernel@vger.kernel.org
Cc: vkuznets@redhat.com, linux-hyperv@vger.kernel.org,
	kvm@vger.kernel.org, Zhenzhong Duan <zhenzhong.duan@oracle.com>
Subject: [PATCH v3 0/4] Add a unified parameter "nopvspin"
Date: Mon, 30 Sep 2019 20:44:35 +0800	[thread overview]
Message-ID: <1569847479-13201-1-git-send-email-zhenzhong.duan@oracle.com> (raw)

There are cases folks want to disable spinlock optimization for
debug/test purpose. Xen and hyperv already have parameters "xen_nopvspin"
and "hv_nopvspin" to support that, but kvm doesn't.

The first patch adds that feature to KVM guest with "nopvspin".

For compatibility reason original parameters "xen_nopvspin" and
"hv_nopvspin" are retained and marked obsolete.

v3:
PATCH2: Fix indentation

v2:
PATCH1: pick the print code change into separate PATCH2,
        updated patch description             [Vitaly Kuznetsov]
PATCH2: new patch with print code change      [Vitaly Kuznetsov]
PATCH3: add Reviewed-by                       [Juergen Gross]

Thanks
Zhenzhong

             reply	other threads:[~2019-10-01 12:40 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-30 12:44 Zhenzhong Duan [this message]
2019-09-30 12:44 ` [PATCH v3 1/4] x86/kvm: Add "nopvspin" parameter to disable PV spinlocks Zhenzhong Duan
2019-10-02 17:10   ` Sean Christopherson
2019-10-03 10:30     ` Zhenzhong Duan
2019-09-30 12:44 ` [PATCH v3 2/4] x86/kvm: Change print code to use pr_*() format Zhenzhong Duan
2019-10-02 17:15   ` Sean Christopherson
2019-10-03 10:32     ` Zhenzhong Duan
2019-09-30 12:44 ` [PATCH v3 3/4] xen: Mark "xen_nopvspin" parameter obsolete and map it to "nopvspin" Zhenzhong Duan
2019-10-02 17:18   ` Sean Christopherson
2019-10-03 11:21     ` Zhenzhong Duan
2019-09-30 12:44 ` [PATCH v3 4/4] x86/hyperv: Mark "hv_nopvspin" " Zhenzhong Duan
2019-10-02 17:19   ` Sean Christopherson
2019-10-03 11:22     ` Zhenzhong Duan

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