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Re: [Xen-devel] [PATCH v2] x86/paravirt: Don't make vcpu_is_preempted() a callee-save function
- To: Waiman Long <longman@xxxxxxxxxx>
- From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- Date: Tue, 14 Feb 2017 10:39:46 +0100
- Cc: linux-arch@xxxxxxxxxxxxxxx, Juergen Gross <jgross@xxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>, x86@xxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, Radim Krčmář <rkrcmar@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Pan Xinhui <xinhui.pan@xxxxxxxxxxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, Chris Wright <chrisw@xxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Alok Kataria <akataria@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- Delivery-date: Tue, 14 Feb 2017 09:40:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On Mon, Feb 13, 2017 at 05:34:01PM -0500, Waiman Long wrote:
> It is the address of &steal_time that will exceed the 32-bit limit.
That seems extremely unlikely. That would mean we have more than 4G
worth of per-cpu variables declared in the kernel.
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