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Re: [PATCH] xen/mem_sharing: support forks with active vPMU state
- To: Tamas K Lengyel <tamas.lengyel@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 20 Jul 2022 10:24:20 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Jun Nakajima <jun.nakajima@xxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 20 Jul 2022 08:24:28 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.07.2022 19:18, Tamas K Lengyel wrote:
> --- a/xen/arch/x86/include/asm/vpmu.h
> +++ b/xen/arch/x86/include/asm/vpmu.h
> @@ -40,6 +40,7 @@
> /* Arch specific operations shared by all vpmus */
> struct arch_vpmu_ops {
> int (*initialise)(struct vcpu *v);
> + int (*allocate_context)(struct vcpu *v);
I think this hook would best be compiled out when !MEM_SHARING, even
more so when it can be left with NULL in it.
Jan
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