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Re: [PATCH v13 1/3] xen/mem_sharing: VM forking
- To: Tamas K Lengyel <tamas.lengyel@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Julien Grall <julien@xxxxxxx>
- Date: Tue, 31 Mar 2020 11:09:52 +0100
- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Tue, 31 Mar 2020 10:10:04 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
On 30/03/2020 16:02, Tamas K Lengyel wrote:
VM forking is the process of creating a domain with an empty memory space and a
parent domain specified from which to populate the memory when necessary. For
the new domain to be functional the VM state is copied over as part of the fork
operation (HVM params, hap allocation, etc).
Signed-off-by: Tamas K Lengyel <tamas.lengyel@xxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
v13: Address issues pointed out by Roger & Jan
Introduce & use PAGE_OFFSET to calculate vcpu_info offset
---
xen/arch/x86/domain.c | 13 ++
xen/arch/x86/hvm/hvm.c | 4 +-
xen/arch/x86/mm/hap/hap.c | 3 +-
xen/arch/x86/mm/mem_sharing.c | 351 ++++++++++++++++++++++++++++++
xen/arch/x86/mm/p2m.c | 9 +-
xen/include/asm-arm/page.h | 1 +
For the Arm change:
Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
Cheers,
--
Julien Grall
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