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Re: [Xen-devel] [PATCH 1/2] domain: introduce alloc/free_shared_info() helpers...
- To: Paul Durrant <pdurrant@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Julien Grall <julien@xxxxxxx>
- Date: Wed, 26 Feb 2020 08:03:57 +0000
- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Wed, 26 Feb 2020 08:04:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
On 25/02/2020 09:53, Paul Durrant wrote:
... and save the MFN.
This patch modifies the 'shared_info' field of struct domain to be
a structure comprising an MFN and a virtual address. Allocations are
still done from xenheap, so the virtual address still equates to
virt_to_mfn() called on the MFN but subsequent patch will change this.
Hence the need to save the MFN.
NOTE: Whist defining the new helpers, virt_to_mfn() in common/domain.c
is made type safe.
The definition of nmi_reason() in asm-x86/shared.h is also re-
flowed to avoid overly long lines.
Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>
Cheers,
--
Julien Grall
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