Re: [Xen-devel] [PATCH] time: widen wallclock seconds to 64 bits

[Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>]

On 01/29/2015 10:39 AM, Jan Beulich wrote:
> Linux is in the process of converting their seconds representation to
> 64 bits, so in order to support it consistently we should follow suit
> (which at some point in quite a few years we'd have to do anyway). To
> represent this in struct shared_info we leverage a 32-bit hole in
> x86-64's and arm's variant of the structure; for x86-32 guests the only
> (reasonable) choice we have is to put the extension in struct
> arch_shared_info.
>
> A note on the conditional suppressing the xen_wc_sec_hi helper macro
> definition in the ix86 case for hypervisor and tools: Neither of the
> two actually need this, and its presence causes the tools to fail to
> build (due to the inclusion of both the x86-64 and x86-32 variants of
> the header).
>
> As a secondary change, x86's do_platform_op() gets a pointless
> initializer as well as a pointless assignment of that same variable
> dropped.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>

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