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Re: [PATCH v2 3/4] utils: Deprecate hex-with-suffix sizes

From: Philippe Mathieu-Daudé
Subject: Re: [PATCH v2 3/4] utils: Deprecate hex-with-suffix sizes
Date: Thu, 11 Feb 2021 23:59:16 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0

On 2/11/21 9:44 PM, Eric Blake wrote:
> Supporting '0x20M' looks odd, particularly since we have a 'B' suffix
> that is ambiguous for bytes, as well as a less-frequently-used 'E'
> suffix for extremely large exibytes.  In practice, people using hex
> inputs are specifying values in bytes (and would have written
> 0x2000000, or possibly relied on default_suffix in the case of
> qemu_strtosz_MiB), and the use of scaling suffixes makes the most
> sense for inputs in decimal (where the user would write 32M).  But
> rather than outright dropping support for hex-with-suffix, let's
> follow our deprecation policy.  Sadly, since qemu_strtosz() does not
> have an Err** parameter, and plumbing that in would be a much larger
> task, we instead go with just directly emitting the deprecation
> warning to stderr.
> Signed-off-by: Eric Blake <eblake@redhat.com>
> ---
>  docs/system/deprecated.rst |  8 ++++++++
>  util/cutils.c              | 10 +++++++++-
>  2 files changed, 17 insertions(+), 1 deletion(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

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