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From: "Daniel P. Berrangé" <berrange@redhat.com>
To: Markus Armbruster <armbru@redhat.com>
Cc: qemu-devel@nongnu.org, xieyongji@bytedance.com, kwolf@redhat.com,
	hreitz@redhat.com, Coiby.Xu@gmail.com, pbonzini@redhat.com,
	eduardo@habkost.net, mark.cave-ayland@ilande.co.uk,
	michael.roth@amd.com, kkostiuk@redhat.com, qemu-block@nongnu.org
Subject: Re: [PATCH 4/7] target/i386/cpu: Avoid mixing signed and unsigned in property setters
Date: Thu, 10 Oct 2024 16:52:05 +0100	[thread overview]
Message-ID: <Zwf4JXYBs1iNV3Le@redhat.com> (raw)
In-Reply-To: <20241010145630.985335-5-armbru@redhat.com>

On Thu, Oct 10, 2024 at 04:56:27PM +0200, Markus Armbruster wrote:
> Properties "family", "model", and "stepping" are visited as signed
> integers.  They are backed by bits in CPUX86State member
> @cpuid_version.  The code to extract and insert these bits mixes
> signed and unsigned.  Not actually wrong, but avoiding such mixing is
> good practice.
> 
> Visit them as unsigned integers instead.
> 
> This adds a few mildly ugly cast in arguments of error_setg().  The
> next commit will get rid of them.
> 
> Property "tsc-frequency" is also visited as signed integer.  The value
> ultimately flows into the kernel, where it is 31 bits unsigned.  The
> QEMU code freely mixes int, uint32_t, int64_t.  I elect not to try
> draining this swamp today.
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  target/i386/cpu.c | 45 +++++++++++++++++++++------------------------
>  1 file changed, 21 insertions(+), 24 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


With regards,
Daniel
-- 
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  reply	other threads:[~2024-10-10 15:53 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-10 14:56 [PATCH 0/7] error: Eliminate QERR_PROPERTY_VALUE_OUT_OF_RANGE Markus Armbruster
2024-10-10 14:56 ` [PATCH 1/7] error: Drop superfluous #include "qapi/qmp/qerror.h" Markus Armbruster
2024-10-10 15:01   ` Daniel P. Berrangé
2024-10-10 14:56 ` [PATCH 2/7] block: Improve errors about block sizes Markus Armbruster
2024-10-10 15:05   ` Daniel P. Berrangé
2024-10-10 14:56 ` [PATCH 3/7] block: Adjust check_block_size() signature Markus Armbruster
2024-10-10 15:06   ` Daniel P. Berrangé
2024-10-10 14:56 ` [PATCH 4/7] target/i386/cpu: Avoid mixing signed and unsigned in property setters Markus Armbruster
2024-10-10 15:52   ` Daniel P. Berrangé [this message]
2024-10-10 14:56 ` [PATCH 5/7] target/i386/cpu: Improve errors for out of bounds property values Markus Armbruster
2024-10-10 15:56   ` Daniel P. Berrangé
2024-10-10 14:56 ` [PATCH 6/7] hw/intc/openpic: " Markus Armbruster
2024-10-10 15:56   ` Daniel P. Berrangé
2024-10-10 14:56 ` [PATCH 7/7] qerror: QERR_PROPERTY_VALUE_OUT_OF_RANGE is no longer used, drop Markus Armbruster
2024-10-10 15:57   ` Daniel P. Berrangé
2024-10-10 14:59 ` [PATCH 0/7] error: Eliminate QERR_PROPERTY_VALUE_OUT_OF_RANGE Markus Armbruster
2024-10-10 16:07   ` Daniel P. Berrangé
2024-10-10 17:03     ` Markus Armbruster

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