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Re: [PATCH 4/5] types: replace remaining uses of s32
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 29 Aug 2024 15:01:50 +0200
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- Cc: Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Marek Marczykowski <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, Daniel Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 29 Aug 2024 13:01:56 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 29.08.2024 14:44, Andrew Cooper wrote:
> On 29/08/2024 1:01 pm, Jan Beulich wrote:
>> ... and move the type itself to linux-compat.h.
>>
>> While doing so switch a few adjacent types as well, for (a little bit
>> of) consistency.
>>
>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
>
> Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>,
Thanks.
> with a minor formatting request.
>
>> --- a/xen/arch/arm/arm32/livepatch.c
>> +++ b/xen/arch/arm/arm32/livepatch.c
>> @@ -41,11 +41,11 @@ void arch_livepatch_apply(const struct l
>> * ARM DDI 0406C.c, see A2.3 (pg 45) and A8.8.18 pg (pg 334,335)
>> *
>> */
>> - delta = (s32)func->new_addr - (s32)(func->old_addr + 8);
>> + delta = (int32_t)func->new_addr - (int32_t)(func->old_addr + 8);
>>
>> /* The arch_livepatch_symbol_ok should have caught it. */
>> - ASSERT(delta >= -(s32)ARCH_LIVEPATCH_RANGE ||
>> - delta < (s32)ARCH_LIVEPATCH_RANGE);
>> + ASSERT(delta >= -(int32_t)ARCH_LIVEPATCH_RANGE ||
>> + delta < (int32_t)ARCH_LIVEPATCH_RANGE);
>
> Could you vertically like this, like it is ...
>
>> @@ -203,8 +204,8 @@ static int perform_rel(unsigned char typ
>> * arch_livepatch_verify_distance can't account of addend so we have
>> * to do the check here as well.
>> */
>> - if ( (s32)val < -(s32)ARCH_LIVEPATCH_RANGE ||
>> - (s32)val >= (s32)ARCH_LIVEPATCH_RANGE )
>> + if ( (int32_t)val < -(int32_t)ARCH_LIVEPATCH_RANGE ||
>> + (int32_t)val >= (int32_t)ARCH_LIVEPATCH_RANGE )
>> return -EOVERFLOW;
>
> ... here?
If the Arm folks don't mind - sure, I can. I think though that the latter
only happens to look aligned, without there having been such an intention.
Kind of supported ...
> I'd argue that even this one wants one extra space in the middle, so the
> '-' is further to the right of the >=.
... by this observation of yours.
Jan
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