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Re: [Qemu-devel] [PATCH 1/3] net/vmxnet3: return 1 on device activation


From: P J P
Subject: Re: [Qemu-devel] [PATCH 1/3] net/vmxnet3: return 1 on device activation failure
Date: Tue, 22 Dec 2015 14:36:22 +0530 (IST)

+-- On Tue, 22 Dec 2015, Miao Yan wrote --+
| > If '1' indicates the error, the 'default:' case in the same switch needs to 
be
| > updated too.
| 
| '1' indicates an error on device activation. Not sure about the 'unknown 
| command' case.

  Ideally it should be same, inconsistent return codes wouldn't be helpful.
 
| Linux driver uses VXMNET3_READ_BAR1_REG() which calls readl().
| That should be an indication that the driver expects 32bit values.

  Right.

| But the prototype in MemoryRegionOps requires uint64_t.

  That is odd. It does not seem right to use uint64_t for 32bit values, and 
then return a negative(-1) value.


@Dmitry...?
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F



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