From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Jianfeng Tan <jianfeng.tan@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3] vhost: fix mmap failure as len not aligned with hugepage size
Date: Tue, 24 Nov 2015 19:24:40 +0100 [thread overview]
Message-ID: <111424458.gvWv4ThTcC@xps13> (raw)
In-Reply-To: <1447308361-82139-1-git-send-email-jianfeng.tan@intel.com>
2015-11-12 14:06, Jianfeng Tan:
> This patch fixes a bug under lower version linux kernel, mmap()
> fails when length is not aligned with hugepage size. mmap()
> without flag of MAP_ANONYMOUS, should be called with length
> argument aligned with hugepagesz at older longterm version
> Linux, like 2.6.32 and 3.2.72, or mmap() will fail with EINVAL.
> This bug was fixed in Linux kernel by commit:
> dab2d3dc45ae7343216635d981d43637e1cb7d45
> To avoid failure, make sure in caller to keep length aligned.
>
> v3 changes:
> - fix (u64) -> (void *) convert error on 32-bit system
>
> v2 changes:
> - add Kernel version comments and commit msg
> - remove unnecessary alignments when munmap
>
> Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
You forgot to keep Huawei's ack from v2.
Applied, thanks
next prev parent reply other threads:[~2015-11-24 18:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-11 22:04 [dpdk-dev] [PATCH v2] " Jianfeng Tan
2015-11-12 6:06 ` [dpdk-dev] [PATCH v3] " Jianfeng Tan
2015-11-24 18:24 ` Thomas Monjalon [this message]
2015-11-12 6:39 ` [dpdk-dev] [PATCH v2] " Xie, Huawei
2015-11-12 11:18 ` Thomas Monjalon
2015-11-12 12:51 ` Tan, Jianfeng
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