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Date: Fri, 20 Apr 2007 18:30:25 +0530 From: Bhuvan Kumar MITTAL <bhuvan.mittal@...com> To: <linux-kernel@...r.kernel.org> Cc: <bhuvan.mittal@...com> Subject: How to make mmap'ed kernel buffer non-cacheable Hi, I am working on an audio device driver development on Linux. I have a kernel buffer which I have mapped to user space using mmap call from user space. My problem is that the data which comes to the kernel buffer is getting dropped in user space and I get only 50-60% of the data which is randomly ordered. The user to kernel level buffer address translation code is fine and I suspect this data dropping is occurring coz the kernel buffer is cacheable. Please suggest me some way of making the entire buffer non cacheable. I am stuck on this for quite a while now. Regards, Bhuvan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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