On Tue, Jul 22, 2025 at 08:29:07PM +0530, Naman Jain wrote:
On 7/22/2025 7:13 PM, Greg Kroah-Hartman wrote:
6.12-stable review patch. If anyone has any objections, please let me know.
From: Naman Jain namjain@linux.microsoft.com
commit a4131a50d072b369bfed0b41e741c41fd8048641 upstream.
Size of ring buffer, as defined in uio_hv_generic driver, is no longer fixed to 16 KB. This creates a problem in fcopy, since this size was hardcoded. With the change in place to make ring sysfs node actually reflect the size of underlying ring buffer, it is safe to get the size of ring sysfs file and use it for ring buffer size in fcopy daemon. Fix the issue of disparity in ring buffer size, by making it dynamic in fcopy uio daemon.
Cc: stable@vger.kernel.org Fixes: 0315fef2aff9 ("uio_hv_generic: Align ring size to system page") Signed-off-by: Naman Jain namjain@linux.microsoft.com Reviewed-by: Saurabh Sengar ssengar@linux.microsoft.com Reviewed-by: Long Li longli@microsoft.com Link: https://lore.kernel.org/r/20250711060846.9168-1-namjain@linux.microsoft.com Signed-off-by: Wei Liu wei.liu@kernel.org Message-ID: 20250711060846.9168-1-namjain@linux.microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
Hello Greg, Please don't pick this change yet. I have shared the reason in the other thread: "Re: Patch "tools/hv: fcopy: Fix irregularities with size of ring buffer" has been added to the 6.12-stable tree"
Ok, I have dropped this from the 6.12.y tree now.
thanks,
greg k-h