From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx> Date: Wed, 21 Dec 2016 13:43:38 -0500 > Check if the PCI memory starting address is disabled and return -EINVAL. > This will have minimal impact to performance as it is only during the > set up of the mmap and will avoid consequences of a failed load/store. > > Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> Some X server or similar userland application may be depending upon the current behavior. I'd rather not check, and let the user take the SIGBUS if it tries to access it. Furthermore, the user can legitimately map a disabled BAR then enable it with PCI config accesses. So I'm not applying this, sorry. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
