On Monday, September 12, 2016 02:04:29 PM Marc Zyngier wrote: > On 12/09/16 13:37, Tomasz Nowicki wrote: > > Hi Rafael, > > > > On 09.09.2016 11:20, Lorenzo Pieralisi wrote: > >> Hi Rafael, > >> > >> On Wed, Sep 07, 2016 at 01:56:52PM +0200, Tomasz Nowicki wrote: > >>> IORT shows representation of IO topology for ARM based systems. > >>> It describes how various components are connected together on > >>> parent-child basis e.g. PCI RC -> SMMU -> ITS. Also see IORT spec. > >>> http://infocenter.arm.com/help/topic/com.arm.doc.den0049b/DEN0049B_IO_Remapping_Table.pdf > >>> > >>> Initial support allows to detect IORT table presence and save its > >>> root pointer obtained through acpi_get_table(). The pointer validity > >>> depends on acpi_gbl_permanent_mmap because if acpi_gbl_permanent_mmap > >>> is not set while using IORT nodes we would dereference unmapped pointers. > >>> > >>> For the aforementioned reason call iort_table_detect() from acpi_init() > >>> which guarantees acpi_gbl_permanent_mmap to be set at that point. > >>> > >>> Add generic helpers which are helpful for scanning and retrieving > >>> information from IORT table content. List of the most important helpers: > >>> - iort_find_dev_node() finds IORT node for a given device > >>> - iort_node_map_rid() maps device RID and returns IORT node which provides > >>> final translation > >>> > >>> IORT support is placed under drivers/acpi/arm64/ new directory due to its > >>> ARM64 specific nature. The code there is considered only for ARM64. > >>> The long term plan is to keep all ARM64 specific tables support > >>> in this place e.g. GTDT table. > >>> > >>> Signed-off-by: Tomasz Nowicki <tn@xxxxxxxxxxxx> > >>> Reviewed-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> > >>> Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> > >>> --- > >> > >> Apart from the minor commit logs oversights we consider these two > >> patches ready to go, please let us know if there is something you want > >> changed since we are at risk of missing yet another merge window. > >> > >> It is ARM64 specific code, we created and moved the code to its > >> ARM64 specific directory and we are happy to maintain it as such, > >> we need your ACK to get this done so if there is something you > >> want changed please let us know otherwise I would ask your ACK > >> on these two patches to give Marc a go-ahead for -next and > >> hopefully 4.9. > > > > Kindly reminder. Is there anything we need to do more about these > > patches? Please let us know. Note this is the major thing for incoming > > IORT more advance feature. > > May I convey a slight sense of urgency here? I'd like to cut the irqchip > branch for 4.9 pretty soon (this week), in order to let it sink in -next > for a few days at the very least. > > It'd be a bit disappointing if these patches missed the boat this time > again. Both [1-2/8] are fine by me. Please feel free to add my ACKs to those when you apply them. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
