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Message-ID: <20150717015134.GA9087@richard> Date: Fri, 17 Jul 2015 09:51:34 +0800 From: Wei Yang <weiyang@...ux.vnet.ibm.com> To: Yinghai Lu <yinghai@...nel.org> Cc: Bjorn Helgaas <bhelgaas@...gle.com>, David Miller <davem@...emloft.net>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>, Yijing Wang <wangyijing@...wei.com>, Andrew Morton <akpm@...ux-foundation.org>, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2 00/49] PCI: Resource allocation cleanup for v4.3 Yinghai, Tested your latest for for-pci-v4.3-next branch, it works fine on my P8 machine. BTW, the SRIOV works fine too. Previously failure is based on my mistake, I have disabled SRIOV :-( On Tue, Jul 14, 2015 at 03:46:31PM -0700, Yinghai Lu wrote: >Hi, > >After 5b28541552ef (PCI: Restrict 64-bit prefetchable bridge windows >to 64-bit resources), we have several reports on resource allocation >failure, and we try to fix the problem with resource clip, and get >more problems. > >One is realloc fail with two graphics cards above 4G. >One is from sparc that have problem with clip as we don't parse >mem64 for it. > >Other report is about pci remove/rescan does not work on some setup >when BIOS tend to allocate small bus size. > >This patchset enhance resource allocation to address those problems. >1. optimize bus mmio alignment calculation. >2. optimize bus mmio optional alignment calculation. >3. add support for alt size to prefer small bus size to small bus alignment. > when we have small resource window on parent bridges. >4. treat ROM bar as optional resource. >5. during allocation, will pick up just fit resource. >6. parse MEM64 for sparc and other system with OF. >7. treat non-pref mmio64 if parent bridges are all pcie. >8. restore old pref allocation logic if hostbridge does not support mmio64 really. >9. don't realloc resource if device firmware does not support bar change. >10. add pci=assign_pref_bars to clear and assign pref bars. >11. don't clear resource when allocation fails. > >I put latest copy at: > git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-pci-v4.3-next > >That is based on kind of v4.2-rc2. > >v2: > - fix resource_disabled allocation from powerpc > - other warnings that were found by Fengguang's build robot. > - io port alignment clean up. > - rebased to v4.2-rc2 > - better for two alt_size support. > >Thanks > >Yinghai > >Yinghai Lu (49): > PCI: Cleanup res_to_dev_res() printout for addon resources > PCI: Reuse res_to_dev_res in reassign_resources_sorted > PCI: Use correct align for optional only resources during sorting > PCI: Optimize bus align/size calculation during sizing > PCI: Optimize bus align/size calculation for optional during sizing > PCI: Don't add too much optional size for hotplug bridge mmio > PCI: Reorder resources list for must/optional resources > PCI: Remove duplicated code for resource sorting > PCI: Rename pdev_sort_resources to pdev_check_resources > PCI: Treat ROM resource as optional during realloc > PCI: Add debug printout during releasing partial assigned resources > PCI: Simplify res reference using in __assign_resourcs_sorted > PCI: Separate realloc list checking after allocation > PCI: Add __add_to_list() > PCI: Cache window alignment value > PCI: Check if resource is allocated before pci_assign > PCI: Separate out save_resources/restore_resource > PCI: Move comment to pci_need_to_release() > PCI: Separate must+optional assigning to another function > PCI: Skip must+optional if there is no optional addon > PCI: Move saved required resource list out of must+optional assigning > PCI: Add alt_size allocation support > PCI: Add support for more than two alt_size under same bridge > PCI: Better support for two alt_size > PCI: Don't add too much optional size for hotplug bridge io > PCI: Move ISA ioport align out of calculate_iosize > PCI: Unifiy calculate_size for io port and mmio > PCI: Allow optional only io resource must size to be 0 > PCI: Unify skip_ioresource_align() > PCI: Kill macro checking for bus io port sizing > resources: Split out __allocate_resource() > resources: Make allocate_resource return just fit resource > PCI: Check pref compatible bit for mem64 resource of pcie device > PCI: Only treat non-pef mmio64 as pref if all bridges has MEM_64 > PCI: Add has_mem64 for host_bridge > PCI: Only treat non-pef mmio64 as pref if host-bridge has_mem64 > PCI: Restore pref mmio allocation logic for hostbridge without mmio64 > sparc/PCI: Add mem64 resource parsing for root bus > sparc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in of parsing > powerpc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in of parsing > of/PCI: Add IORESOURCE_MEM_64 for 64-bit resource > PCI: Treat optional as must in first try for bridge rescan > PCI: Get new realloc size for bridge for last try > PCI: Don't release sibiling bridge resources during hotplug > PCI: Don't release fixed resource for realloc > PCI: Set resource to FIXED for lsi devices > PCI, x86: Add pci=assign_pref_bars to re-allocate pref bars > PCI: Introduce resource_disabled() > PCI: Don't set flags to 0 when assign resource fail > > arch/alpha/kernel/pci.c | 2 +- > arch/ia64/pci/pci.c | 4 +- > arch/microblaze/pci/pci-common.c | 23 +- > arch/mn10300/unit-asb2305/pci-asb2305.c | 4 +- > arch/mn10300/unit-asb2305/pci.c | 4 +- > arch/powerpc/kernel/pci-common.c | 27 +- > arch/powerpc/kernel/pci_of_scan.c | 4 +- > arch/powerpc/platforms/powernv/pci-ioda.c | 12 +- > arch/s390/pci/pci.c | 2 +- > arch/sparc/kernel/of_device_32.c | 5 +- > arch/sparc/kernel/of_device_64.c | 5 +- > arch/sparc/kernel/pci.c | 9 +- > arch/sparc/kernel/pci_common.c | 15 +- > arch/sparc/kernel/pci_impl.h | 1 + > arch/x86/include/asm/pci_x86.h | 2 +- > arch/x86/pci/common.c | 7 +- > arch/x86/pci/i386.c | 72 +- > arch/xtensa/kernel/pci.c | 4 +- > drivers/iommu/intel-iommu.c | 3 +- > drivers/of/address.c | 4 +- > drivers/pci/bus.c | 6 +- > drivers/pci/host/pcie-rcar.c | 2 +- > drivers/pci/hotplug/acpiphp_glue.c | 1 + > drivers/pci/iov.c | 2 +- > drivers/pci/pci.c | 3 +- > drivers/pci/pci.h | 4 + > drivers/pci/probe.c | 44 +- > drivers/pci/quirks.c | 20 + > drivers/pci/rom.c | 2 +- > drivers/pci/setup-bus.c | 1302 +++++++++++++++++++++-------- > drivers/pci/setup-res.c | 18 +- > include/asm-generic/pci-bridge.h | 2 + > include/linux/ioport.h | 6 +- > include/linux/pci.h | 2 + > kernel/resource.c | 175 +++- > 35 files changed, 1325 insertions(+), 473 deletions(-) > >-- >1.8.4.5 -- Richard Yang Help you, Help me -- 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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