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* iommu/vt-d: Add 256-bit invalidation descriptor supportLu Baolu2018-12-111-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Intel vt-d spec rev3.0 requires software to use 256-bit descriptors in invalidation queue. As the spec reads in section 6.5.2: Remapping hardware supporting Scalable Mode Translations (ECAP_REG.SMTS=1) allow software to additionally program the width of the descriptors (128-bits or 256-bits) that will be written into the Queue. Software should setup the Invalidation Queue for 256-bit descriptors before progra- mming remapping hardware for scalable-mode translation as 128-bit descriptors are treated as invalid descriptors (see Table 21 in Section 6.5.2.10) in scalable-mode. This patch adds 256-bit invalidation descriptor support if the hardware presents scalable mode capability. Cc: Ashok Raj <ashok.raj@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Sanjay Kumar <sanjay.k.kumar@intel.com> Signed-off-by: Liu Yi L <yi.l.liu@intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/vt-d: Relocate struct/function declarations to its header filesSohil Mehta2018-09-251-1/+1
| | | | | | | | | | | | | | To reuse the static functions and the struct declarations, move them to corresponding header files and export the needed functions. Cc: Lu Baolu <baolu.lu@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Ashok Raj <ashok.raj@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Signed-off-by: Sohil Mehta <sohil.mehta@intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* irq_remapping: Use apic_ack_irq()Thomas Gleixner2018-06-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | To address the EBUSY fail of interrupt affinity settings in case that the previous setting has not been cleaned up yet, use the new apic_ack_irq() function instead of the special ir_ack_apic_edge() implementation which is merily a wrapper around ack_APIC_irq(). Preparatory change for the real fix Fixes: dccfe3147b42 ("x86/vector: Simplify vector move cleanup") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Song Liu <songliubraving@fb.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <liu.song.a23@gmail.com> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: stable@vger.kernel.org Cc: Mike Travis <mike.travis@hpe.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Tariq Toukan <tariqt@mellanox.com> Link: https://lkml.kernel.org/r/20180604162224.555716895@linutronix.de
* iommu/vt-d: Fix usage of force parameter in intel_ir_reconfigure_irte()Jagannathan Raman2018-05-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was noticed that the IRTE configured for guest OS kernel was over-written while the guest was running. As a result, vt-d Posted Interrupts configured for the guest are not being delivered directly, and instead bounces off the host. Every interrupt delivery takes a VM Exit. It was noticed that the following stack is doing the over-write: [ 147.463177] modify_irte+0x171/0x1f0 [ 147.463405] intel_ir_set_affinity+0x5c/0x80 [ 147.463641] msi_domain_set_affinity+0x32/0x90 [ 147.463881] irq_do_set_affinity+0x37/0xd0 [ 147.464125] irq_set_affinity_locked+0x9d/0xb0 [ 147.464374] __irq_set_affinity+0x42/0x70 [ 147.464627] write_irq_affinity.isra.5+0xe1/0x110 [ 147.464895] proc_reg_write+0x38/0x70 [ 147.465150] __vfs_write+0x36/0x180 [ 147.465408] ? handle_mm_fault+0xdf/0x200 [ 147.465671] ? _cond_resched+0x15/0x30 [ 147.465936] vfs_write+0xad/0x1a0 [ 147.466204] SyS_write+0x52/0xc0 [ 147.466472] do_syscall_64+0x74/0x1a0 [ 147.466744] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 reversing the sense of force check in intel_ir_reconfigure_irte() restores proper posted interrupt functionality Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Fixes: d491bdff888e ('iommu/vt-d: Reevaluate vector configuration on activate()') Signed-off-by: Joerg Roedel <jroedel@suse.de>
* genirq/irqdomain: Rename early argument of irq_domain_activate_irq()Thomas Gleixner2017-12-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'early' argument of irq_domain_activate_irq() is actually used to denote reservation mode. To avoid confusion, rename it before abuse happens. No functional change. Fixes: 72491643469a ("genirq/irqdomain: Update irq_domain_ops.activate() signature") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexandru Chirvasitu <achirvasub@gmail.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Mikael Pettersson <mikpelinux@gmail.com> Cc: Josh Poulson <jopoulso@microsoft.com> Cc: Mihai Costache <v-micos@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-pci@vger.kernel.org Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Simon Xiao <sixiao@microsoft.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Jork Loeser <Jork.Loeser@microsoft.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: devel@linuxdriverproject.org Cc: KY Srinivasan <kys@microsoft.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Sakari Ailus <sakari.ailus@intel.com>, Cc: linux-media@vger.kernel.org
* Merge branch 'linus' into x86/apic, to resolve conflictsIngo Molnar2017-11-071-0/+1
|\ | | | | | | | | | | | | Conflicts: arch/x86/include/asm/x2apic.h Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | iommu/vt-d: Reevaluate vector configuration on activate()Thomas Gleixner2017-09-251-17/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the upcoming reservation/management scheme, early activation will assign a special vector. The final activation at request_irq() assigns a real vector, which needs to be updated in the tables. Split out the reconfiguration code in set_affinity and use it for reactivation. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Yu Chen <yu.c.chen@intel.com> Acked-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: iommu@lists.linux-foundation.org Cc: Borislav Petkov <bp@alien8.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rui Zhang <rui.zhang@intel.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Len Brown <lenb@kernel.org> Link: https://lkml.kernel.org/r/20170913213155.853028808@linutronix.de
* | genirq/irqdomain: Update irq_domain_ops.activate() signatureThomas Gleixner2017-09-251-2/+3
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The irq_domain_ops.activate() callback has no return value and no way to tell the function that the activation is early. The upcoming changes to support a reservation scheme which allows to assign interrupt vectors on x86 only when the interrupt is actually requested requires: - A return value, so activation can fail at request_irq() time - Information that the activate invocation is early, i.e. before request_irq(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Yu Chen <yu.c.chen@intel.com> Acked-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rui Zhang <rui.zhang@intel.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Len Brown <lenb@kernel.org> Link: https://lkml.kernel.org/r/20170913213152.848490816@linutronix.de
* Merge tag 'iommu-updates-v4.13' of ↵Linus Torvalds2017-07-121-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: "This update comes with: - Support for lockless operation in the ARM io-pgtable code. This is an important step to solve the scalability problems in the common dma-iommu code for ARM - Some Errata workarounds for ARM SMMU implemenations - Rewrite of the deferred IO/TLB flush code in the AMD IOMMU driver. The code suffered from very high flush rates, with the new implementation the flush rate is down to ~1% of what it was before - Support for amd_iommu=off when booting with kexec. The problem here was that the IOMMU driver bailed out early without disabling the iommu hardware, if it was enabled in the old kernel - The Rockchip IOMMU driver is now available on ARM64 - Align the return value of the iommu_ops->device_group call-backs to not miss error values - Preempt-disable optimizations in the Intel VT-d and common IOVA code to help Linux-RT - Various other small cleanups and fixes" * tag 'iommu-updates-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (60 commits) iommu/vt-d: Constify intel_dma_ops iommu: Warn once when device_group callback returns NULL iommu/omap: Return ERR_PTR in device_group call-back iommu: Return ERR_PTR() values from device_group call-backs iommu/s390: Use iommu_group_get_for_dev() in s390_iommu_add_device() iommu/vt-d: Don't disable preemption while accessing deferred_flush() iommu/iova: Don't disable preempt around this_cpu_ptr() iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #126 iommu/arm-smmu-v3: Enable ACPI based HiSilicon CMD_PREFETCH quirk(erratum 161010701) iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74 ACPI/IORT: Fixup SMMUv3 resource size for Cavium ThunderX2 SMMUv3 model iommu/arm-smmu-v3, acpi: Add temporary Cavium SMMU-V3 IORT model number definitions iommu/io-pgtable-arm: Use dma_wmb() instead of wmb() when publishing table iommu/io-pgtable: depend on !GENERIC_ATOMIC64 when using COMPILE_TEST with LPAE iommu/arm-smmu-v3: Remove io-pgtable spinlock iommu/arm-smmu: Remove io-pgtable spinlock iommu/io-pgtable-arm-v7s: Support lockless operation iommu/io-pgtable-arm: Support lockless operation iommu/io-pgtable: Introduce explicit coherency iommu/io-pgtable-arm-v7s: Refactor split_blk_unmap ...
| * iommu/vt-d: Constify irq_domain_opsTobias Klauser2017-05-301-2/+2
| | | | | | | | | | | | | | struct irq_domain_ops is not modified, so it can be made const. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* | iommu/vt-d: Use named irq domain interfaceThomas Gleixner2017-06-221-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Joerg Roedel <joro@8bytes.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Keith Busch <keith.busch@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: iommu@lists.linux-foundation.org Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20170619235444.063083997@linutronix.de
* | iommu/vt-d: Add name to irq chipThomas Gleixner2017-06-221-4/+5
|/ | | | | | | | | | | | | | | Add the missing name, so debugging will work proper. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Joerg Roedel <joro@8bytes.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Keith Busch <keith.busch@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: iommu@lists.linux-foundation.org Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20170619235443.431939968@linutronix.de
* iommu/vt-d: Don't print the failure message when booting non-kdump kernelQiuxu Zhuo2017-04-281-9/+6
| | | | | | | | | | | | | | | | | | | | | When booting a new non-kdump kernel, we have below failure message: [ 0.004000] DMAR-IR: IRQ remapping was enabled on dmar2 but we are not in kdump mode [ 0.004000] DMAR-IR: Failed to copy IR table for dmar2 from previous kernel [ 0.004000] DMAR-IR: IRQ remapping was enabled on dmar1 but we are not in kdump mode [ 0.004000] DMAR-IR: Failed to copy IR table for dmar1 from previous kernel [ 0.004000] DMAR-IR: IRQ remapping was enabled on dmar0 but we are not in kdump mode [ 0.004000] DMAR-IR: Failed to copy IR table for dmar0 from previous kernel [ 0.004000] DMAR-IR: IRQ remapping was enabled on dmar3 but we are not in kdump mode [ 0.004000] DMAR-IR: Failed to copy IR table for dmar3 from previous kernel For non-kdump case, we no need to copy IR table from previous kernel so it's nonthing actually failed. To be less alarming or misleading, do not print "DMAR-IR: Failed to copy IR table for dmar[0-9] from previous kernel" messages when booting non-kdump kernel. Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* Merge tag 'for-linus-20160216' of git://git.infradead.org/intel-iommuLinus Torvalds2016-02-161-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | Pull IOMMU SVM fixes from David Woodhouse: "Minor register size and interrupt acknowledgement fixes which only showed up in testing on newer hardware, but mostly a fix to the MM refcount handling to prevent a recursive refcount issue when mmap() is used on the file descriptor associated with a bound PASID" * tag 'for-linus-20160216' of git://git.infradead.org/intel-iommu: iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG iommu/vt-d: Fix mm refcounting to hold mm_count not mm_users
| * iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REGCQ Tang2016-01-131-1/+1
| | | | | | | | | | | | | | | | | | This is a 32-bit register. Apparently harmless on real hardware, but causing justified warnings in simulation. Signed-off-by: CQ Tang <cq.tang@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@vger.kernel.org
* | x86/cpufeature: Remove unused and seldomly used cpu_has_xx macrosBorislav Petkov2015-12-191-1/+1
|/ | | | | | | | | | | | | | | | | | Those are stupid and code should use static_cpu_has_safe() or boot_cpu_has() instead. Kill the least used and unused ones. The remaining ones need more careful inspection before a conversion can happen. On the TODO. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1449481182-27541-4-git-send-email-bp@alien8.de Cc: David Sterba <dsterba@suse.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Matt Mackall <mpm@selenic.com> Cc: Chris Mason <clm@fb.com> Cc: Josef Bacik <jbacik@fb.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* iommu/vt-d: Fix return value check of parse_ioapics_under_ir()Joerg Roedel2015-11-021-1/+1
| | | | | | | The function returns 0 on success, so check for the right value. Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/vt-d: Propagate error-value from ir_parse_ioapic_hpet_scope()Joerg Roedel2015-10-231-6/+11
| | | | | | | Propagate the error-value from the function ir_parse_ioapic_hpet_scope() in parse_ioapics_under_ir() and cleanup its calling loop. Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/vt-d: Adjust the return value of the parse_ioapics_under_irBaoquan He2015-10-231-3/+3
| | | | | | | | | | | Adjust the return value of parse_ioapics_under_ir as negative value representing failure and "0" representing succcess. Just make it consistent with other function implementations, and we can judge if calling is successfull by if (!parse_ioapics_under_ir()) style. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/vt-d: Use cmpxchg16b to update posted format IRTE atomicallyFeng Wu2015-10-151-3/+30
| | | | | | | | | | If IRTE is in posted format, the 'pda' field goes across the 64-bit boundary, we need use cmpxchg16b to atomically update it. We only expose posted-interrupt when X86_FEATURE_CX16 is supported and use to update it atomically. Signed-off-by: Feng Wu <feng.wu@intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/vt-d: Switch from ioremap_cache to memremapDan Williams2015-10-141-4/+4
| | | | | | | | | | In preparation for deprecating ioremap_cache() convert its usage in intel-iommu to memremap. This also eliminates the mishandling of the __iomem annotation in the implementation. Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/vt-d: Access iomem correctlyJoerg Roedel2015-08-131-2/+2
| | | | | | | This fixes wrong accesses to iomem introduced by the kdump fixing code. Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/vt-d: Fix leaked ioremap mappingDan Williams2015-08-031-0/+2
| | | | | | | | iommu_load_old_irte() appears to leak the old_irte mapping after use. Cc: Joerg Roedel <jroedel@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* Merge tag 'iommu-updates-v4.2' of ↵Linus Torvalds2015-06-231-94/+158
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: "This time with bigger changes than usual: - A new IOMMU driver for the ARM SMMUv3. This IOMMU is pretty different from SMMUv1 and v2 in that it is configured through in-memory structures and not through the MMIO register region. The ARM SMMUv3 also supports IO demand paging for PCI devices with PRI/PASID capabilities, but this is not implemented in the driver yet. - Lots of cleanups and device-tree support for the Exynos IOMMU driver. This is part of the effort to bring Exynos DRM support upstream. - Introduction of default domains into the IOMMU core code. The rationale behind this is to move functionalily out of the IOMMU drivers to common code to get to a unified behavior between different drivers. The patches here introduce a default domain for iommu-groups (isolation groups). A device will now always be attached to a domain, either the default domain or another domain handled by the device driver. The IOMMU drivers have to be modified to make use of that feature. So long the AMD IOMMU driver is converted, with others to follow. - Patches for the Intel VT-d drvier to fix DMAR faults that happen when a kdump kernel boots. When the kdump kernel boots it re-initializes the IOMMU hardware, which destroys all mappings from the crashed kernel. As this happens before the endpoint devices are re-initialized, any in-flight DMA causes a DMAR fault. These faults cause PCI master aborts, which some devices can't handle properly and go into an undefined state, so that the device driver in the kdump kernel fails to initialize them and the dump fails. This is now fixed by copying over the mapping structures (only context tables and interrupt remapping tables) from the old kernel and keep the old mappings in place until the device driver of the new kernel takes over. This emulates the the behavior without an IOMMU to the best degree possible. - A couple of other small fixes and cleanups" * tag 'iommu-updates-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (69 commits) iommu/amd: Handle large pages correctly in free_pagetable iommu/vt-d: Don't disable IR when it was previously enabled iommu/vt-d: Make sure copied over IR entries are not reused iommu/vt-d: Copy IR table from old kernel when in kdump mode iommu/vt-d: Set IRTA in intel_setup_irq_remapping iommu/vt-d: Disable IRQ remapping in intel_prepare_irq_remapping iommu/vt-d: Move QI initializationt to intel_setup_irq_remapping iommu/vt-d: Move EIM detection to intel_prepare_irq_remapping iommu/vt-d: Enable Translation only if it was previously disabled iommu/vt-d: Don't disable translation prior to OS handover iommu/vt-d: Don't copy translation tables if RTT bit needs to be changed iommu/vt-d: Don't do early domain assignment if kdump kernel iommu/vt-d: Allocate si_domain in init_dmars() iommu/vt-d: Mark copied context entries iommu/vt-d: Do not re-use domain-ids from the old kernel iommu/vt-d: Copy translation tables from old kernel iommu/vt-d: Detect pre enabled translation iommu/vt-d: Make root entry visible for hardware right after allocation iommu/vt-d: Init QI before root entry is allocated iommu/vt-d: Cleanup log messages ...
| * iommu/vt-d: Don't disable IR when it was previously enabledJoerg Roedel2015-06-161-4/+2
| | | | | | | | | | | | | | | | | | Keep it enabled in kdump kernel to guarantee interrupt delivery. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/vt-d: Make sure copied over IR entries are not reusedJoerg Roedel2015-06-161-0/+10
| | | | | | | | | | | | | | | | | | Walk over the copied entries and mark the present ones as allocated. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/vt-d: Copy IR table from old kernel when in kdump modeJoerg Roedel2015-06-161-0/+70
| | | | | | | | | | | | | | | | | | | | When we are booting into a kdump kernel and find IR enabled, copy over the contents of the previous IR table so that spurious interrupts will not be target aborted. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/vt-d: Set IRTA in intel_setup_irq_remappingJoerg Roedel2015-06-161-5/+14
| | | | | | | | | | | | | | | | | | This way we can give the hardware the new IR table right after it has been allocated and initialized. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/vt-d: Disable IRQ remapping in intel_prepare_irq_remappingJoerg Roedel2015-06-161-3/+3
| | | | | | | | | | | | | | | | | | Move it to this function for now, so that the copy routines for irq remapping take no effect yet. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/vt-d: Move QI initializationt to intel_setup_irq_remappingJoerg Roedel2015-06-161-57/+35
| | | | | | | | | | | | | | | | | | QI needs to be enabled when we program the irq remapping table to hardware in the prepare phase later. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/vt-d: Move EIM detection to intel_prepare_irq_remappingJoerg Roedel2015-06-161-23/+24
| | | | | | | | | | | | | | | | | | We need this to be detected already when we program the irq remapping table pointer to hardware. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/vt-d: Cleanup log messagesJoerg Roedel2015-06-161-15/+14
| | | | | | | | | | | | | | | | | | Give them a common prefix that can be grepped for and improve the wording here and there. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* | iommu, x86: Properly handle posted interrupts for IOMMU hotplugFeng Wu2015-06-121-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Return error when inserting a new IOMMU which doesn't support posted interrupts if posted interrupts are already enabled. Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Joerg Roedel <joro@8bytes.org> Cc: jiang.liu@linux.intel.com Cc: iommu@lists.linux-foundation.org Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/1433827237-3382-11-git-send-email-feng.wu@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | iommu, x86: Setup Posted-Interrupts capability for Intel iommuFeng Wu2015-06-121-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Set Posted-Interrupts capability for Intel iommu when Interrupt Remapping is enabled, clear it when disabled. Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Joerg Roedel <joro@8bytes.org> Cc: jiang.liu@linux.intel.com Cc: iommu@lists.linux-foundation.org Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/1433827237-3382-9-git-send-email-feng.wu@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | iommu, x86: Avoid migrating VT-d posted interruptsFeng Wu2015-06-121-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the interrupt is configured in posted mode, the destination of the interrupt is set in the Posted-Interrupts Descriptor and the migration of these interrupts happens during vCPU scheduling. We still update the cached irte, which will be used when changing back to remapping mode, but we avoid writing the table entry as this would overwrite the posted mode entry. Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Joerg Roedel <joro@8bytes.org> Cc: iommu@lists.linux-foundation.org Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/1433827237-3382-7-git-send-email-feng.wu@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | iommu, x86: Save the mode (posted or remapped) of an IRTEFeng Wu2015-06-121-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new field to struct irq_2_iommu, which captures whether the associated IRTE is in posted mode or remapped mode. We update this field when the IRTE is written into the table. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Joerg Roedel <joro@8bytes.org> Cc: jiang.liu@linux.intel.com Cc: iommu@lists.linux-foundation.org Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/1433827237-3382-6-git-send-email-feng.wu@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chipFeng Wu2015-06-121-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Interrupt chip callback to set the VCPU affinity for posted interrupts. [ tglx: Use the helper function to copy from the remap irte instead of open coding it. Massage the comment as well ] Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Cc: iommu@lists.linux-foundation.org Cc: joro@8bytes.org Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/1433827237-3382-5-git-send-email-feng.wu@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | Merge branch 'x86/asm' into x86/apic, to resolve a conflictIngo Molnar2015-05-111-4/+1
|\ \ | |/ | | | | | | | | | | | | Conflicts: arch/x86/kernel/apic/io_apic.c arch/x86/kernel/apic/vector.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * Merge git://git.infradead.org/intel-iommuLinus Torvalds2015-04-261-4/+1
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull intel iommu updates from David Woodhouse: "This lays a little of the groundwork for upcoming Shared Virtual Memory support — fixing some bogus #defines for capability bits and adding the new ones, and starting to use the new wider page tables where we can, in anticipation of actually filling in the new fields therein. It also allows graphics devices to be assigned to VM guests again. This got broken in 3.17 by disallowing assignment of RMRR-afflicted devices. Like USB, we do understand why there's an RMRR for graphics devices — and unlike USB, it's actually sane. So we can make an exception for graphics devices, just as we do USB controllers. Finally, tone down the warning about the X2APIC_OPT_OUT bit, due to persistent requests. X2APIC_OPT_OUT was added to the spec as a nasty hack to allow broken BIOSes to forbid us from using X2APIC when they do stupid and invasive things and would break if we did. Someone noticed that since Windows doesn't have full IOMMU support for DMA protection, setting the X2APIC_OPT_OUT bit made Windows avoid initialising the IOMMU on the graphics unit altogether. This means that it would be available for use in "driver mode", where the IOMMU registers are made available through a BAR of the graphics device and the graphics driver can do SVM all for itself. So they started setting the X2APIC_OPT_OUT bit on *all* platforms with SVM capabilities. And even the platforms which *might*, if the planets had been aligned correctly, possibly have had SVM capability but which in practice actually don't" * git://git.infradead.org/intel-iommu: iommu/vt-d: support extended root and context entries iommu/vt-d: Add new extended capabilities from v2.3 VT-d specification iommu/vt-d: Allow RMRR on graphics devices too iommu/vt-d: Print x2apic opt out info instead of printing a warning iommu/vt-d: kill bogus ecap_niotlb_iunits()
| | * iommu/vt-d: Print x2apic opt out info instead of printing a warningFenghua Yu2015-03-251-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BIOS can set up x2apic_opt_out bit on some platforms, for various misguided reasons like insane SMM code with weird assumptions about what descriptors look like, or wanting Windows not to enable the IOMMU so that the graphics driver will take it over for SVM in "driver mode". A user can either disable the x2apic_opt_out bit in BIOS or by kernel parameter "no_x2apic_optout". Instead of printing a warning, we just print information of x2apic opt out. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | | irq_remapping/vt-d: Init all MSI entries not just the first oneThomas Gleixner2015-05-051-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b106ee63abcc ("irq_remapping/vt-d: Enhance Intel IR driver to support hierarchical irqdomains") caused a regression, which forgot to initialize remapping data structures other than the first entry when setting up remapping entries for multiple MSIs. [ Jiang: Commit message ] Fixes: b106ee63abcc ("irq_remapping/vt-d: Enhance Intel IR driver to support hierarchical irqdomains") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1430707662-28598-2-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | x86/irq: Move check of cfg->move_in_progress into send_cleanup_vector()Jiang Liu2015-04-241-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move check of cfg->move_in_progress into send_cleanup_vector() to prepare for simplifying struct irq_cfg. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1428978610-28986-26-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | irq_remapping/vt-d: Move struct irq_2_iommu into intel_irq_remapping.cJiang Liu2015-04-241-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now only intel_irq_remapping.c access irq_2_iommu, so move it from hw_irq.h into intel_irq_remapping.c. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1428978610-28986-15-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | x86/irq: Remove irq_cfg.irq_remappedJiang Liu2015-04-241-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now there is no user of irq_cfg.irq_remapped, so remove it. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1428978610-28986-14-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | irq_remapping/vt-d: Clean up unsued codeJiang Liu2015-04-241-186/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now we have converted to hierarchical irqdomains, so clean up unused code. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1428978610-28986-11-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | x86/irq: Remove x86_io_apic_ops.print_entries and related interfacesJiang Liu2015-04-241-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now there is no user of x86_io_apic_ops.print_entries anymore, so remove it. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Grant Likely <grant.likely@linaro.org> Link: http://lkml.kernel.org/r/1428978610-28986-4-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | irq_remapping/vt-d: Clean up unused MSI related codeJiang Liu2015-04-241-144/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now MSI interrupt has been converted to new hierarchical irqdomain interfaces, so remove legacy MSI related code. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1428905519-23704-16-git-send-email-jiang.liu@linux.intel.com
* | | irq_remapping/vt-d: Enhance Intel IR driver to support hierarchical irqdomainsJiang Liu2015-04-241-8/+329
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enhance Intel interrupt remapping driver to support hierarchical irqdomains. Implement intel_ir_chip to support stacked irq_chip. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: David Woodhouse <dwmw2@infradead.org> Link: http://lkml.kernel.org/r/1428905519-23704-11-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | irq_remapping/vt-d: Change prototypes to prepare for hierarchical irqdomainJiang Liu2015-04-241-11/+11
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prepare for the conversion to hierarchical irqdomains by changing function prototypes. No functional changes. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1428905519-23704-10-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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