1. 24 4月, 2015 24 次提交
    • J
      x86/irq: Refine the way to allocate irq_cfg for legacy IRQs · 13315320
      Jiang Liu 提交于
      To support legacy ISA IRQs, we need to preallocate irq_cfg structures
      for legacy ISA IRQs. Refine the way to allocate irq_cfg for legacy ISA
      IRQs, so it's more friendly for the hierarchical irqdomain
      implementation.
      Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com>
      Tested-by: NJoerg 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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: Grant Likely <grant.likely@linaro.org>
      Link: http://lkml.kernel.org/r/1428905519-23704-35-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      13315320
    • J
      x86/irq: Implement callbacks to enable hierarchical irqdomains on IOAPICs · 49c7e600
      Jiang Liu 提交于
      Implement required callbacks to prepare for enabling hierarchical
      irqdomains on IOAPICs. After the conversion we can remove quite some
      code from the old implementation.
      Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com>
      Tested-by: NJoerg 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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: Jan Beulich <JBeulich@suse.com>
      Cc: Grant Likely <grant.likely@linaro.org>
      Link: http://lkml.kernel.org/r/1428905519-23704-34-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      49c7e600
    • J
      x86/irq: Prepare IOAPIC interfaces to support hierarchical irqdomains · c4d05a2c
      Jiang Liu 提交于
      Introduce helper functions to manipulate struct irq_alloc_info for
      IOAPIC.  Also add an extra parameter to IOAPIC interfaces to prepare
      for hierarchical irqdomain. Function mp_set_gsi_attr() will be removed
      once we have switched to hierarchical irqdomains.
      Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com>
      Tested-by: NJoerg Roedel <jroedel@suse.de>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Sander Eikelenboom <linux@eikelenboom.it>
      Cc: David Vrabel <david.vrabel@citrix.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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: Len Brown <len.brown@intel.com>
      Cc: Pavel Machek <pavel@ucw.cz>
      Cc: Jan Beulich <JBeulich@suse.com>
      Cc: Grant Likely <grant.likely@linaro.org>
      Cc: David Cohen <david.a.cohen@linux.intel.com>
      Link: http://lkml.kernel.org/r/1428905519-23704-33-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      c4d05a2c
    • J
      x86/irq: Remove unused pre_init_apic_IRQ0() · 4e69d7ea
      Jiang Liu 提交于
      Now there's no user of pre_init_apic_IRQ0(), so remove it.
      Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com>
      Tested-by: NAndy Shevchenko <andriy.shevchenko@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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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: Jan Beulich <JBeulich@suse.com>
      Cc: Grant Likely <grant.likely@linaro.org>
      Link: http://lkml.kernel.org/r/1428905519-23704-32-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      4e69d7ea
    • T
      x86/intel-mid: Delay initialization of APB timer · 6648d1b4
      Thomas Gleixner 提交于
      MID has no PIC, but depending on the platform it requires the
      abt_timer, which is connected to irq0. The timer is set up at
      late_time_init().
      
      But, looking at the MID code it seems, that there is no reason to do
      so. The only code which might need the timer working is the TSC
      calibration code, but thats a non issue on MID as that is using its
      own empty calibration function. And check_timer() is not invoked
      either because MID has no PIC and therefor no legacy irqs.
      
      So if you look at intel_mid_time_init() then you'll see that in the
      ARAT case the timer setup is skipped already. So until the point where
      x86_init.timers.setup_percpu_clockev() is called for the boot cpu
      nothing really needs a timer on MID.
      
      According to the MID code the apbt horror is only used for moorestown.
      Medfield and later use the local apic timer without the apbt nonsense.
      
      The best thing we can do is to drop moorestown support and get rid of
      that apbt nonsense alltogether.
      
      I don't think anyone deeply cares about it not being supported from
      3.18 on. The number of devices which sport a moorestown should be
      pretty limited and the only relevant use case of those is to act as a
      pocket heater with short battery life time. Its pretty pointless to
      update kernels on pocket heaters except for bragging reasons.
      
      If someone at Intel really thinks that we need to keep moorestown
      alive for other than documentary and sentimental reasons, then we can
      move the apbt setup to x86_init.timers.setup_percpu_clockev(). At that
      point the IOAPIC is setup already, so it should just work.
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Tested-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: H. Peter Anvin <hpa@linux.intel.com>
      Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
      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: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
      Link: http://lkml.kernel.org/r/1428905519-23704-30-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      6648d1b4
    • J
      x86/irq: Simplify MSI/DMAR/HPET implementation by using common code · e390d895
      Jiang Liu 提交于
      Use common MSI interfaces instead of private implementations of the
      same functionality to simplify DMAR/HPET driver implementation.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-28-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      e390d895
    • J
      x86/irq: Implement irq_chip.irq_write_msi_msg for MSI/DMAR/HPET irq_chips · 62ac1780
      Jiang Liu 提交于
      Implement irq_chip.irq_write_msi_msg for MSI/DMAR/HPET irq_chips, they
      will be used to replace duplicated code.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-27-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      62ac1780
    • J
      x86/MSI: Replace msi_update_msg() with irq_chip_compose_msi_msg() · 90d84fe9
      Jiang Liu 提交于
      Function irq_chip_compose_msi_msg() can achieve the same goal as
      msi_update_msg(), so remove msi_update_msg().
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-26-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      90d84fe9
    • J
      x86/MSI: Simplify the way to deal with remapped MSI interrupts · 68682a26
      Jiang Liu 提交于
      Simplify the way to deal with remapped MSI interrupts, so we can remove
      irq_chip.irq_print_chip later. We simply change the name when the
      setup detects that the parent domain is remapping.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-25-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      68682a26
    • J
      x86/irq: Normalize x86 irq_chip name · 81dabe2e
      Jiang Liu 提交于
      Some irq_chip names use underscore, others use hyphen. So normalize them
      to use hyphen as separator.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-24-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      81dabe2e
    • J
      x86/htirq: Use hierarchical irqdomain to manage Hypertransport interrupts · 49e07d8f
      Jiang Liu 提交于
      We have slightly changed the architecture interfaces to support htirq
      PCI driver. It's safe because currently Hypertransport interrupt is
      only enabled on x86 platforms.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-22-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      49e07d8f
    • J
      x86/irq: Use hierarchical irqdomain to manage DMAR interrupts · 0921f1da
      Jiang Liu 提交于
      Enhance DMAR code to support hierarchical irqdomain, it helps to make
      the architecture more clear.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-21-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      0921f1da
    • J
      iommu/vt-d: Refine the interfaces to create IRQ for DMAR unit · 34742db8
      Jiang Liu 提交于
      Refine the interfaces to create IRQ for DMAR unit. It's a preparation
      for converting DMAR IRQ to hierarchical irqdomain on x86.
      
      It also moves dmar_alloc_hwirq()/dmar_free_hwirq() from irq_remapping.h
      to dmar.h. They are not irq_remapping specific.
      Signed-off-by: NJiang 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: iommu@lists.linux-foundation.org
      Cc: Vinod Koul <vinod.koul@intel.com>
      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: Tony Luck <tony.luck@intel.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Joerg Roedel <joro@8bytes.org>
      Link: http://lkml.kernel.org/r/1428905519-23704-20-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      34742db8
    • J
      x86/MSI: Clean up unused MSI related code and interfaces · b1855c75
      Jiang Liu 提交于
      Now MSI interrupt has been converted to new hierarchical irqdomain
      interfaces, so remove legacy MSI related code and interfaces.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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: Yijing Wang <wangyijing@huawei.com>
      Link: http://lkml.kernel.org/r/1428905519-23704-19-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      b1855c75
    • J
      irq_remapping: Clean up unused MSI related code · 7a53a121
      Jiang Liu 提交于
      Now MSI interrupt has been converted to new hierarchical irqdomain
      interfaces, so remove legacy MSI related code and interfaces.
      Signed-off-by: NJiang 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: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      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>
      Link: http://lkml.kernel.org/r/1428905519-23704-18-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      7a53a121
    • J
      x86/irq: Directly call native_compose_msi_msg() for DMAR IRQ · 80aa2833
      Jiang Liu 提交于
      DMAR interrupt won't be remapped by interrupt remapping hardware,
      so directly call native_compose_msi_msg() for DMAR IRQ to compose MSI
      message data. This will help to simplify MSI code later.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-15-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      80aa2833
    • J
      x86/MSI: Use hierarchical irqdomains to manage MSI interrupts · 52f518a3
      Jiang Liu 提交于
      Enhance MSI code to support hierarchical irqdomains, it helps to make
      the architecture more clear.
      Signed-off-by: NJiang 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: Joerg Roedel <jroedel@suse.de>
      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/1428905519-23704-14-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      52f518a3
    • J
      x86/hpet: Enhance HPET IRQ to support hierarchical irqdomains · 3cb96f0c
      Jiang Liu 提交于
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
      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: Andy Lutomirski <luto@amacapital.net>
      Link: http://lkml.kernel.org/r/1428905519-23704-13-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      3cb96f0c
    • J
      x86/dmar: Use new irqdomain interfaces to allocate/free IRQ · a62b32cd
      Jiang Liu 提交于
      Use new irqdomain interfaces to allocate/free IRQ for DMAR and interrupt
      remapping, so we can remove GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later.
      
      The private definitions of irq_alloc_hwirqs()/irq_free_hwirqs() are a
      temporary solution, they will be removed once we have converted the
      interrupt remapping driver to use irqdomain framework.
      Signed-off-by: NJiang 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: Joerg Roedel <jroedel@suse.de>
      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/1428905519-23704-8-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      a62b32cd
    • J
      x86/htirq: Use new irqdomain interfaces to allocate/free IRQ · af87baed
      Jiang Liu 提交于
      Use new irqdomain interfaces to allocate/free IRQ for HTIRQ, so we can
      remove GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later.
      
      This patch changes the interfaces between arch independent PCI driver
      and arch specific code. Currently HT_IRQ is only enabled on x86, so it
      does not affect other architectures.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-7-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      af87baed
    • J
      x86/MSI: Use new irqdomain interfaces to allocate/free IRQ · 4c8f9960
      Jiang Liu 提交于
      Use new irqdomain interfaces to allocate/free IRQ for PCI MSI, so we
      can remove GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1416894816-23245-5-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      4c8f9960
    • J
      x86/hpet: Use new irqdomain interfaces to allocate/free IRQ · bd8eb63f
      Jiang Liu 提交于
      Use new irqdomain interfaces to allocate/free IRQ for HPET, so we can
      remove GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later.
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
      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: Andy Lutomirski <luto@amacapital.net>
      Link: http://lkml.kernel.org/r/1416894816-23245-4-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      bd8eb63f
    • J
      x86/irq: Use hierarchical irqdomain to manage CPU interrupt vectors · b5dc8e6c
      Jiang Liu 提交于
      Abstract CPU local APIC as an interrupt controller and create an
      irqdomain for it to manage CPU interrupt vectors. It's the base to
      enable hierarchical irqdomains on x86 systems. 
      
      The final irqdomain hierarchy will look like this:
      
      IOAPIC domain    ----|
      MSI/MSI-x domain ----> [Interrupt Remapping domain] -> CPU vector domain
      HPET_IRQ domain  ----|                                         ^
                                                                     |
      DMAR domain      ----------------------------------------------|
      HT_IRQ domain    ----------------------------------------------|
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      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: Grant Likely <grant.likely@linaro.org>
      Link: http://lkml.kernel.org/r/1428905519-23704-3-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      b5dc8e6c
    • J
      x86/irq: Save destination CPU ID in irq_cfg · 5f0052f9
      Jiang Liu 提交于
      Cache destination CPU APIC ID into struct irq_cfg when assigning vector
      for interrupt. Upper layer just needs to read the cached APIC ID instead
      of calling apic->cpu_mask_to_apicid_and(), it helps to hide APIC driver
      details from IOAPIC/HPET/MSI drivers..
      Signed-off-by: NJiang 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: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.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>
      Link: http://lkml.kernel.org/r/1428905519-23704-2-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      5f0052f9
  2. 18 4月, 2015 1 次提交
  3. 17 4月, 2015 5 次提交
  4. 16 4月, 2015 2 次提交
    • O
      x86/ptrace: Fix the TIF_FORCED_TF logic in handle_signal() · fd0f86b6
      Oleg Nesterov 提交于
      When the TIF_SINGLESTEP tracee dequeues a signal,
      handle_signal() clears TIF_FORCED_TF and X86_EFLAGS_TF but
      leaves TIF_SINGLESTEP set.
      
      If the tracer does PTRACE_SINGLESTEP again, enable_single_step()
      sets X86_EFLAGS_TF but not TIF_FORCED_TF.  This means that the
      subsequent PTRACE_CONT doesn't not clear X86_EFLAGS_TF, and the
      tracee gets the wrong SIGTRAP.
      
      Test-case (needs -O2 to avoid prologue insns in signal handler):
      
      	#include <unistd.h>
      	#include <stdio.h>
      	#include <sys/ptrace.h>
      	#include <sys/wait.h>
      	#include <sys/user.h>
      	#include <assert.h>
      	#include <stddef.h>
      
      	void handler(int n)
      	{
      		asm("nop");
      	}
      
      	int child(void)
      	{
      		assert(ptrace(PTRACE_TRACEME, 0,0,0) == 0);
      		signal(SIGALRM, handler);
      		kill(getpid(), SIGALRM);
      		return 0x23;
      	}
      
      	void *getip(int pid)
      	{
      		return (void*)ptrace(PTRACE_PEEKUSER, pid,
      					offsetof(struct user, regs.rip), 0);
      	}
      
      	int main(void)
      	{
      		int pid, status;
      
      		pid = fork();
      		if (!pid)
      			return child();
      
      		assert(wait(&status) == pid);
      		assert(WIFSTOPPED(status) && WSTOPSIG(status) == SIGALRM);
      
      		assert(ptrace(PTRACE_SINGLESTEP, pid, 0, SIGALRM) == 0);
      		assert(wait(&status) == pid);
      		assert(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP);
      		assert((getip(pid) - (void*)handler) == 0);
      
      		assert(ptrace(PTRACE_SINGLESTEP, pid, 0, SIGALRM) == 0);
      		assert(wait(&status) == pid);
      		assert(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP);
      		assert((getip(pid) - (void*)handler) == 1);
      
      		assert(ptrace(PTRACE_CONT, pid, 0,0) == 0);
      		assert(wait(&status) == pid);
      		assert(WIFEXITED(status) && WEXITSTATUS(status) == 0x23);
      
      		return 0;
      	}
      
      The last assert() fails because PTRACE_CONT wrongly triggers
      another single-step and X86_EFLAGS_TF can't be cleared by
      debugger until the tracee does sys_rt_sigreturn().
      
      Change handle_signal() to do user_disable_single_step() if
      stepping, we do not need to preserve TIF_SINGLESTEP because we
      are going to do ptrace_notify(), and it is simply wrong to leak
      this bit.
      
      While at it, change the comment to explain why we also need to
      clear TF unconditionally after setup_rt_frame().
      
      Note: in the longer term we should probably change
      setup_sigcontext() to use get_flags() and then just remove this
      user_disable_single_step().  And, the state of TIF_FORCED_TF can
      be wrong after restore_sigcontext() which can set/clear TF, this
      needs another fix.
      
      This fix fixes the 'single_step_syscall_32' testcase in
      the x86 testsuite:
      
      Before:
      
      	~/linux/tools/testing/selftests/x86> ./single_step_syscall_32
      	[RUN]   Set TF and check nop
      	[OK]    Survived with TF set and 9 traps
      	[RUN]   Set TF and check int80
      	[OK]    Survived with TF set and 9 traps
      	[RUN]   Set TF and check a fast syscall
      	[WARN]  Hit 10000 SIGTRAPs with si_addr 0xf7789cc0, ip 0xf7789cc0
      	Trace/breakpoint trap (core dumped)
      
      After:
      
      	~/linux/linux/tools/testing/selftests/x86> ./single_step_syscall_32
      	[RUN]   Set TF and check nop
      	[OK]    Survived with TF set and 9 traps
      	[RUN]   Set TF and check int80
      	[OK]    Survived with TF set and 9 traps
      	[RUN]   Set TF and check a fast syscall
      	[OK]    Survived with TF set and 39 traps
      	[RUN]   Fast syscall with TF cleared
      	[OK]    Nothing unexpected happened
      Reported-by: NEvan Teran <eteran@alum.rit.edu>
      Reported-by: NPedro Alves <palves@redhat.com>
      Tested-by: NAndres Freund <andres@anarazel.de>
      Signed-off-by: NOleg Nesterov <oleg@redhat.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      [ Added x86 self-test info. ]
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      fd0f86b6
    • J
      x86: mtrr: if: remove use of seq_printf return value · 3ac62bc0
      Joe Perches 提交于
      The seq_printf return value, because it's frequently misused,
      will eventually be converted to void.
      
      See: commit 1f33c41c ("seq_file: Rename seq_overflow() to
           seq_has_overflowed() and make public")
      Signed-off-by: NJoe Perches <joe@perches.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      3ac62bc0
  5. 15 4月, 2015 2 次提交
  6. 13 4月, 2015 1 次提交
  7. 12 4月, 2015 1 次提交
  8. 11 4月, 2015 4 次提交