- 24 4月, 2015 24 次提交
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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由 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>
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- 18 4月, 2015 1 次提交
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由 Ingo Molnar 提交于
Dan Carpenter reported that pt_event_add() has buggy error handling logic: it returns 0 instead of -EBUSY when it fails to start a newly added event. Furthermore, the control flow in this function is messy, with cleanup labels mixed with direct returns. Fix the bug and clean up the code by converting it to a straight fast path for the regular non-failing case, plus a clear sequence of cascading goto labels to do all cleanup. NOTE: I materially changed the existing clean up logic in the pt_event_start() failure case to use the direct perf_aux_output_end() path, not pt_event_del(), because perf_aux_output_end() is enough here. Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Acked-by: NAlexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150416103830.GB7847@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 17 4月, 2015 5 次提交
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由 Borislav Petkov 提交于
So I was playing with gdb today and did this simple thing: gdb /bin/ls ... (gdb) run Box exploded with this splat: BUG: unable to handle kernel NULL pointer dereference at 00000000000001d0 IP: [<ffffffff8100fe5a>] xstateregs_get+0x7a/0x120 [...] Call Trace: ptrace_regset ptrace_request ? wait_task_inactive ? preempt_count_sub arch_ptrace ? ptrace_get_task_struct SyS_ptrace system_call_fastpath ... because we do cache &target->thread.fpu.state->xsave into the local variable xsave but that pointer is NULL at that time and it gets initialized later, in init_fpu(), see: e7f180dc ("x86/fpu: Change xstateregs_get()/set() to use ->xsave.i387 rather than ->fxsave") The fix is simple: load xsave *after* init_fpu() has run. Also do the same in xstateregs_set(), as suggested by Oleg Nesterov. Signed-off-by: NBorislav Petkov <bp@suse.de> Acked-by: NOleg Nesterov <oleg@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rik van Riel <riel@redhat.com> Cc: Tavis Ormandy <taviso@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1429209697-5902-1-git-send-email-bp@alien8.deSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Kan Liang 提交于
Same as Haswell, Broadwell also support the LBR callstack. Signed-off-by: NKan Liang <kan.liang@intel.com> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Acked-by: NAndi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1427962377-40955-1-git-send-email-kan.liang@intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Jacob Pan 提交于
RAPL energy hardware unit can vary within a single CPU package, e.g. HSW server DRAM has a fixed energy unit of 15.3 uJ (2^-16) whereas the unit on other domains can be enumerated from power unit MSR. There might be other variations in the future, this patch adds per cpu model quirk to allow special handling of certain cpus. hw_unit is also removed from per cpu data since it is not per cpu and the sampling rate for energy counter is typically not high. Without this patch, DRAM domain on HSW servers will be counted 4x higher than the real energy counter. Signed-off-by: NJacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: NStephane Eranian <eranian@google.com> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1427405325-780-1-git-send-email-jacob.jun.pan@linux.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Peter Zijlstra 提交于
Ingo reported that cycles:pp didn't work for him on some machines. It turns out that in this commit: af4bdcf6 perf/x86/intel: Disallow flags for most Core2/Atom/Nehalem/Westmere events Andi forgot to explicitly allow that event when he disabled event flags for PEBS on those uarchs. Reported-by: NIngo Molnar <mingo@kernel.org> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: af4bdcf6 ("perf/x86/intel: Disallow flags for most Core2/Atom/Nehalem/Westmere events") Signed-off-by: NIngo Molnar <mingo@kernel.org>
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由 Peter Zijlstra 提交于
Somehow we ended up with overlapping flags when merging the RDPMC control flag - this is bad, fix it. Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: NIngo Molnar <mingo@kernel.org>
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- 16 4月, 2015 2 次提交
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由 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>
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由 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>
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- 15 4月, 2015 2 次提交
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由 Kirill A. Shutemov 提交于
We would want to use number of page table level to define mm_struct. Let's expose it as CONFIG_PGTABLE_LEVELS. Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Tested-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ulrich Obergfell 提交于
Have kvm_guest_init() use hardlockup_detector_disable() instead of watchdog_enable_hardlockup_detector(false). Remove the watchdog_hardlockup_detector_is_enabled() and the watchdog_enable_hardlockup_detector() function which are no longer needed. Signed-off-by: NUlrich Obergfell <uobergfe@redhat.com> Signed-off-by: NDon Zickus <dzickus@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 4月, 2015 1 次提交
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由 Richard Weinberger 提交于
As execution domain support is gone we can remove signal translation from the signal code and remove exec_domain from thread_info. Signed-off-by: NRichard Weinberger <richard@nod.at>
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- 12 4月, 2015 1 次提交
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由 Ingo Molnar 提交于
Dan Carpenter pointed out that the control flow in pt_pmu_hw_init() is a bit messy: for example the kfree(de_attrs) is entirely superfluous. Another problem is the inconsistent mixing of label based and direct return error handling. Add modern, label based error handling instead and clean up the code a bit as well. Note that we'll still do a kfree(NULL) in the normal case - this does not matter as this is an init path and kfree() returns early if it sees a NULL. Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20150409090805.GG17605@mwandaSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 11 4月, 2015 4 次提交
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由 Denys Vlasenko 提交于
I don't see why we report e.g. orix_ax, which is not always meaningful, but don't report ax, which is meaningful. Signed-off-by: NDenys Vlasenko <dvlasenk@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1428671219-29341-4-git-send-email-dvlasenk@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Denys Vlasenko 提交于
user_64bit_mode(regs) basically checks regs->cs to point to a 64-bit segment. This check used to be unreliable here because regs->cs was not always correct in syscalls. Now regs->cs is always correct: in syscalls, in interrupts, in exceptions. No need to emply heuristics here. Signed-off-by: NDenys Vlasenko <dvlasenk@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1428671219-29341-3-git-send-email-dvlasenk@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Denys Vlasenko 提交于
Yes, it is true that cx contains return address. It's not clear why we trash it. Stop doing that. Signed-off-by: NDenys Vlasenko <dvlasenk@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1428671219-29341-2-git-send-email-dvlasenk@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Denys Vlasenko 提交于
After recent changes to syscall entry points, user_regs->{cs,ss,sp} are always correct. (They used to be undefined while in syscalls). We can report them reliably, without guessing. Signed-off-by: NDenys Vlasenko <dvlasenk@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1428671219-29341-1-git-send-email-dvlasenk@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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