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2013-09-03don't pass superblock to hypfs_diag_create_filesAl Viro3-30/+26
Signed-off-by: Al Viro <[email protected]>
2013-09-03don't pass superblock to hypfs_vm_create_files()Al Viro3-36/+35
Signed-off-by: Al Viro <[email protected]>
2013-09-03oprofilefs_create_...() do not need superblock argumentAl Viro1-13/+13
same story as with oprofilefs_mkdir() Signed-off-by: Al Viro <[email protected]>
2013-09-03oprofilefs_mkdir() doesn't need superblock argumentAl Viro1-3/+3
it's always equal to ->d_sb of the second argument (parent dentry), due to either being literally that, or ->d_sb of parent's parent. Signed-off-by: Al Viro <[email protected]>
2013-09-03oprofile: don't bother with passing superblock to ->create_files()Al Viro1-18/+17
Signed-off-by: Al Viro <[email protected]>
2013-08-30s390/pci: use virtual memory for iommu bitmapSebastian Ott1-9/+3
The bitmap used to mark dma mappings can be quite large on systems with huge amounts of memory. Use virtual memory for this bitmap. Suggested-by: Alexander Schmidt <[email protected]> Reviewed-by: Gerald Schaefer <[email protected]> Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-30s390/pci: update function handle after resume from hibernateSebastian Ott4-5/+45
Function handles may change while the system was in hibernation use list pci functions and update the function handles. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-30s390/pci: try harder to modify a functionSebastian Ott1-2/+2
In rare situations a PCI function can report a busy condition when we issue the modify pci function command. A temporary busy condition can exceed 1 second but not 2 seconds. Increase the time until we report an error to 2 seconds. Also increase the time we sleep between the retries to reduce the load in this case. Suggested-by: Gerald Schaefer <[email protected]> Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-30s390/pci: split lpfSebastian Ott4-54/+72
List pci functions is used to query and iterate over pci functions. This function currently has 2 users - initial device discovery and rescan after a machine check. Instead of having a multipurpose function pass a callback which gets called for each pci function. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-30s390/hibernate: add early resume functionSebastian Ott3-5/+12
Some functions that do arch specific resume actions are called directly from swsusp_asm64.S . Before we add another function call provide a generic s390_early_resume function which can be used for this purpose. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-30s390/pci: add recover sysfs knobSebastian Ott2-2/+29
Add an arch specific attribute to recover a pci function from an error state or config space blockage. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-30s390/pci: use claim_resourceSebastian Ott1-29/+34
Use pci_claim_resource to find and request bus ressources in pcibios_add_device. Also move some (de)initialization stuff to pcibios_enable_device/pcibios_disable_device. Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-30s390/pci/hotplug: convert to be builtin onlySebastian Ott2-41/+17
Convert s390' pci hotplug to be builtin only, with no module option. Suggested-by: Bjorn Helgaas <[email protected]> Signed-off-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-29s390/mm: implement software referenced bitsMartin Schwidefsky5-187/+244
The last remaining use for the storage key of the s390 architecture is reference counting. The alternative is to make page table entries invalid while they are old. On access the fault handler marks the pte/pmd as young which makes the pte/pmd valid if the access rights allow read access. The pte/pmd invalidations required for software managed reference bits cost a bit of performance, on the other hand the RRBE/RRBM instructions to read and reset the referenced bits are quite expensive as well. Reviewed-by: Gerald Schaefer <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-28s390/tx: allow program interruption filtering in user spaceMartin Schwidefsky1-3/+3
A user space program using the transactional execution facility should be allowed to do program interrupt filtering. Do not set the transactional-execution program-interruption-filtering override (PIFO) bit in CR0. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-28s390/pgtable: fix mprotect for single-threaded KVM guestsMartin Schwidefsky1-0/+1
For a single-threaded KVM guest ptep_modify_prot_start will not use IPTE, the invalid bit will therefore not be set. If DEBUG_VM is set pgste_set_key called by ptep_modify_prot_commit will complain about the missing invalid bit. ptep_modify_prot_start should set the invalid bit in all cases. Cc: [email protected] # 3.10+ Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-28s390/time: return with irqs disabled from psw_idleMartin Schwidefsky5-6/+4
Modify the psw_idle waiting logic in entry[64].S to return with interrupts disabled. This avoids potential issues with udelay and interrupt loops as interrupts are not reenabled after clock comparator interrupts. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/kprobes: add support for compare and branch instructionsHeiko Carstens1-2/+19
The compare and branch instructions (not relative) all need special handling when kprobed: - if a branch was taken, the instruction pointer should be left alone - if a branch was not taken, the instruction pointer must be adjusted The compare and branch instructions family was introduced with the general instruction extension facility (z10). Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/switch_to: fix save_access_regs() / restore_access_regs()Heiko Carstens1-2/+7
Fix broken contraints for both save_access_regs() and restore_access_regs(). The constraints are incorrect since they tell the compiler that the inline assemblies only access the first element of an array of 16 elements. Therefore the compiler could generate incorrect code. Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/bitops: fix inline assembly constraintsHeiko Carstens1-6/+6
Fix inline assembly contraints for non atomic bitops functions. This is broken since 2.6.34 987bcdac "[S390] use inline assembly contraints available with gcc 3.3.3". Reported-by: Andreas Krebbel <[email protected]> Reported-by: Peter Oberparleiter <[email protected]> Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/mm: introduce ptep_flush_lazy helperMartin Schwidefsky5-25/+24
Isolate the logic of IDTE vs. IPTE flushing of ptes in two functions, ptep_flush_lazy and __tlb_flush_mm_lazy. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/time: clock comparator revalidationMartin Schwidefsky1-4/+1
Always use the S390_lowcore.clock_comparator field to revalidate the clock comparator CPU register after a machine check. This avoids an unnecssary external interrupt after a machine check if no timer is pending. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/pgtable: add pgste_get helperMartin Schwidefsky1-1/+10
ptep_modify_prot_start uses the pgste_set helper to store the pgste, while ptep_modify_prot_commit uses its own pointer magic to retrieve the value again. Add the pgste_get help function to keep things symmetrical and improve readability. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/pgtable: skip pgste updates on full flushMartin Schwidefsky1-4/+3
On process exit there is no more need for the pgste information. Skip the expensive storage key operations which should speed up termination of KVM processes. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/mm: cleanup page table definitionsMartin Schwidefsky10-325/+333
Improve the encoding of the different pte types and the naming of the page, segment table and region table bits. Due to the different pte encoding the hugetlbfs primitives need to be adapted as well. To improve compatability with common code make the huge ptes use the encoding of normal ptes. The conversion between the pte and pmd encoding for a huge pte is done with set_huge_pte_at and huge_ptep_get. Overall the code is now easier to understand. Reviewed-by: Gerald Schaefer <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/mm: remove dead pfmf inline assemblyHeiko Carstens1-10/+0
Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390: convert interrupt handling to use generic hardirqMartin Schwidefsky12-455/+207
With the introduction of PCI it became apparent that s390 should convert to generic hardirqs as too many drivers do not have the correct dependency for GENERIC_HARDIRQS. On the architecture level s390 does not have irq lines. It has external interrupts, I/O interrupts and adapter interrupts. This patch hard-codes all external interrupts as irq #1, all I/O interrupts as irq #2 and all adapter interrupts as irq #3. The additional information from the lowcore associated with the interrupt is stored in the pt_regs of the interrupt frame, where the interrupt handler can pick it up. For PCI/MSI interrupts the adapter interrupt handler scans the relevant bit fields and calls generic_handle_irq with the virtual irq number for the MSI interrupt. Reviewed-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/pci: use adapter interrupt vector helpersMartin Schwidefsky3-208/+165
Make use of the adapter interrupt helpers in the PCI code. This is the first step to convert the MSI interrupt code to PCI domains. The patch removes the limitation of 64 adapter interrupts per PCI function. Reviewed-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/pci: cleanup function namesMartin Schwidefsky5-28/+28
Rename s390pci_xyz to zpci_xxz and set_irq_ctrl to zpci_set_irq_ctrl. Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390/airq: introduce adapter interrupt vector helperMartin Schwidefsky1-0/+67
The PCI code is the first user of adapter interrupts vectors. Add a set of helpers to airq.c to separate the adatper interrupt code from the PCI bits. The helpers allow for adapter interrupt vectors of any size. Reviewed-by: Sebastian Ott <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-22s390: replace remaining strict_strtoul() with kstrtoul()Heiko Carstens2-2/+2
Replace the last two strict_strtoul() with kstrtoul(). Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-08-21Merge tag 'tegra-for-3.12-soc' of ↵Kevin Hilman2-5/+0
git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc From: Stephen Warren: ARM: tegra: core SoC enhancements for 3.12 This branch includes a number of enhancements to core SoC support for Tegra devices. The major new features are: * Adds a new CPU-power-gated cpuidle state for Tegra114. * Adds initial system suspend support for Tegra114, initially supporting just CPU-power-gating during suspend. * Adds "LP1" suspend mode support for all of Tegra20/30/114. This mode both gates CPU power, and places the DRAM into self-refresh mode. * A new DT-driven PCIe driver to Tegra20/30. The driver is also moved from arch/arm/mach-tegra/ to drivers/pci/host/. The PCIe driver work depends on the following tag from Thomas Petazzoni: git://git.infradead.org/linux-mvebu.git mis-3.12.2 ... which is merged into the middle of this pull request. * tag 'tegra-for-3.12-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (33 commits) ARM: tegra: disable LP2 cpuidle state if PCIe is enabled MAINTAINERS: Add myself as Tegra PCIe maintainer PCI: tegra: set up PADS_REFCLK_CFG1 PCI: tegra: Add Tegra 30 PCIe support PCI: tegra: Move PCIe driver to drivers/pci/host PCI: msi: add default MSI operations for !HAVE_GENERIC_HARDIRQS platforms ARM: tegra: add LP1 suspend support for Tegra114 ARM: tegra: add LP1 suspend support for Tegra20 ARM: tegra: add LP1 suspend support for Tegra30 ARM: tegra: add common LP1 suspend support clk: tegra114: add LP1 suspend/resume support ARM: tegra: config the polarity of the request of sys clock ARM: tegra: add common resume handling code for LP1 resuming ARM: pci: add ->add_bus() and ->remove_bus() hooks to hw_pci of: pci: add registry of MSI chips PCI: Introduce new MSI chip infrastructure PCI: remove ARCH_SUPPORTS_MSI kconfig option PCI: use weak functions for MSI arch-specific functions ARM: tegra: unify Tegra's Kconfig a bit more ARM: tegra: remove the limitation that Tegra114 can't support suspend ... Signed-off-by: Kevin Hilman <[email protected]>
2013-08-16s390: Fix broken buildGuenter Roeck1-1/+1
Fix this build error: In file included from fs/exec.c:61:0: arch/s390/include/asm/tlb.h:35:23: error: expected identifier or '(' before 'unsigned' arch/s390/include/asm/tlb.h:36:1: warning: no semicolon at end of struct or union [enabled by default] arch/s390/include/asm/tlb.h: In function 'tlb_gather_mmu': arch/s390/include/asm/tlb.h:57:5: error: 'struct mmu_gather' has no member named 'end' Broken due to commit 2b047252d0 ("Fix TLB gather virtual address range invalidation corner cases"). Cc: Greg Kroah-Hartman <[email protected]> Cc: [email protected] Signed-off-by: Guenter Roeck <[email protected]> [ Oh well. We had build testing for ppc amd um, but no s390 - Linus ] Signed-off-by: Linus Torvalds <[email protected]>
2013-08-16Fix TLB gather virtual address range invalidation corner casesLinus Torvalds1-2/+6
Ben Tebulin reported: "Since v3.7.2 on two independent machines a very specific Git repository fails in 9/10 cases on git-fsck due to an SHA1/memory failures. This only occurs on a very specific repository and can be reproduced stably on two independent laptops. Git mailing list ran out of ideas and for me this looks like some very exotic kernel issue" and bisected the failure to the backport of commit 53a59fc67f97 ("mm: limit mmu_gather batching to fix soft lockups on !CONFIG_PREEMPT"). That commit itself is not actually buggy, but what it does is to make it much more likely to hit the partial TLB invalidation case, since it introduces a new case in tlb_next_batch() that previously only ever happened when running out of memory. The real bug is that the TLB gather virtual memory range setup is subtly buggered. It was introduced in commit 597e1c3580b7 ("mm/mmu_gather: enable tlb flush range in generic mmu_gather"), and the range handling was already fixed at least once in commit e6c495a96ce0 ("mm: fix the TLB range flushed when __tlb_remove_page() runs out of slots"), but that fix was not complete. The problem with the TLB gather virtual address range is that it isn't set up by the initial tlb_gather_mmu() initialization (which didn't get the TLB range information), but it is set up ad-hoc later by the functions that actually flush the TLB. And so any such case that forgot to update the TLB range entries would potentially miss TLB invalidates. Rather than try to figure out exactly which particular ad-hoc range setup was missing (I personally suspect it's the hugetlb case in zap_huge_pmd(), which didn't have the same logic as zap_pte_range() did), this patch just gets rid of the problem at the source: make the TLB range information available to tlb_gather_mmu(), and initialize it when initializing all the other tlb gather fields. This makes the patch larger, but conceptually much simpler. And the end result is much more understandable; even if you want to play games with partial ranges when invalidating the TLB contents in chunks, now the range information is always there, and anybody who doesn't want to bother with it won't introduce subtle bugs. Ben verified that this fixes his problem. Reported-bisected-and-tested-by: Ben Tebulin <[email protected]> Build-testing-by: Stephen Rothwell <[email protected]> Build-testing-by: Richard Weinberger <[email protected]> Reviewed-by: Michal Hocko <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]>
2013-08-14Merge branch 'timers/nohz-v3' of ↵Ingo Molnar3-3/+8
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks into timers/nohz Pull nohz improvements from Frederic Weisbecker: " It mostly contains fixes and full dynticks off-case optimizations. I believe that distros want to enable this feature so it seems important to optimize the case where the "nohz_full=" parameter is empty. ie: I'm trying to remove any performance regression that comes with NO_HZ_FULL=y when the feature is not used. This patchset improves the current situation a lot (off-case appears to be around 11% faster with hackbench, although I guess it may vary depending on the configuration but it should be significantly faster in any case) now there is still some work to do: I can still observe a remaining loss of 1.6% throughput seen with hackbench compared to CONFIG_NO_HZ_FULL=n. " Signed-off-by: Ingo Molnar <[email protected]>
2013-08-14vtime: Describe overriden functions in dedicated arch headersFrederic Weisbecker3-3/+8
If the arch overrides some generic vtime APIs, let it describe these on a dedicated and standalone header. This way it becomes convenient to include it in vtime generic headers without irrelevant stuff in such a low level header. Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Li Zhong <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Kevin Hilman <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Heiko Carstens <[email protected]>
2013-08-12PCI: remove ARCH_SUPPORTS_MSI kconfig optionThomas Petazzoni1-1/+0
Now that we have weak versions for each of the PCI MSI architecture functions, we can actually build the MSI support for all platforms, regardless of whether they provide or not architecture-specific versions of those functions. For this reason, the ARCH_SUPPORTS_MSI hidden kconfig boolean becomes useless, and this patch gets rid of it. Signed-off-by: Thomas Petazzoni <[email protected]> Acked-by: Bjorn Helgaas <[email protected]> Acked-by: Benjamin Herrenschmidt <[email protected]> Tested-by: Daniel Price <[email protected]> Tested-by: Thierry Reding <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: [email protected] Cc: Martin Schwidefsky <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: [email protected] Cc: Russell King <[email protected]> Cc: Tony Luck <[email protected]> Cc: Fenghua Yu <[email protected]> Cc: [email protected] Cc: Ralf Baechle <[email protected]> Cc: [email protected] Cc: David S. Miller <[email protected]> Cc: [email protected] Cc: Chris Metcalf <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-08-12PCI: use weak functions for MSI arch-specific functionsThomas Petazzoni1-4/+0
Until now, the MSI architecture-specific functions could be overloaded using a fairly complex set of #define and compile-time conditionals. In order to prepare for the introduction of the msi_chip infrastructure, it is desirable to switch all those functions to use the 'weak' mechanism. This commit converts all the architectures that were overidding those MSI functions to use the new strategy. Note that we keep two separate, non-weak, functions default_teardown_msi_irqs() and default_restore_msi_irqs() for the default behavior of the arch_teardown_msi_irqs() and arch_restore_msi_irqs(), as the default behavior is needed by x86 PCI code. Signed-off-by: Thomas Petazzoni <[email protected]> Acked-by: Bjorn Helgaas <[email protected]> Acked-by: Benjamin Herrenschmidt <[email protected]> Tested-by: Daniel Price <[email protected]> Tested-by: Thierry Reding <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: [email protected] Cc: Martin Schwidefsky <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: [email protected] Cc: Russell King <[email protected]> Cc: Tony Luck <[email protected]> Cc: Fenghua Yu <[email protected]> Cc: [email protected] Cc: Ralf Baechle <[email protected]> Cc: [email protected] Cc: David S. Miller <[email protected]> Cc: [email protected] Cc: Chris Metcalf <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-08-11Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2-9/+16
Pull s390 kvm fixes from Paolo Bonzini: "Two fixes for s390" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: s390: fix pfmf non-quiescing control handling KVM: s390: move kvm_guest_enter,exit closer to sie
2013-07-29KVM: s390: Make KVM_HVA_ERR_BAD usable on s390Dominik Dingel1-0/+8
Current common code uses PAGE_OFFSET to indicate a bad host virtual address. As this check won't work on architectures that don't map kernel and user memory into the same address space (e.g. s390), such architectures can now provide their own KVM_HVA_ERR_BAD defines. Signed-off-by: Dominik Dingel <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-29KVM: s390: Add helper function for setting condition codeThomas Huth2-9/+13
Introduced a helper function for setting the CC in the guest PSW to improve the readability of the code. Signed-off-by: Thomas Huth <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-29KVM: s390: Fix sparse warnings in priv.cThomas Huth1-3/+3
sparse complained about the missing UL postfix for long constants. Signed-off-by: Thomas Huth <[email protected]> Acked-by: Cornelia Huck <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-29KVM: s390: declare virtual HW facilitiesMichael Mueller3-15/+22
The patch renames the array holding the HW facility bitmaps. This allows to interprete the variable as set of virtual machine specific "virtual" facilities. The basic idea is to make virtual facilities externally managable in future. An availability test for virtual facilites has been added as well. Signed-off-by: Michael Mueller <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-29KVM: s390: fix task size checkMartin Schwidefsky2-1/+3
The gmap_map_segment function uses PGDIR_SIZE in the check for the maximum address in the tasks address space. This incorrectly limits the amount of memory usable for a kvm guest to 4TB. The correct limit is (1UL << 53). As the TASK_SIZE has different values (4TB vs 8PB) dependent on the existance of the fourth page table level, create a new define 'TASK_MAX_SIZE' for (1UL << 53). Signed-off-by: Martin Schwidefsky <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-29KVM: s390: allow sie enablement for multi-threaded programsMartin Schwidefsky4-84/+129
Improve the code to upgrade the standard 2K page tables to 4K page tables with PGSTEs to allow the operation to happen when the program is already multi-threaded. Signed-off-by: Martin Schwidefsky <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-29KVM: s390: fix pfmf non-quiescing control handlingHeiko Carstens1-2/+2
Fix the test within handle_pfmf() if the host has the NQ key-setting facility installed. Right now the code would incorrectly generate a program check in the guest if the NQ control bit for a pfmf request was set and if the host has the NQ key-setting facility installed. Signed-off-by: Heiko Carstens <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-29KVM: s390: move kvm_guest_enter,exit closer to sieDominik Dingel1-7/+14
Any uaccess between guest_enter and guest_exit could trigger a page fault, the page fault handler would handle it as a guest fault and translate a user address as guest address. Signed-off-by: Dominik Dingel <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> CC: [email protected] Signed-off-by: Paolo Bonzini <[email protected]>
2013-07-26s390/perf: fix compile error (undefined reference sie_exit)Heiko Carstens1-4/+5
The perf_event code references sie_exit even if KVM is not available. So add proper ifdefs to fix this one: arch/s390/built-in.o: In function `sys_call_table_emu': (.rodata+0x2b98): undefined reference to `sie_exit' arch/s390/built-in.o: In function `sys_call_table_emu': (.rodata+0x2ba0): undefined reference to `sie_exit' make: *** [vmlinux] Error 1 Reported-by: Zhouping Liu <[email protected]> Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2013-07-26s390/bitops: fix find_next_bit_leftMartin Schwidefsky1-1/+1
The find_next_bit_left function is broken if used with an offset which is not a multiple of 64. The shift to mask the bits of a 64-bit word not to search is in the wrong direction, the result can be either a bit found smaller than the offset or failure to find a set bit. Cc: <[email protected]> # v3.8+ Signed-off-by: Martin Schwidefsky <[email protected]>
2013-07-26s390: add support for IBM zBC12 machineHeiko Carstens4-4/+7
Just add the new model number where appropiate. Cc: [email protected] # v3.10 Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
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