- 12 6月, 2009 8 次提交
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由 David Howells 提交于
Add utrace/tracehooks support to MN10300. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Remove the special handling for the Data TLB entry dirty bit in the TLB-miss handler. As the code stands, all that it does is to cause us to take a second data address exception to set the dirty bit. Instead, we can just let pte_mkdirty() set the bit. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Implement the new-style ptrace for FRV, including adding appropriate tracehooks. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Don't turn on TIF_SYSCALL_TRACE unconditionally in syscall prologue in FRV's entry.S. This was originally for debugging stuff and should have been removed a long time ago. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Implement the TIF_NOTIFY_RESUME thread flag, making it call do_notify_resume() which then clears it. This will be made use of later by tracehooks in the new-style ptrace implementation Also discard TIF_IRET as that's not used by FRV. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Remove in-kernel strace code from the FRV arch as it's not really needed any more. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Stoyan Gaydarov 提交于
Change some BUG()'s to BUG_ON()'s. Signed-off-by: NStoyan Gaydarov <stoyboyker@gmail.com> Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Justin Chen 提交于
Change the index to unsigned long in all bitops for [frv] Signed-off-by: NJustin Chen <justin.chen@hp.com> Reviewed-by: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 11 6月, 2009 5 次提交
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由 Fabian Godehardt 提交于
Using the iMX serial driver with an IrDA device needs extra peripheral settings and specific timing depending on the transmitter circuitry used. Signed-off-by: NFabian Godehardt <fg@emlix.com> Signed-off-by: NOskar Schirmer <os@emlix.com> Signed-off-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Arnd Bergmann 提交于
The legacy TCSETA{,W,F} ioctls failed to set the termio->c_line field on x86. This adds a missing get_user. The same ioctls also fail to report faulting user pointers, which we keep ignoring. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ingo Molnar 提交于
This reverts commit 7e0bfad2. A late objection to the ABI has arrived: http://lkml.org/lkml/2009/6/10/253 Keep the ABI disabled out of caution, to not create premature user-space expectations. While the hw-branch-tracing variant uses and tests the BTS code. Cc: Peter Zijlstra <peterz@infradead.org> Cc: Markus Metzger <markus.t.metzger@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Harald Welte 提交于
The e_powersaver driver for VIA's C7 CPU's needs to be marked as DANGEROUS as it configures the CPU to power states that are out of specification. According to Centaur, all systems with C7 and Nano CPU's support the ACPI p-state method. Thus, the acpi-cpufreq driver should be used instead. Signed-off-by: NHarald Welte <HaraldWelte@viatech.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Harald Welte 提交于
The VIA/Centaur C7, C7-M and Nano CPU's all support ACPI based cpu p-states using a MSR interface. The Linux driver just never made use of it, since in addition to the check for the EST flag it also checked if the vendor is Intel. Signed-off-by: NHarald Welte <HaraldWelte@viatech.com> [ Removed the vendor checks entirely - Linus ] Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 10 6月, 2009 27 次提交
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由 Andi Kleen 提交于
VT-x needs an explicit MC vector intercept to handle machine checks in the hyper visor. It also has a special option to catch machine checks that happen during VT entry. Do these interceptions and forward them to the Linux machine check handler. Make it always look like user space is interrupted because the machine check handler treats kernel/user space differently. Thanks to Jiang Yunhong for help and testing. Cc: stable@kernel.org Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NHuang Ying <ying.huang@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Nitin A Kamble 提交于
That way the interpretation of rmode.active becomes more clear with unrestricted guest code. Signed-off-by: NNitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
To save us one reading of VM_EXIT_INTR_INFO. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
INTn will be re-executed after migration. If we wanted to migrate pending software interrupt we would need to migrate interrupt type and instruction length too, but we do not have all required info on SVM, so SVM->VMX migration would need to re-execute INTn anyway. To make it simple never migrate pending soft interrupt. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
If NMI is received during handling of another NMI it should be injected immediately after IRET from previous NMI handler, but SVM intercept IRET before instruction execution so we can't inject pending NMI at this point and there is not way to request exit when NMI window opens. This patch fix SVM code to open NMI window after IRET by single stepping over IRET instruction. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Currently they are not requested if there is pending exception. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Re-inject event instead. This is what Intel suggest. Also use correct instruction length when re-injecting soft fault/interrupt. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Only one interrupt vector can be injected from userspace irqchip at any given time so no need to store it in a bitmap. Put it into interrupt queue directly. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
The exception will immediately close the interrupt window. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
It is done for exception and interrupt already. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Carsten Otte 提交于
This check verifies that the guest we're trying to run in KVM_RUN has some memory assigned to it. It enters an endless exception loop if this is not the case. Reported-by: NMijo Safradin <mijo@linux.vnet.ibm.com> Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NChristian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Carsten Otte 提交于
This patch adds a sanity check for the content of the guest prefix register content before faulting in the cpu lowcore that it refers to. The guest might end up in an endless loop where SIE complains about missing lowcore with incorrect content of the prefix register without this fix. Reported-by: NMijo Safradin <mijo@linux.vnet.ibm.com> Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NChristian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Carsten Otte 提交于
This patch makes sure we do unlink a vcpu's sie control block from the system control area in kvm_arch_vcpu_destroy. This prevents illegal accesses to the sie control block from other virtual cpus after free. Reported-by: NMijo Safradin <mijo@linux.vnet.ibm.com> Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NChristian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Christian Borntraeger 提交于
The floating interrupt lock is only taken in process context. We can replace all spin_lock_bh with standard spin_lock calls. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NChristian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Christian Borntraeger 提交于
This patch reworks the s390 clock comparator wakeup to hrtimer. The clock comparator is a per-cpu value that is compared against the TOD clock. If ckc <= TOD an external interrupt 1004 is triggered. Since the clock comparator and the TOD clock have a much higher resolution than jiffies we should use hrtimers to trigger the wakeup. This speeds up guest nanosleep for small values. Since hrtimers callbacks run in hard-irq context, I added a tasklet to do the actual work with enabled interrupts. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NChristian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Carsten Otte 提交于
This patch fixes an incorrectness in the kvm backend for s390. In case virtual cpus are being created before the corresponding memory slot is being registered, we need to update the sie control blocks for the virtual cpus. *updates in v3* In consideration of the s390 memslot constraints locking was changed to trylock. These locks should never be held, as vcpu's can't run without the single memslot we just assign when running this code. To ensure this never deadlocks in case other code changes the code uses trylocks and bail out if it can't get all locks. Additionally most of the discussed special conditions for s390 like only one memslot and no user_alloc are now checked for validity in kvm_arch_set_memory_region. Reported-by: NMijo Safradin <mijo@linux.vnet.ibm.com> Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NChristian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Robert P. J. Day 提交于
Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Cc: Avi Kivity <avi@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Verify the cr3 address stored in vcpu->arch.cr3 points to an existant memslot. If not, inject a triple fault. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
kvm_handle_hva, called by MMU notifiers, manipulates mmu data only with the protection of mmu_lock. Update kvm_mmu_change_mmu_pages callers to take mmu_lock, thus protecting against kvm_handle_hva. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Glauber Costa 提交于
We currently unblock shadow interrupt state when we skip an instruction, but failing to do so when we actually emulate one. This blocks interrupts in key instruction blocks, in particular sti; hlt; sequences If the instruction emulated is an sti, we have to block shadow interrupts. The same goes for mov ss. pop ss also needs it, but we don't currently emulate it. Without this patch, I cannot boot gpxe option roms at vmx machines. This is described at https://bugzilla.redhat.com/show_bug.cgi?id=494469Signed-off-by: NGlauber Costa <glommer@redhat.com> CC: H. Peter Anvin <hpa@zytor.com> CC: Gleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Glauber Costa 提交于
This patch replaces drop_interrupt_shadow with the more general set_interrupt_shadow, that can either drop or raise it, depending on its parameter. It also adds ->get_interrupt_shadow() for future use. Signed-off-by: NGlauber Costa <glommer@redhat.com> CC: H. Peter Anvin <hpa@zytor.com> CC: Gleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
KVM uses a function call IPI to cause the exit of a guest running on a physical cpu. For virtual interrupt notification there is no need to wait on IPI receival, or to execute any function. This is exactly what the reschedule IPI does, without the overhead of function IPI. So use it instead of smp_call_function_single in kvm_vcpu_kick. Also change the "guest_mode" variable to a bit in vcpu->requests, and use that to collapse multiple IPI's that would be issued between the first one and zeroing of guest mode. This allows kvm_vcpu_kick to called with interrupts disabled. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Add cpu feature bit support for the MOVBE and POPCNT instructions. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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