- 04 12月, 2009 1 次提交
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由 Kevin Wolf 提交于
We're leaking file descriptors to child processes. Set FD_CLOEXEC on file descriptors that don't need to be passed to children to stop this misbehaviour. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 17 11月, 2009 1 次提交
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由 Jan Kiszka 提交于
Will be required by succeeding changes. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 13 11月, 2009 1 次提交
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由 Hollis Blanchard 提交于
Unbreaks PowerPC and S390 KVM builds. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 12 10月, 2009 1 次提交
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由 Glauber Costa 提交于
Without this, kvm will hold the mutex while it issues its run ioctl, and never be able to step out of it, causing a deadlock. Patchworks-ID: 35359 Signed-off-by: NGlauber Costa <glommer@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 05 10月, 2009 2 次提交
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由 Glauber Costa 提交于
Recent changes made on_vcpu hit the abort() path, even with the IO thread disabled. This is because cpu_single_env is no longer set when we call this function. Although the correct fix is a little bit more complicated that that, the recent thread in which I proposed qemu_queue_work (which fixes that, btw), is likely to go on a quite different direction. So for the benefit of those using guest debugging, I'm proposing this simple fix in the interim. Signed-off-by: NGlauber Costa <glommer@redhat.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
Hopefully the last regression of 4c0960c0: KVM_SET_GUEST_DEBUG requires properly synchronized guest registers (on x86: eflags) on entry. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 02 10月, 2009 2 次提交
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由 Anthony Liguori 提交于
In the very least, a change like this requires discussion on the list. The naming convention is goofy and it causes a massive merge problem. Something like this _must_ be presented on the list first so people can provide input and cope with it. This reverts commit 99a0949b. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 malc 提交于
Some not so obvious bits, slirp and Xen were left alone for the time being. Signed-off-by: Nmalc <av1474@comtv.ru>
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- 21 9月, 2009 1 次提交
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由 Blue Swirl 提交于
The CPU state parameter is not used, remove it and adjust callers. Now we can compile ioport.c once for all targets. Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 12 9月, 2009 1 次提交
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由 Blue Swirl 提交于
Problem: Our file sys-queue.h is a copy of the BSD file, but there are some additions and it's not entirely compatible. Because of that, there have been conflicts with system headers on BSD systems. Some hacks have been introduced in the commits 15cc9235, f40d7537, 96555a96 and 3990d09a but the fixes were fragile. Solution: Avoid the conflict entirely by renaming the functions and the file. Revert the previous hacks. Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 28 8月, 2009 1 次提交
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由 Avi Kivity 提交于
cpu_synchronize_state() is a little unreadable since the 'modified' argument isn't self-explanatory. Simplify it by making it always synchronize the kernel state into qemu, and automatically flush the registers back to the kernel if they've been synchronized on this exit. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 28 7月, 2009 4 次提交
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由 Anthony Liguori 提交于
This reverts commit bd836776. PPC should just implement dirty logging so we can avoid all the fall-out from this changeset. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Luiz Capitulino 提交于
The only caller of on_vcpu() is protected by ifdef KVM_CAP_SET_GUEST_DEBUG, so protect on_vcpu() too otherwise QEMU may not to build. Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Alexander Graf 提交于
We currently use host endian long types to store information in the dirty bitmap. This works reasonably well on Little Endian targets, because the u32 after the first contains the next 32 bits. On Big Endian this breaks completely though, forcing us to be inventive here. So Ben suggested to always use Little Endian, which looks reasonable. We only have dirty bitmap implemented in Little Endian targets so far and since PowerPC would be the first Big Endian platform, we can just as well switch to Little Endian always with little effort without breaking existing targets. This is the userspace part of the patch. It shouldn't change anything for existing targets, but help PowerPC. It replaces my older patch called "Use 64bit pointer for dirty log". Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Alexander Graf 提交于
Dirty logs currently get written with native "long" size. On little endian it doesn't matter if we use uint64_t instead though, because we'd still end up using the right bytes. On big endian, this does become a bigger problem, so we need to ensure that kernel and userspace talk the same language, which means getting rid of "long" and using a defined size instead. So I decided to use 64 bit types at all times. This doesn't break existing targets but will in conjunction with a patch I'll send to the KVM ML make dirty logs work with 32 bit userspace on 64 kernel with big endian. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 22 7月, 2009 4 次提交
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由 Glauber Costa 提交于
KVM can have an in-kernel pit or irqchip. While we don't implement it yet, having a way for test for it (that always returns zero) will allow us to reuse code in qemu-kvm that tests for it. Signed-off-by: NGlauber Costa <glommer@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Glauber Costa 提交于
on_vcpu is a qemu-kvm function that will make sure that a specific piece of code will run on a requested cpu. We don't need that because we're restricted to -smp 1 right now, but those days are likely to end soon. So for the benefit of having qemu-kvm share more code with us, I'm introducing our own version of on_vcpu(). Right now, we either run a function on the current cpu, or abort the execution, because it would mean something is seriously wrong. As an example code, I "ported" kvm_update_guest_debug to use it, with some slight differences from qemu-kvm. This is probably 0.12 material Signed-off-by: NGlauber Costa <glommer@redhat.com> CC: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Alexander Graf 提交于
Some KVM platforms don't support dirty logging yet, like IA64 and PPC, so in order to still have screen updates on those, we need to fake it. This patch just tells the getter function for dirty bitmaps, that all pages within a slot are dirty when the slot has dirty logging enabled. That way we can implement dirty logging on those platforms sometime when it drags down performance, but share the rest of the code with dirty logging capable platforms. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Alexander Graf 提交于
This fixes a warning I stumbled across while compiling qemu on PPC64. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 30 6月, 2009 2 次提交
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由 Jan Kiszka 提交于
This reverts commit 8217606e (and updates later added users of qemu_register_reset), we solved the problem it originally addressed less invasively. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
During startup and after reset we have to synchronize user space to the in-kernel KVM state. Namely, we need to transfer the VCPU registers when they change due to VCPU as well as APIC reset. This patch refactors the required hooks so that kvm_init_vcpu registers its own per-VCPU reset handler and adds a cpu_synchronize_state to the APIC reset. That way we no longer depend on the new reset order (and can drop this disliked interface again) and we can even drop a KVM hook in main(). Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 17 6月, 2009 1 次提交
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由 Jan Kiszka 提交于
User space may only inject interrupts during kvm_arch_pre_run if ready_for_interrupt_injection is set in kvm_run. But that field is updated on exit from KVM_RUN, so we must ensure that we enter the kernel after potentially queuing an interrupt, otherwise we risk to loose one - like it happens with the current code against latest kernel modules (since kvm-86) that started to queue only a single interrupt. Fix the problem by reordering kvm_cpu_exec. Credits go to Gleb Natapov for analyzing the issue in details. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 07 6月, 2009 1 次提交
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由 Jan Kiszka 提交于
Users complained that it is not obvious what to do when kvm refuses to build or run due to an unsupported host kernel, so let's improve the hints. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
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- 22 5月, 2009 6 次提交
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由 Jan Kiszka 提交于
Save and restore all so far neglected KVM-specific CPU states. Handling the TSC stabilizes migration in KVM mode. The interrupt_bitmap and mp_state are currently unused, but will become relevant for in-kernel irqchip support. By including proper saving/restoring already, we avoid having to increment CPU_SAVE_VERSION later on once again. v2: - initialize mp_state runnable (for the boot CPU) Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
Use standard callback with highest order to synchronize VCPU on reset after all device callbacks were execute. This allows to remove the special kvm hook in qemu_system_reset. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
Extend kvm_physical_sync_dirty_bitmap() so that is can sync across multiple slots. Useful for updating the whole dirty log during migration. Moreover, properly pass down errors the whole call chain. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
The buffer passed to KVM_GET_DIRTY_LOG requires one bit per page. Fix the size calculation in kvm_physical_sync_dirty_bitmap accordingly, avoiding allocation of extremly oversized buffers. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
Introduce a global dirty logging flag that enforces logging for all slots. This can be used by the live migration code to enable/disable global logging withouth destroying the per-slot setting. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
Only apply the workaround for broken slot joining in KVM when the capability was not found that signals the corresponding fix existence. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 20 5月, 2009 1 次提交
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由 Mark McLoughlin 提交于
Right now, if you try e.g. '-smp 2' you just get 'failed to initialize KVM'. Signed-off-by: NMark McLoughlin <markmc@redhat.com>
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- 09 5月, 2009 1 次提交
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由 Anthony Liguori 提交于
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 01 5月, 2009 2 次提交
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由 Jan Kiszka 提交于
Avi Kivity wrote: > Suggest wrapping in a function and hiding it deep inside kvm-all.c. > Done in v2: ----------> If the KVM MMU is asynchronous (kernel does not support MMU_NOTIFIER), we have to avoid COW for the guest memory. Otherwise we risk serious breakage when guest pages change there physical locations due to COW after fork. Seen when forking smbd during runtime via -smb. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jan Kiszka 提交于
There is no need to reject an unaligned memory region registration if the region will be I/O memory and it will not split an existing KVM slot. This fixes KVM support on PPC. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 17 4月, 2009 3 次提交
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由 aliguori 提交于
This reworks the slot management to handle more patterns of cpu_register_physical_memory*, finally allowing to reset KVM guests (so far address remapping on reset broke the slot management). We could actually handle all possible ones without failing, but a KVM kernel bug in older versions would force us to track all previous fragmentations and maintain them (as that bug prevents registering larger slots that overlap also deleted ones). To remain backward compatible but avoid overly complicated workarounds, we apply a simpler workaround that covers all currently used patterns. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7139 c046a42c-6fe2-441c-8c8c-71466251a162
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由 aliguori 提交于
Fail loudly if we run out of memory slot. Make sure that dirty log start/stop works with consistent memory regions by reporting invalid parameters. This reveals several inconsistencies in the vga code, patch to fix them follows later in this series. And, for simplicity reasons, also catch and report unaligned memory regions passed to kvm_set_phys_mem (KVM works on page basis). Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7138 c046a42c-6fe2-441c-8c8c-71466251a162
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由 aliguori 提交于
Testing for TLB_MMIO on unmap makes no sense as A) that flag belongs to CPUTLBEntry and not to io_memory slots or physical addresses and B) we already use a different condition before mapping. So make this test consistent. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7137 c046a42c-6fe2-441c-8c8c-71466251a162
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- 11 4月, 2009 1 次提交
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由 pbrook 提交于
Signed-off-by: NPaul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7085 c046a42c-6fe2-441c-8c8c-71466251a162
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- 13 3月, 2009 1 次提交
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由 aliguori 提交于
This is a backport of the guest debugging support for the KVM accelerator that is now part of the KVM tree. It implements the reworked KVM kernel API for guest debugging (KVM_CAP_SET_GUEST_DEBUG) which is not yet part of any mainline kernel but will probably be 2.6.30 stuff. So far supported is x86, but PPC is expected to catch up soon. Core features are: - unlimited soft-breakpoints via code patching - hardware-assisted x86 breakpoints and watchpoints Changes in this version: - use generic hook cpu_synchronize_state to transfer registers between user space and kvm - push kvm_sw_breakpoints into KVMState Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6825 c046a42c-6fe2-441c-8c8c-71466251a162
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- 07 3月, 2009 1 次提交
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由 aurel32 提交于
env->interrupt_request is accessed as the bit level from both main code and signal handler, making a race condition possible even on CISC CPU. This causes freeze of QEMU under high load when running the dyntick clock. The patch below move the bit corresponding to CPU_INTERRUPT_EXIT in a separate variable, declared as volatile sig_atomic_t, so it should be work even on RISC CPU. We may want to move the cpu_interrupt(env, CPU_INTERRUPT_EXIT) case in its own function and get rid of CPU_INTERRUPT_EXIT. That can be done later, I wanted to keep the patch short for easier review. Signed-off-by: NAurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6728 c046a42c-6fe2-441c-8c8c-71466251a162
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- 06 2月, 2009 1 次提交
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由 aliguori 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6531 c046a42c-6fe2-441c-8c8c-71466251a162
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