- 24 Oct, 2010 40 commits
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Huang Ying authored
Now we have MCG_SER_P (and corresponding SRAO/SRAR MCE) support in kernel and QEMU-KVM, the MCG_SER_P should be added into KVM_MCE_CAP_SUPPORTED to make all these code really works. Reported-by:
Dean Nelson <dnelson@redhat.com> Signed-off-by:
Huang Ying <ying.huang@intel.com> Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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Nicolas Kaiser authored
Fix typo in copyright notice. Signed-off-by:
Nicolas Kaiser <nikai@nikai.net> Signed-off-by:
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Avi Kivity authored
get_kernel_ns() wants preemption disabled. It doesn't make a lot of sense during the get/set ioctls (no way to make them non-racy) but the callee wants it. Signed-off-by:Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Signed-off-by: -
Xiao Guangrong authored
Move access code parsing from caller site to FNAME(walk_addr) function Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
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Xiao Guangrong authored
After root synced, all unsync sps are synced, this patch add a check to make sure it's no unsync sps in VCPU's page table Signed-off-by:
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Xiao Guangrong authored
Introduce audit_printk, and record audit point instead audit name Signed-off-by:
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Xiao Guangrong authored
fix: Call Trace: [<ffffffffa01e46ba>] ? kvm_mmu_pte_write+0x229/0x911 [kvm] [<ffffffffa01c6ba9>] ? gfn_to_memslot+0x39/0xa0 [kvm] [<ffffffffa01c6c26>] ? mark_page_dirty+0x16/0x2e [kvm] [<ffffffffa01c6d6f>] ? kvm_write_guest_page+0x67/0x7f [kvm] [<ffffffff81066fbd>] ? local_clock+0x2a/0x3b [<ffffffffa01d52ce>] emulator_write_phys+0x46/0x54 [kvm] ...... Code: Bad RIP value. RIP [<ffffffffa0172056>] 0xffffffffa0172056 RSP <ffff880134f69a70> CR2: ffffffffa0172056 Signed-off-by:
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Xiao Guangrong authored
After nested nested paging, it may using long mode to shadow 32/PAE paging guest, so this patch fix it Signed-off-by:
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Xiao Guangrong authored
Set access bit while setup up direct page table if it's nonpaing or npt enabled, it's good for CPU's speculate access Signed-off-by:
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Xiao Guangrong authored
Small cleanup for set page fault error code Signed-off-by:
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Xiao Guangrong authored
The value of 'vcpu->arch.mmu.pae_root' is not modified, so we can update 'root_hpa' out of the loop. Signed-off-by:
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Sheng Yang authored
Eliminate: arch/x86/kvm/emulate.c:801: warning: ‘sv’ may be used uninitialized in this function on gcc 4.1.2 Signed-off-by:
Sheng Yang <sheng@linux.intel.com> Signed-off-by:
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Jan Kiszka authored
Older gcc versions complain about the improper type (for x86-32), 4.5 seems to fix this silently. However, we should better use the right type initially. Signed-off-by:
Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by:
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Jan Kiszka authored
By chance this caused no harm so far. We overwrite AX during switch to/from guest context, so we must declare this. Signed-off-by:
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Arjan Koers authored
Fix a hang during SMP kernel boot on KVM that showed up after commit 489fb490 (2.6.35) and 59aab522 (2.6.34.1). The problem only occurs when CONFIG_PRINTK_TIME is set. KVM-Stable-Tag. Signed-off-by:
Arjan Koers <0h61vkll2ly8@xutrox.com> Signed-off-by:
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Zachary Amsden authored
Negate the effects of AN TYM spell while kvm thread is preempted by tracking conversion factor to the highest TSC rate and catching the TSC up when it has fallen behind the kernel view of time. Note that once triggered, we don't turn off catchup mode. A slightly more clever version of this is possible, which only does catchup when TSC rate drops, and which specifically targets only CPUs with broken TSC, but since these all are considered unstable_tsc(), this patch covers all necessary cases. Signed-off-by:
Zachary Amsden <zamsden@redhat.com> Signed-off-by:
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Zachary Amsden authored
This just changes some names to better reflect the usage they will be given. Separated out to keep confusion to a minimum. Signed-off-by:
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Zachary Amsden authored
The math in kvm_get_time_scale relies on the fact that NSEC_PER_SEC < 2^32. To use the same function to compute arbitrary time scales, we must extend the first reduction step to shrink the base rate to a 32-bit value, and possibly reduce the scaled rate into a 32-bit as well. Note we must take care to avoid an arithmetic overflow when scaling up the tps32 value (this could not happen with the fixed scaled value of NSEC_PER_SEC, but can happen with scaled rates above 2^31. Signed-off-by:
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Avi Kivity authored
It doesn't really matter, but if we spin, we should spin in a more relaxed manner. This way, if something goes wrong at least it won't contribute to global warming. Signed-off-by:
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Avi Kivity authored
If an interrupt is pending, we need to stop emulation so we can inject it. Signed-off-by:
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Mohammed Gamal authored
Replace the inject-as-software-interrupt hack we currently have with emulated injection. Signed-off-by:
Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by:
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Mohammed Gamal authored
This adds a wrapper function kvm_inject_realmode_interrupt() around the emulator function emulate_int_real() to allow real mode interrupt injection. [avi: initialize operand and address sizes before emulating interrupts] [avi: initialize rip for real mode interrupt injection] [avi: clear interrupt pending flag after emulating interrupt injection] Signed-off-by:
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Mohammed Gamal authored
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Hillf Danton authored
It seems that rmap entries are under counted. Signed-off-by:
Hillf Danton <dhillf@gmail.com> Signed-off-by:
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Xiao Guangrong authored
Document this parameter into Documentation/kernel-parameters.txt Signed-off-by:
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Xiao Guangrong authored
The default state of 'kvm-amd.nested' is enabled now, so fix the documentation Signed-off-by:
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Gleb Natapov authored
Nested SVM checks for external interrupt after injecting nested exception. In case there is external interrupt pending the code generates "external interrupt exit" and overwrites previous exit info. If previously injected exception already generated exit it will be lost. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Acked-by:
Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:
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Avi Kivity authored
The PIC code used to be called from preempt_disable() context, which wasn't very good for PREEMPT_RT. That is no longer the case, so move back from raw_spinlock_t to spinlock_t. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Zachary Amsden authored
If preempted after kvmclock values are updated, but before hardware virtualization is entered, the last tsc time as read by the guest is never set. It underflows the next time kvmclock is updated if there has not yet been a successful entry / exit into hardware virt. Fix this by simply setting last_tsc to the newly read tsc value so that any computed nsec advance of kvmclock is nulled. Signed-off-by:
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Joerg Roedel authored
This patch moves the detection whether a page-fault was nested or not out of the error code and moves it into a separate variable in the fault struct. Signed-off-by:
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Avi Kivity authored
No code changes. Signed-off-by: -
Avi Kivity authored
Change the interrupt injection code to work from preemptible, interrupts enabled context. This works by adding a ->cancel_injection() operation that undoes an injection in case we were not able to actually enter the guest (this condition could never happen with atomic injection). Signed-off-by: -
Avi Kivity authored
Currently vmx_complete_interrupts() can decode event information from vmx exit fields into the generic kvm event queues. Make it able to decode the information from the entry fields as well by parametrizing it. Signed-off-by: -
Avi Kivity authored
This allows reuse of vmx_complete_interrupts() for cancelling injections. Signed-off-by: -
Avi Kivity authored
vmx_complete_interrupts() does too much, split it up: - vmx_vcpu_run() gets the "cache important vmcs fields" part - a new vmx_complete_atomic_exit() gets the parts that must be done atomically - a new vmx_recover_nmi_blocking() does what its name says - vmx_complete_interrupts() retains the event injection recovery code This helps in reducing the work done in atomic context. Signed-off-by: -
Avi Kivity authored
Instead of blindly attempting to inject an event before each guest entry, check for a possible event first in vcpu->requests. Sites that can trigger event injection are modified to set KVM_REQ_EVENT: - interrupt, nmi window opening - ppr updates - i8259 output changes - local apic irr changes - rflags updates - gif flag set - event set on exit This improves non-injecting entry performance, and sets the stage for non-atomic injection. Signed-off-by: -
Avi Kivity authored
Commit "KVM: MMU: Make tdp_enabled a mmu-context parameter" made real-mode set ->direct_map, and changed the code that merges in the memory type depend on direct_map instead of tdp_enabled. However, in this case what really matters is tdp, not direct_map, since tdp changes the pte format regardless of whether the mapping is direct or not. As a result, real-mode shadow mappings got corrupted with ept memory types. The result was a huge slowdown, likely due to the cache being disabled. Change it back as the simplest fix for the regression (real fix is to move all that to vmx code, and not use tdp_enabled as a synonym for ept). Signed-off-by: -
Avi Kivity authored
Signed-off-by: -
Joerg Roedel authored
This patch fixes a bug in KVM where it _always_ reports the support of the SVM feature to userspace. But KVM only supports SVM on AMD hardware and only when it is enabled in the kernel module. This patch fixes the wrong reporting. Cc: stable@kernel.org Signed-off-by:
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