RE: [PATCH 00/13] arm64: KVM: GICv3 ITS emulation

2015-06-07 Thread Pavel Fedin
Hello everybody! > The GICv3 ITS (Interrupt Translation Service) is a part of the > ARM GICv3 interrupt controller used for implementing MSIs. > It specifies a new kind of interrupts (LPIs), which are mapped to > establish a connection between a device, its MSI payload value and > the target proc

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2015-06-07 Thread Numberone Biotech Inc.
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Re: [PATCH 0/6] x86: reduce paravirtualized spinlock overhead

2015-06-07 Thread Juergen Gross
Ping? Anything missing from my side? On 04/30/2015 12:53 PM, Juergen Gross wrote: Paravirtualized spinlocks produce some overhead even if the kernel is running on bare metal. The main reason are the more complex locking and unlocking functions. Especially unlocking is no longer just one instruc

RE: [v3 24/26] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked

2015-06-07 Thread Wu, Feng
> -Original Message- > From: Marcelo Tosatti [mailto:mtosa...@redhat.com] > Sent: Saturday, June 06, 2015 5:59 AM > To: Wu, Feng > Cc: h...@zytor.com; t...@linutronix.de; mi...@redhat.com; x...@kernel.org; > g...@kernel.org; pbonz...@redhat.com; dw...@infradead.org; > j...@8bytes.org; ale

Re: [PATCH v2 09/11] KVM: arm: disable debug mode if we don't actually need it.

2015-06-07 Thread zichao
Hi, Will, On 2015/6/1 18:16, Will Deacon wrote: > On Sun, May 31, 2015 at 05:27:10AM +0100, Zhichao Huang wrote: >> Until now we enable debug mode all the time even if we don't >> actually need it. >> >> Inspired by the implementation in arm64, disable debug mode if >> we don't need it. And then w

Re: [PATCH v2 01/11] KVM: arm: plug guest debug exploit

2015-06-07 Thread zichao
Hi, Marc, On 2015/6/1 18:56, Marc Zyngier wrote: > Hi Zhichao, > > On 31/05/15 05:27, Zhichao Huang wrote: >> Hardware debugging in guests is not intercepted currently, it means >> that a malicious guest can bring down the entire machine by writing >> to the debug registers. >> >> This patch enab

[PATCH v5] i386: Introduce ARAT CPU feature

2015-06-07 Thread Jan Kiszka
From: Jan Kiszka ARAT signals that the APIC timer does not stop in power saving states. As our APICs are emulated, it's fine to expose this feature to guests, at least when asking for KVM host features or with CPU types that include the flag. The exact model number that introduced the feature is