From: Gleb Natapov <gleb@redhat.com>
To: Jan Kiszka <jan.kiszka@web.de>
Cc: kvm@vger.kernel.org,
Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>,
Jun Nakajima <jun.nakajima@intel.com>,
Yang Zhang <yang.z.zhang@intel.com>,
pbonzini@redhat.com
Subject: Re: [PATCH v6 00/15] Nested EPT
Date: Sun, 4 Aug 2013 12:32:06 +0300 [thread overview]
Message-ID: <20130804093205.GJ6042@redhat.com> (raw)
In-Reply-To: <51FE1DD9.80904@web.de>
On Sun, Aug 04, 2013 at 11:24:41AM +0200, Jan Kiszka wrote:
> On 2013-08-01 16:08, Gleb Natapov wrote:
> > Another day -- another version of the nested EPT patches. In this version
> > included fix for need_remote_flush() with shadowed ept, set bits 6:8
> > of exit_qualification during ept_violation, update_permission_bitmask()
> > made to work with shadowed ept pages and other small adjustment according
> > to review comments.
>
> Was just testing it here and ran into a bug: I've L2 accessing the HPET
> MMIO region that my L1 passed through from L0 (where it is supposed to
> be emulated in this setup). This used to work with an older posting of
Not sure I understand your setup. L0 emulates HPET, L1 passes it through
to L2 (mmaps it and creates kvm slot that points to it) and when L2
accessed it it locks up?
> Jun, but now it locks up (infinite loop over L2's MMIO access, no L2->L1
> transition). Any ideas where to look for debugging this?
>
Can you do an ftrace -e kvm -e kvmmmu? Unit test will also be helpful :)
--
Gleb.
next prev parent reply other threads:[~2013-08-04 9:33 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-01 14:08 [PATCH v6 00/15] Nested EPT Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 01/15] nEPT: Support LOAD_IA32_EFER entry/exit controls for L1 Gleb Natapov
2013-08-02 3:04 ` Zhang, Yang Z
2013-08-02 6:35 ` Jan Kiszka
2013-08-02 7:27 ` Zhang, Yang Z
2013-08-02 7:33 ` Jan Kiszka
2013-08-01 14:08 ` [PATCH v6 02/15] nEPT: Fix cr3 handling in nested exit and entry Gleb Natapov
2013-08-02 9:23 ` Xiao Guangrong
2013-08-01 14:08 ` [PATCH v6 03/15] nEPT: Fix wrong test in kvm_set_cr3 Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 04/15] nEPT: Move common code to paging_tmpl.h Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 05/15] nEPT: make guest's A/D bits depends on guest's paging mode Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 06/15] nEPT: Support shadow paging for guest paging without A/D bits Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 07/15] nEPT: Add EPT tables support to paging_tmpl.h Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 08/15] nEPT: Redefine EPT-specific link_shadow_page() Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 09/15] nEPT: correctly check if remote tlb flush is needed for shadowed EPT tables Gleb Natapov
2013-08-02 5:58 ` Xiao Guangrong
2013-08-01 14:08 ` [PATCH v6 10/15] nEPT: Nested INVEPT Gleb Natapov
2013-08-02 8:06 ` Xiao Guangrong
2013-08-02 10:00 ` Gleb Natapov
2013-08-01 14:08 ` [PATCH v6 11/15] nEPT: Add nEPT violation/misconfigration support Gleb Natapov
2013-08-02 6:12 ` Xiao Guangrong
2013-08-01 14:08 ` [PATCH v6 12/15] nEPT: MMU context for nested EPT Gleb Natapov
2013-08-02 6:13 ` Xiao Guangrong
2013-08-01 14:08 ` [PATCH v6 13/15] nEPT: Advertise EPT to L1 Gleb Natapov
2013-08-02 8:29 ` Xiao Guangrong
2013-08-01 14:08 ` [PATCH v6 14/15] nEPT: Some additional comments Gleb Natapov
2013-08-02 6:26 ` Xiao Guangrong
2013-08-01 14:08 ` [PATCH v6 15/15] nEPT: Miscelleneous cleanups Gleb Natapov
2013-08-02 6:45 ` Xiao Guangrong
2013-08-04 9:24 ` [PATCH v6 00/15] Nested EPT Jan Kiszka
2013-08-04 9:32 ` Gleb Natapov [this message]
2013-08-04 9:53 ` Gleb Natapov
2013-08-04 13:44 ` Gleb Natapov
2013-08-04 15:14 ` Jan Kiszka
2013-08-04 16:15 ` Xiao Guangrong
2013-08-04 16:42 ` Jan Kiszka
2013-08-04 16:58 ` Gleb Natapov
2013-08-04 17:19 ` Xiao Guangrong
2013-08-04 17:24 ` Gleb Natapov
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