From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754228AbbFOJAJ (ORCPT ); Mon, 15 Jun 2015 05:00:09 -0400 Received: from mga09.intel.com ([134.134.136.24]:31044 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754125AbbFOJAD (ORCPT ); Mon, 15 Jun 2015 05:00:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,617,1427785200"; d="scan'208";a="508416749" From: Xiao Guangrong To: pbonzini@redhat.com Cc: gleb@kernel.org, mtosatti@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, dmatlack@google.com, Xiao Guangrong Subject: [PATCH v2 00/15] vMTRR bugfix and optimization Date: Mon, 15 Jun 2015 16:55:20 +0800 Message-Id: <1434358535-19923-1-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 2.1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changlog: - let's fix the bugs for noncoherent_dma guests first - these changes are from Paolo's review 1) use inline functions instead of union definition for 'struct kvm_mtrr' 2) improve code style 3) fix fixed_msr_to_range_index which does not return the actual value 4) introduce kvm_set_var_mtrr() to make the code more clearer 5) improve mtrr_for_each_mem_type() APIs and clean it up 6) drop @unit_size in 'struct fixed_mtrr_segment' - these changes are from David Matlack's review 1) improve comment 2) fix fixed_mtrr_range_end_addr that did not count entries correctly There are some bugs in current code if noncoherent_dma is detected: - KVM still uses hugepage even if the 4K pages in that ranges span between on different memory types and uses the cache type of first page to do memory mapping - CR0.CD is not checked so that guest memory is not UC as it expected This patchset fixes these bugs and also do optimization and cleanups. Xiao Guangrong (15): KVM: x86: fix CR0.CD virtualization KVM: x86: move MTRR related code to a separate file KVM: MTRR: handle MSR_MTRRcap in kvm_mtrr_get_msr KVM: MTRR: remove mtrr_state.have_fixed KVM: MTRR: exactly define the size of variable MTRRs KVM: MTRR: clean up mtrr default type KVM: MTRR: do not split 64 bits MSR content KVM: MTRR: improve kvm_mtrr_get_guest_memory_type KVM: MTRR: introduce fixed_mtrr_segment table KVM: MTRR: introduce var_mtrr_range KVM: MTRR: sort variable MTRRs KVM: MTRR: introduce fixed_mtrr_addr_* functions KVM: MTRR: introduce mtrr_for_each_mem_type KVM: MTRR: simplify kvm_mtrr_get_guest_memory_type KVM: MTRR: do not map huage page for non-consistent range arch/x86/include/asm/kvm_host.h | 17 +- arch/x86/kvm/Makefile | 2 +- arch/x86/kvm/mmu.c | 123 ++----- arch/x86/kvm/mtrr.c | 708 ++++++++++++++++++++++++++++++++++++++++ arch/x86/kvm/vmx.c | 32 +- arch/x86/kvm/x86.c | 223 +------------ arch/x86/kvm/x86.h | 6 + 7 files changed, 778 insertions(+), 333 deletions(-) create mode 100644 arch/x86/kvm/mtrr.c -- 2.1.0