From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mario Smarduch Date: Thu, 30 Oct 2014 19:19:00 +0000 Subject: Re: [PATCH v12 2/6] KVM: Add generic support for dirty page logging Message-Id: <54528F24.6060602@samsung.com> List-Id: References: <1414017251-5772-3-git-send-email-m.smarduch@samsung.com> In-Reply-To: <1414017251-5772-3-git-send-email-m.smarduch@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: kvm-ia64@vger.kernel.org On 10/30/2014 05:14 AM, Cornelia Huck wrote: > On Wed, 22 Oct 2014 15:34:07 -0700 > Mario Smarduch wrote: > >> This patch defines KVM_GENERIC_DIRTYLOG, and moves dirty log read function >> to it's own file virt/kvm/dirtylog.c. x86 is updated to use the generic >> dirty log interface, selecting KVM_GENERIC_DIRTYLOG in its Kconfig and >> makefile. No other architectures are affected, each uses it's own version. >> This changed from previous patch revision where non-generic architectures >> were modified. >> >> In subsequent patch armv7 does samething. All other architectures continue >> use architecture defined version. >> > > Hm. > > "The x86 specific version of dirty page logging is generic enough to be > used by other architectures, noteably ARMv7. So let's move the x86 code > under virt/kvm/ and make it depend on KVM_GENERIC_DIRTYLOG. Other > architectures continue to use their own implementations." > > ? I'll update descriptions for both patches, with the more concise descriptions. Thanks. > >> >> Signed-off-by: Mario Smarduch >> --- >> arch/x86/include/asm/kvm_host.h | 3 -- >> arch/x86/kvm/Kconfig | 1 + >> arch/x86/kvm/Makefile | 1 + >> arch/x86/kvm/x86.c | 86 ------------------------------ >> include/linux/kvm_host.h | 4 ++ >> virt/kvm/Kconfig | 3 ++ >> virt/kvm/dirtylog.c | 112 +++++++++++++++++++++++++++++++++++++++ >> 7 files changed, 121 insertions(+), 89 deletions(-) >> create mode 100644 virt/kvm/dirtylog.c >> > >> diff --git a/virt/kvm/dirtylog.c b/virt/kvm/dirtylog.c >> new file mode 100644 >> index 0000000..67ffffa >> --- /dev/null >> +++ b/virt/kvm/dirtylog.c >> @@ -0,0 +1,112 @@ >> +/* >> + * kvm generic dirty logging support, used by architectures that share >> + * comman dirty page logging implementation. > > s/comman/common/ > > The approach looks sane to me, especially as it does not change other > architectures needlessly. >