How does the latest Intel flaw relate to CentOS 6.x systems that run under VirtualBox hosted on Windows 7 computers? Given the virtual machine degree of separation from the hardware, can this issue actually be detected and exploited in the operating systems that run virtually?? If there is a slow down associated with the fix, how much might it impact the virtual systems?
-----Original Message----- From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Chris Olson Subject: [CentOS] Intel Flaw>How does the latest Intel flaw relate to CentOS 6.x systems that run under VirtualBox > hosted on Windows 7 computers?My computer is an much older AMD Athlon X2-250, 3.0ghz dual core, 02-2012 Windows 10 Pro (15063.850) I just manually patched my system w/ the security only update from Microsoft. Used the Pass Mark CPU test... Before patch 1626, 1323 after patch or an 18.6% loss in speed. Looking for a better test utility for Linux, but on my tested Linux boxen, doesn't seem to be any change.... But I'm using sysbench. Probably not the best utility in this case. Regards, Richard Zimmerman River Bend Hose Specialty, Inc.
On 5 January 2018 at 12:53, Chris Olson <chris_e_olson at yahoo.com> wrote:> How does the latest Intel flaw relate to CentOS 6.x systems > that run under VirtualBox hosted on Windows 7 computers? Given > the virtual machine degree of separation from the hardware, canSupposedly a virtual machine can detect and leak out in various ways. Both Xen and qemu are working through patches to deal with this. Other virtual software vendors are probably working on this also. I am not sure why the patches to the operating system do not stop this but it seems to do with how the modern CPU does virtualization which makes the Windows 7 patches not applicable.> this issue actually be detected and exploited in the operating > systems that run virtually? If there is a slow down associated > with the fix, how much might it impact the virtual systems? > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos-- Stephen J Smoogen.