On Fri, Sep 14, 2018 at 08:19:27PM +0200, Greg Kroah-Hartman wrote:
On Fri, Sep 14, 2018 at 10:12:22AM -0700, Eduardo Valentin wrote:
Hello,
On Thu, Sep 13, 2018 at 03:32:03PM +0200, Greg Kroah-Hartman wrote:
4.14-stable review patch. If anyone has any objections, please let me know.
From: Juergen Gross jgross@suse.com
commit f7c90c2aa4004808dff777ba6ae2c7294dd06851 upstream.
In some cases 32-bit PAE PV guests still write PTEs directly instead of using hypercalls. This is especially bad when clearing a PTE as this is done via 32-bit writes which will produce intermediate L1TF attackable PTEs.
Change the code to use hypercalls instead.
Good that we got this in. Should we also take this one: b2d7a075a1cc ("x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear")
Which is under the line of the same issue?
It's also in this patch series, the very next one in fact :)
Cool! Missed that. Sorry for the noise.
Thanks for including the patches!
thanks,
greg k-h