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(parent: 750fb62) | patch
kaiser: disabled on Xen PV
authorJiri Kosina <jkosina@suse.cz>
Tue, 2 Jan 2018 13:19:49 +0000 (14:19 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 5 Jan 2018 14:44:26 +0000 (15:44 +0100)
commite4ba212ec64109b17fb8653ccfa2ed2c6e3e8217
treee55c525d53c118912bab67e116c8cfa6859dc9dbtree | snapshot (tar.gz zip)
parent750fb627d764eb66430c36961b94ab0002694c02commit | diff
kaiser: disabled on Xen PV

Kaiser cannot be used on paravirtualized MMUs (namely reading and writing CR3).
This does not work with KAISER as the CR3 switch from and to user space PGD
would require to map the whole XEN_PV machinery into both.

More importantly, enabling KAISER on Xen PV doesn't make too much sense, as PV
guests use distinct %cr3 values for kernel and user already.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/mm/kaiser.c diff | blob | blame | history