search for: pgstes

...cess to reserve space in the page table: s390_enable_sie makes sure that the process is single threaded and then uses dup_mm to create a new mm with reorganized page tables. The old mm is freed and the process has now a page status extended field after every page table. Code that wants to exploit pgstes should SELECT CONFIG_PGSTE. This patch has a small common code hit, namely making dup_mm non-static. Signed-off-by: Martin Schwidefsky <schwidefsky at de.ibm.com> Signed-off-by: Carsten Otte <cotte at de.ibm.com> --- arch/s390/Kconfig | 4 ++ arch/s390/kernel/setup....

..._young must be moved. This is a no-op for all architecture but s390. page_referenced checks the referenced bits for the physiscal page and for all mappings: o The physical page is checked with page_test_and_clear_young. o The mappings are checked with ptep_test_and_clear_young and friends. Without pgstes (the current implementation on Linux s390) the physical page check is implemented but the mapping callbacks are no-ops because dirty and referenced are not tracked in the s390 page tables. The pgstes introduces guest and host dirty and reference bits for s390 in the host mapping. These mapping mu...

...z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git master as of 2008-03-20 hash g914bd66: [RFC/PATCH 01/15] preparation: provide hook to enable pgstes in user pagetable [RFC/PATCH 02/15] preparation: host memory management changes for s390 kvm [RFC/PATCH 03/15] preparation: address of the 64bit extint parm in lowcore [RFC/PATCH 04/15] preparation: spli...

...z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git master as of 2008-03-20 hash g914bd66: [RFC/PATCH 01/15] preparation: provide hook to enable pgstes in user pagetable [RFC/PATCH 02/15] preparation: host memory management changes for s390 kvm [RFC/PATCH 03/15] preparation: address of the 64bit extint parm in lowcore [RFC/PATCH 04/15] preparation: spli...