[kvm-unit-tests PATCH v4 0/7] s390: Add support for large pages

Claudio Imbrenda
2021-05-26T13:42:55Z

Introduce support for large (1M) and huge (2G) pages.

Add a simple testcase for EDAT1 and EDAT2.

v3->v4
* replace macros in patch 5 with a union representing TEID fields
* clear the teid in expect_pgm_int and clear_pgm_int
* update testcase to use expect_pgm_int, remove expect_dat_fault
* update testcase to use teid union

v2->v3
* Add proper macros for control register bits
* Improved patch titles and descriptions
* Moved definition of TEID bits to library
* Rebased on the lastest upstream branch

v1->v2

* split patch 2 -> new patch 2 and new patch 3
* patch 2: fixes pgtable.h, also fixes wrong usage of REGION_TABLE_LENGTH
instead of SEGMENT_TABLE_LENGTH
* patch 3: introduces new macros and functions for large pages
* patch 4: remove erroneous double call to pte_alloc in get_pte
* patch 4: added comment in mmu.c to bridge the s390x architecural names
with the Linux ones used in the kvm-unit-tests
* patch 5: added and fixed lots of comments to explain what's going on
* patch 5: set FC for region 3 after writing the canary, like for segments
* patch 5: use uintptr_t instead of intptr_t for set_prefix
* patch 5: introduce new macro PGD_PAGE_SHIFT instead of using magic value 41
* patch 5: use VIRT(0) instead of mem to make it more clear what we are
doing, even though VIRT(0) expands to mem

Claudio Imbrenda (7):
s390x: lib: add and use macros for control register bits
libcflat: add SZ_1M and SZ_2G
s390x: lib: fix pgtable.h
s390x: lib: Add idte and other huge pages functions/macros
s390x: lib: add teid union and clear teid from lowcore
s390x: mmu: add support for large pages
s390x: edat test

s390x/Makefile | 1 +
lib/s390x/asm/arch_def.h | 12 ++
lib/s390x/asm/float.h | 4 +-
lib/s390x/asm/interrupt.h | 26 +++-
lib/s390x/asm/pgtable.h | 44 +++++-
lib/libcflat.h | 2 +
lib/s390x/mmu.h | 73 +++++++++-
lib/s390x/interrupt.c | 2 +
lib/s390x/mmu.c | 260 ++++++++++++++++++++++++++++++++----
lib/s390x/sclp.c | 4 +-
s390x/diag288.c | 2 +-
s390x/edat.c | 274 ++++++++++++++++++++++++++++++++++++++
s390x/gs.c | 2 +-
s390x/iep.c | 4 +-
s390x/skrf.c | 2 +-
s390x/smp.c | 8 +-
s390x/vector.c | 2 +-
s390x/unittests.cfg | 3 +
18 files changed, 676 insertions(+), 49 deletions(-)
create mode 100644 s390x/edat.c

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2.31.1