[PATCH v3 00/17] LPAE fixes and extensions for Keystone

From: Cyril Chemparathy
Date: Tue Sep 11 2012 - 13:40:00 EST

This series is a refreshed subset of the Keystone platform patches posted
earlier (see [1] and [2]). In this series, we've dropped the Keystone
sub-architecture patches, which have remained largely unchanged from before,
and were being provided only for reference. The focus with this series is
to get these LPAE related changes queued up.

These patches have been rebased and verified against linux-next-20120910.
These patches are also available in git:
git://git.kernel.org/pub/scm/linux/kernel/git/cchemparathy/linux-keystone.git upstream/keystone-lpae-v3

[1] http://comments.gmane.org/gmane.linux.kernel/1341497
[2] http://comments.gmane.org/gmane.linux.kernel/1332069

Series changelog:

(01/22) ARM: add mechanism for late code patching
(v3) ability to patch multiple sequential instructions with the IMM8 patch
type
(v3) error handling at module patch time
(v3) reuse __patch_text() from kprobes code
(v2) pulled runtime patching code into separate source files
(v2) reordered arguments to patch macros for consistency with assembly
"Rd, Rt, imm" ordering
(v2) added support for mov immediate patching
(v2) cache flush patched instructions instead of entire kernel code
(v2) pack patch table to reduce table volume
(v2) add to module vermagic to reflect abi change
(v2) misc. cleanups in naming and structure

(02/22) ARM: add self test for runtime patch mechanism
(v3) added tests for both even and odd shifts of immediate values
(v2) added init-time tests to verify instruction encoding

(03/22) ARM: use late patch framework for phys-virt patching
(v3) fixed commit description for unconditional init of __pv_* symbols
(v2) move __pv_offset and __pv_phys_offset to C code
(v2) restore conditional init of __pv_offset and __pv_phys_offset

(04/22) ARM: LPAE: use phys_addr_t on virt <--> phys conversion
(v3) unchanged from v2
(v2) fix patched __phys_to_virt() to use 32-bit operand
(v2) convert non-patch __phys_to_virt and __virt_to_phys to inlines to retain
type checking

(05/22) ARM: LPAE: support 64-bit virt_to_phys patching
(v3) added explicit patch stub for 64-bit to clean up compiler generated
code, both 64-bit and 32-bit cases generate optimal code with this
(v2) use phys_addr_t instead of split high/low phys_offsets
(v2) use mov immediate instead of add to zero when patching in high order
physical address bits
(v2) fix __pv_phys_offset handling for big-endian
(v2) remove set_phys_offset()

(06/22) ARM: LPAE: use signed arithmetic for mask definitions
(07/22) ARM: LPAE: use phys_addr_t in alloc_init_pud()
(08/22) ARM: LPAE: use phys_addr_t in free_memmap()
(v3) unchanged from v2
(v2) unchanged from v1

(09/22) ARM: LPAE: use phys_addr_t for initrd location and size
(v3) unchanged from v2
(v2) revert to unsigned long for initrd size

(10/22) ARM: LPAE: use phys_addr_t in switch_mm()
(v3) remove unnecessary handling for !LPAE in proc-v7-3level
(v2) use phys_addr_t instead of u64 in switch_mm()
(v2) revert on changes to v6 and v7-2level
(v2) fix register mapping for big-endian in v7-3level

(11/22) ARM: LPAE: use 64-bit accessors for TTBR registers
(v3) remove unnecessary condition code clobber
(v2) restore comment in cpu_set_reserved_ttbr0()

(12/22) ARM: LPAE: define ARCH_LOW_ADDRESS_LIMIT for bootmem
(13/22) ARM: LPAE: factor out T1SZ and TTBR1 computations
(v3) unchanged from v2
(v2) unchanged from v1

(14/22) ARM: LPAE: accomodate >32-bit addresses for page table base
(v3) unchanged from v2
(v2) apply arch_pgd_shift only on lpae
(v2) move arch_pgd_shift definition to asm/memory.h
(v2) revert on changes to non-lpae procs
(v2) add check to ensure that the pgd physical address is aligned at an
ARCH_PGD_SHIFT boundary

(15/22) ARM: mm: use physical addresses in highmem sanity checks
(16/22) ARM: mm: cleanup checks for membank overlap with vmalloc area
(17/22) ARM: mm: clean up membank size limit checks
(v3) unchanged from v2
(v2) unchanged from v1


Cyril Chemparathy (14):
ARM: add mechanism for late code patching
ARM: add self test for runtime patch mechanism
ARM: use late patch framework for phys-virt patching
ARM: LPAE: use phys_addr_t on virt <--> phys conversion
ARM: LPAE: support 64-bit virt_to_phys patching
ARM: LPAE: use signed arithmetic for mask definitions
ARM: LPAE: use phys_addr_t in switch_mm()
ARM: LPAE: use 64-bit accessors for TTBR registers
ARM: LPAE: define ARCH_LOW_ADDRESS_LIMIT for bootmem
ARM: LPAE: factor out T1SZ and TTBR1 computations
ARM: LPAE: accomodate >32-bit addresses for page table base
ARM: mm: use physical addresses in highmem sanity checks
ARM: mm: cleanup checks for membank overlap with vmalloc area
ARM: mm: clean up membank size limit checks

Vitaly Andrianov (3):
ARM: LPAE: use phys_addr_t in alloc_init_pud()
ARM: LPAE: use phys_addr_t in free_memmap()
ARM: LPAE: use phys_addr_t for initrd location and size

arch/arm/Kconfig | 16 ++
arch/arm/include/asm/memory.h | 101 +++++++---
arch/arm/include/asm/module.h | 7 +
arch/arm/include/asm/page.h | 2 +-
arch/arm/include/asm/pgtable-3level-hwdef.h | 10 +
arch/arm/include/asm/pgtable-3level.h | 6 +-
arch/arm/include/asm/proc-fns.h | 28 ++-
arch/arm/include/asm/runtime-patch.h | 208 +++++++++++++++++++++
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/armksyms.c | 4 -
arch/arm/kernel/head.S | 107 +++--------
arch/arm/kernel/module.c | 14 +-
arch/arm/kernel/runtime-patch.c | 268 +++++++++++++++++++++++++++
arch/arm/kernel/setup.c | 15 ++
arch/arm/kernel/smp.c | 11 +-
arch/arm/kernel/vmlinux.lds.S | 13 +-
arch/arm/mm/context.c | 9 +-
arch/arm/mm/init.c | 19 +-
arch/arm/mm/mmu.c | 49 ++---
arch/arm/mm/proc-v7-3level.S | 41 ++--
20 files changed, 728 insertions(+), 201 deletions(-)
create mode 100644 arch/arm/include/asm/runtime-patch.h
create mode 100644 arch/arm/kernel/runtime-patch.c

--
1.7.9.5

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