History log of /linux-6.15/arch/mips/include/asm/pgtable-bits.h (Results 1 – 25 of 38)
Revision (<<< Hide revision tags) (Show revision tags >>>) Date Author Comments
Revision tags: v6.15, v6.15-rc7, v6.15-rc6, v6.15-rc5, v6.15-rc4, v6.15-rc3, v6.15-rc2, v6.15-rc1, v6.14, v6.14-rc7, v6.14-rc6, v6.14-rc5, v6.14-rc4, v6.14-rc3, v6.14-rc2, v6.14-rc1, v6.13, v6.13-rc7, v6.13-rc6, v6.13-rc5, v6.13-rc4, v6.13-rc3, v6.13-rc2, v6.13-rc1, v6.12, v6.12-rc7, v6.12-rc6, v6.12-rc5, v6.12-rc4, v6.12-rc3, v6.12-rc2, v6.12-rc1, v6.11, v6.11-rc7, v6.11-rc6, v6.11-rc5, v6.11-rc4, v6.11-rc3, v6.11-rc2, v6.11-rc1, v6.10, v6.10-rc7, v6.10-rc6, v6.10-rc5, v6.10-rc4, v6.10-rc3, v6.10-rc2, v6.10-rc1, v6.9, v6.9-rc7, v6.9-rc6, v6.9-rc5, v6.9-rc4, v6.9-rc3, v6.9-rc2, v6.9-rc1, v6.8, v6.8-rc7, v6.8-rc6, v6.8-rc5, v6.8-rc4, v6.8-rc3, v6.8-rc2, v6.8-rc1, v6.7
# 2f9060b1 03-Jan-2024 Bjorn Helgaas <[email protected]>

MIPS: Fix typos

Fix typos, most reported by "codespell arch/mips". Only touches comments,
no code changes.

Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: [email protected]
Reviewe

MIPS: Fix typos

Fix typos, most reported by "codespell arch/mips". Only touches comments,
no code changes.

Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: [email protected]
Reviewed-by: Randy Dunlap <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

show more ...


Revision tags: v6.7-rc8, v6.7-rc7, v6.7-rc6, v6.7-rc5, v6.7-rc4, v6.7-rc3, v6.7-rc2, v6.7-rc1, v6.6, v6.6-rc7, v6.6-rc6, v6.6-rc5, v6.6-rc4, v6.6-rc3, v6.6-rc2, v6.6-rc1, v6.5, v6.5-rc7, v6.5-rc6, v6.5-rc5
# 15fa3e8e 02-Aug-2023 Matthew Wilcox (Oracle) <[email protected]>

mips: implement the new page table range API

Rename _PFN_SHIFT to PFN_PTE_SHIFT. Convert a few places
to call set_pte() instead of set_pte_at(). Add set_ptes(),
update_mmu_cache_range(), flush_ica

mips: implement the new page table range API

Rename _PFN_SHIFT to PFN_PTE_SHIFT. Convert a few places
to call set_pte() instead of set_pte_at(). Add set_ptes(),
update_mmu_cache_range(), flush_icache_pages() and flush_dcache_folio().
Change the PG_arch_1 (aka PG_dcache_dirty) flag from being per-page
to per-folio.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Acked-by: Mike Rapoport (IBM) <[email protected]>
Cc: Thomas Bogendoerfer <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

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Revision tags: v6.5-rc4, v6.5-rc3, v6.5-rc2, v6.5-rc1, v6.4, v6.4-rc7, v6.4-rc6, v6.4-rc5, v6.4-rc4, v6.4-rc3, v6.4-rc2, v6.4-rc1, v6.3, v6.3-rc7
# 1492c6b1 12-Apr-2023 Henry Willard <[email protected]>

MIPS: Don't clear _PAGE_SPECIAL in _PAGE_CHG_MASK

In the special case where

p = mmap(NULL, ALLOC_SIZE, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);

is followed b

MIPS: Don't clear _PAGE_SPECIAL in _PAGE_CHG_MASK

In the special case where

p = mmap(NULL, ALLOC_SIZE, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);

is followed by

rc = mprotect(p, ALLOC_SIZE, PROT_NONE);

the _PAGE_SPECIAL bit in the page tables will be cleared by
mistake and the later unmapped operations will incorrectly
modify the struct page for the the zero page. This sequence
occurs in the madvise05 test of the Linux Test Project
suite of tests.

This was discovered while testing an older version of the kernel
(5.4.17) on a MIPS device. Unfortunately, support for this device
is not available in newer kernels, so I can't test this with the
latest Linux kernel code. It looks like the problem exists in
newer kernels, but I can't verify it. Except for the LTP test,
this sequence of calls is probably not common.

Passing it along in the hope it will be useful to someone.

Signed-off-by: Henry Willard <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

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Revision tags: v6.3-rc6, v6.3-rc5, v6.3-rc4, v6.3-rc3, v6.3-rc2, v6.3-rc1, v6.2, v6.2-rc8, v6.2-rc7, v6.2-rc6, v6.2-rc5, v6.2-rc4, v6.2-rc3, v6.2-rc2, v6.2-rc1, v6.1, v6.1-rc8, v6.1-rc7, v6.1-rc6, v6.1-rc5, v6.1-rc4, v6.1-rc3, v6.1-rc2, v6.1-rc1, v6.0, v6.0-rc7, v6.0-rc6, v6.0-rc5, v6.0-rc4, v6.0-rc3, v6.0-rc2, v6.0-rc1, v5.19, v5.19-rc8, v5.19-rc7, v5.19-rc6, v5.19-rc5, v5.19-rc4, v5.19-rc3, v5.19-rc2, v5.19-rc1, v5.18, v5.18-rc7, v5.18-rc6, v5.18-rc5, v5.18-rc4, v5.18-rc3, v5.18-rc2, v5.18-rc1, v5.17, v5.17-rc8, v5.17-rc7, v5.17-rc6, v5.17-rc5, v5.17-rc4, v5.17-rc3, v5.17-rc2, v5.17-rc1, v5.16, v5.16-rc8, v5.16-rc7, v5.16-rc6, v5.16-rc5, v5.16-rc4, v5.16-rc3, v5.16-rc2, v5.16-rc1, v5.15, v5.15-rc7, v5.15-rc6, v5.15-rc5, v5.15-rc4, v5.15-rc3, v5.15-rc2, v5.15-rc1, v5.14, v5.14-rc7, v5.14-rc6, v5.14-rc5, v5.14-rc4, v5.14-rc3, v5.14-rc2, v5.14-rc1, v5.13, v5.13-rc7, v5.13-rc6, v5.13-rc5, v5.13-rc4, v5.13-rc3, v5.13-rc2, v5.13-rc1, v5.12, v5.12-rc8, v5.12-rc7, v5.12-rc6, v5.12-rc5, v5.12-rc4, v5.12-rc3, v5.12-rc2, v5.12-rc1, v5.12-rc1-dontuse, v5.11, v5.11-rc7, v5.11-rc6, v5.11-rc5, v5.11-rc4, v5.11-rc3, v5.11-rc2, v5.11-rc1, v5.10, v5.10-rc7, v5.10-rc6, v5.10-rc5, v5.10-rc4, v5.10-rc3, v5.10-rc2, v5.10-rc1, v5.9, v5.9-rc8, v5.9-rc7, v5.9-rc6, v5.9-rc5, v5.9-rc4
# 95b1f6db 06-Sep-2020 Paul Cercueil <[email protected]>

MIPS: cpu-probe: Set Ingenic's writecombine to _CACHE_CACHABLE_WA

Previously, in cpu_probe_ingenic(), c->writecombine was set to
_CACHE_UNCACHED_ACCELERATED, but this macro was defined differently w

MIPS: cpu-probe: Set Ingenic's writecombine to _CACHE_CACHABLE_WA

Previously, in cpu_probe_ingenic(), c->writecombine was set to
_CACHE_UNCACHED_ACCELERATED, but this macro was defined differently when
CONFIG_MACH_INGENIC was set. This made it impossible to support multiple
CPUs.

Address this issue by setting c->writecombine to _CACHE_CACHABLE_WA
directly and removing the dependency on CONFIG_MACH_INGENIC.

Signed-off-by: Paul Cercueil <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

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Revision tags: v5.9-rc3, v5.9-rc2, v5.9-rc1, v5.8, v5.8-rc7, v5.8-rc6, v5.8-rc5, v5.8-rc4, v5.8-rc3, v5.8-rc2, v5.8-rc1, v5.7, v5.7-rc7, v5.7-rc6, v5.7-rc5, v5.7-rc4
# 2971317a 29-Apr-2020 Guoyun Sun <[email protected]>

mips/mm: Add page soft dirty tracking

User space checkpoint and restart tool (CRIU) needs the page's change
to be soft tracked. This allows to do a pre checkpoint and then dump
only touched pages.

mips/mm: Add page soft dirty tracking

User space checkpoint and restart tool (CRIU) needs the page's change
to be soft tracked. This allows to do a pre checkpoint and then dump
only touched pages.

Signed-off-by: Guoyun Sun <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

show more ...


Revision tags: v5.7-rc3, v5.7-rc2, v5.7-rc1, v5.6, v5.6-rc7, v5.6-rc6, v5.6-rc5, v5.6-rc4, v5.6-rc3, v5.6-rc2, v5.6-rc1, v5.5, v5.5-rc7, v5.5-rc6, v5.5-rc5, v5.5-rc4, v5.5-rc3, v5.5-rc2, v5.5-rc1, v5.4, v5.4-rc8, v5.4-rc7, v5.4-rc6, v5.4-rc5, v5.4-rc4, v5.4-rc3, v5.4-rc2, v5.4-rc1
# d1af2ab3 18-Sep-2019 Paul Burton <[email protected]>

MIPS: Disable pte_special() for MIPS32 with RiXi

Commit 61cbfff4b1a7 ("MIPS: pte_special()/pte_mkspecial() support")
added a _PAGE_SPECIAL bit to the pgprot bits of our PTEs. Unfortunately
for MIPS3

MIPS: Disable pte_special() for MIPS32 with RiXi

Commit 61cbfff4b1a7 ("MIPS: pte_special()/pte_mkspecial() support")
added a _PAGE_SPECIAL bit to the pgprot bits of our PTEs. Unfortunately
for MIPS32 configurations with RiXi support this pushed the number of
pgprot bits to 13. Since the PFN field in EntryLo begins at bit 12 this
results in us shifting the most significant bit of the physical address
beyond the end of the PTE, leading any mapped access to a physical
address above 2GB to incorrectly access an address 2GB lower than
intended.

For now, disable the pte_special() support for MIPS32 configurations
that support RiXi.

Fixes: 61cbfff4b1a7 ("MIPS: pte_special()/pte_mkspecial() support")
Signed-off-by: Paul Burton <[email protected]>
Cc: Dmitry Korotin <[email protected]>
Cc: [email protected]

show more ...


Revision tags: v5.3, v5.3-rc8, v5.3-rc7
# 3d77a95f 31-Aug-2019 Paul Burton <[email protected]>

MIPS: Drop Loongson _CACHE_* definitions

_CACHE_CACHABLE_NONCOHERENT is defined as 3<<_CACHE_SHIFT by default, so
there's no need to define it as such specifically for Loongson.

_CACHE_CACHABLE_COH

MIPS: Drop Loongson _CACHE_* definitions

_CACHE_CACHABLE_NONCOHERENT is defined as 3<<_CACHE_SHIFT by default, so
there's no need to define it as such specifically for Loongson.

_CACHE_CACHABLE_COHERENT is not used anywhere in the kernel, so there's
no need to define it at all.

Finally the comment found alongside these definitions seems incorrect -
it suggests that we're defining _CACHE_CACHABLE_NONCOHERENT such that it
actually provides coherence, but the opposite seems to be true & instead
the unused _CACHE_CACHABLE_COHERENT is defined as the typically
incoherent value.

Delete the whole thing, which will have no effect on the compiled code
anyway.

Signed-off-by: Paul Burton <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Jiaxun Yang <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: [email protected]

show more ...


# 54746829 31-Aug-2019 Paul Burton <[email protected]>

MIPS: Select R3k-style TLB in Kconfig

Currently areas where we need to determine whether the TLB is R3k-style
need to check for either of CONFIG_CPU_R3000 || CONFIG_CPU_TX39XX.

Introduce a new CONF

MIPS: Select R3k-style TLB in Kconfig

Currently areas where we need to determine whether the TLB is R3k-style
need to check for either of CONFIG_CPU_R3000 || CONFIG_CPU_TX39XX.

Introduce a new CONFIG_CPU_R3K_TLB & select it from both of the above,
allowing us to simplify checks for R3k-style TLBs by only checking for
this new Kconfig option.

Signed-off-by: Paul Burton <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Cc: [email protected]

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Revision tags: v5.3-rc6, v5.3-rc5, v5.3-rc4, v5.3-rc3, v5.3-rc2, v5.3-rc1, v5.2, v5.2-rc7, v5.2-rc6
# 61cbfff4 18-Jun-2019 Dmitry Korotin <[email protected]>

MIPS: pte_special()/pte_mkspecial() support

Add support for pte_special() & pte_mkspecial(), replacing our previous
stubs with functional implementations.

Signed-off-by: Dmitry Korotin <dkorotin@wa

MIPS: pte_special()/pte_mkspecial() support

Add support for pte_special() & pte_mkspecial(), replacing our previous
stubs with functional implementations.

Signed-off-by: Dmitry Korotin <[email protected]>
[[email protected]:
- Fix for CONFIG_PHYS_ADDR_T_64BIT && CONFIG_CPU_MIPS32.
- Rewrite commit message.]
Signed-off-by: Paul Burton <[email protected]>
Cc: [email protected]

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# 35476311 15-Jul-2019 Daniel Silsby <[email protected]>

MIPS: Add partial 32-bit huge page support

This adds initial support for huge pages to 32-bit MIPS systems.
Systems with extended addressing enabled (EVA,XPA,Alchemy/Netlogic)
are not yet supported

MIPS: Add partial 32-bit huge page support

This adds initial support for huge pages to 32-bit MIPS systems.
Systems with extended addressing enabled (EVA,XPA,Alchemy/Netlogic)
are not yet supported.
With huge pages enabled, this implementation will increase page table
memory overhead to match that of a 64-bit MIPS system. However, the
cache-friendliness of page table walks is not affected significantly.

Signed-off-by: Daniel Silsby <[email protected]>
Signed-off-by: Paul Cercueil <[email protected]>
Signed-off-by: Paul Burton <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: James Hogan <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]

show more ...


Revision tags: v5.2-rc5, v5.2-rc4, v5.2-rc3, v5.2-rc2, v5.2-rc1, v5.1, v5.1-rc7, v5.1-rc6, v5.1-rc5, v5.1-rc4, v5.1-rc3, v5.1-rc2, v5.1-rc1, v5.0, v5.0-rc8, v5.0-rc7, v5.0-rc6, v5.0-rc5, v5.0-rc4, v5.0-rc3, v5.0-rc2, v5.0-rc1, v4.20, v4.20-rc7, v4.20-rc6, v4.20-rc5, v4.20-rc4, v4.20-rc3, v4.20-rc2, v4.20-rc1, v4.19, v4.19-rc8, v4.19-rc7, v4.19-rc6, v4.19-rc5, v4.19-rc4, v4.19-rc3, v4.19-rc2, v4.19-rc1, v4.18, v4.18-rc8, v4.18-rc7, v4.18-rc6, v4.18-rc5, v4.18-rc4, v4.18-rc3, v4.18-rc2, v4.18-rc1, v4.17, v4.17-rc7, v4.17-rc6, v4.17-rc5, v4.17-rc4, v4.17-rc3, v4.17-rc2, v4.17-rc1, v4.16, v4.16-rc7, v4.16-rc6, v4.16-rc5, v4.16-rc4, v4.16-rc3, v4.16-rc2, v4.16-rc1, v4.15, v4.15-rc9, v4.15-rc8, v4.15-rc7, v4.15-rc6, v4.15-rc5, v4.15-rc4, v4.15-rc3, v4.15-rc2, v4.15-rc1, v4.14, v4.14-rc8, v4.14-rc7, v4.14-rc6, v4.14-rc5, v4.14-rc4, v4.14-rc3, v4.14-rc2, v4.14-rc1, v4.13, v4.13-rc7, v4.13-rc6, v4.13-rc5, v4.13-rc4, v4.13-rc3, v4.13-rc2, v4.13-rc1, v4.12, v4.12-rc7, v4.12-rc6, v4.12-rc5, v4.12-rc4, v4.12-rc3, v4.12-rc2, v4.12-rc1, v4.11, v4.11-rc8, v4.11-rc7, v4.11-rc6, v4.11-rc5, v4.11-rc4, v4.11-rc3, v4.11-rc2, v4.11-rc1, v4.10, v4.10-rc8, v4.10-rc7, v4.10-rc6, v4.10-rc5, v4.10-rc4, v4.10-rc3, v4.10-rc2, v4.10-rc1, v4.9, v4.9-rc8, v4.9-rc7, v4.9-rc6, v4.9-rc5, v4.9-rc4, v4.9-rc3, v4.9-rc2, v4.9-rc1, v4.8, v4.8-rc8, v4.8-rc7, v4.8-rc6, v4.8-rc5, v4.8-rc4, v4.8-rc3, v4.8-rc2, v4.8-rc1, v4.7, v4.7-rc7, v4.7-rc6, v4.7-rc5, v4.7-rc4, v4.7-rc3, v4.7-rc2, v4.7-rc1, v4.6, v4.6-rc7, v4.6-rc6, v4.6-rc5, v4.6-rc4, v4.6-rc3, v4.6-rc2, v4.6-rc1, v4.5, v4.5-rc7, v4.5-rc6, v4.5-rc5, v4.5-rc4
# 8256b17e 09-Feb-2016 Florian Fainelli <[email protected]>

MIPS: Allow RIXI to be used on non-R2 or R6 cores

Some processors, like Broadcom's BMIPS4380 and BMIPS5000 support RIXI and the
"rotr" instruction, which can be used to get a slightly more efficient

MIPS: Allow RIXI to be used on non-R2 or R6 cores

Some processors, like Broadcom's BMIPS4380 and BMIPS5000 support RIXI and the
"rotr" instruction, which can be used to get a slightly more efficient page
table layout.

Introduce a CONFIG_CPU_HAS_RIXI such that those cores can benefit from this
feature. Perform the conditional check updates where relevant.

Signed-off-by: Florian Fainelli <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/12505/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


# 7b2cb64f 19-Apr-2016 Paul Burton <[email protected]>

MIPS: mm: Fix MIPS32 36b physical addressing (alchemy, netlogic)

There are 2 distinct cases in which a kernel for a MIPS32 CPU
(CONFIG_CPU_MIPS32=y) may use 64 bit physical addresses
(CONFIG_PHYS_AD

MIPS: mm: Fix MIPS32 36b physical addressing (alchemy, netlogic)

There are 2 distinct cases in which a kernel for a MIPS32 CPU
(CONFIG_CPU_MIPS32=y) may use 64 bit physical addresses
(CONFIG_PHYS_ADDR_T_64BIT=y):

- 36 bit physical addressing as used by RMI Alchemy & Netlogic XLP/XLR
CPUs.

- MIPS32r5 eXtended Physical Addressing (XPA).

These 2 cases are distinct in that they require different behaviour from
the kernel - the EntryLo registers have different formats. Until Linux
v4.1 we only supported the first case, with code conditional upon the 2
aforementioned Kconfig variables being set. Commit c5b367835cfc ("MIPS:
Add support for XPA.") added support for the second case, but did so by
modifying the code that existed for the first case rather than treating
the 2 cases as distinct. Since the EntryLo registers have different
formats this breaks the 36 bit Alchemy/XLP/XLR case. Fix this by
splitting the 2 cases, with XPA cases now being conditional upon
CONFIG_XPA and the non-XPA case matching the code as it existed prior to
commit c5b367835cfc ("MIPS: Add support for XPA.").

Signed-off-by: Paul Burton <[email protected]>
Reported-by: Manuel Lauss <[email protected]>
Tested-by: Manuel Lauss <[email protected]>
Fixes: c5b367835cfc ("MIPS: Add support for XPA.")
Cc: James Hogan <[email protected]>
Cc: David Daney <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Maciej W. Rozycki <[email protected]>
Cc: Paul Gortmaker <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Peter Zijlstra (Intel) <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Alex Smith <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: [email protected] # v4.1+
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/13119/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


# 780602d7 19-Apr-2016 Paul Burton <[email protected]>

MIPS: mm: Standardise on _PAGE_NO_READ, drop _PAGE_READ

Ever since support for RI/XI was implemented by commit 6dd9344cfc41
("MIPS: Implement Read Inhibit/eXecute Inhibit") we've had a mixture of
_P

MIPS: mm: Standardise on _PAGE_NO_READ, drop _PAGE_READ

Ever since support for RI/XI was implemented by commit 6dd9344cfc41
("MIPS: Implement Read Inhibit/eXecute Inhibit") we've had a mixture of
_PAGE_READ & _PAGE_NO_READ bits. Rather than keep both around, switch
away from using _PAGE_READ to determine page presence & instead invert
the use to _PAGE_NO_READ. Wherever we formerly had no definition for
_PAGE_NO_READ, change what was _PAGE_READ to _PAGE_NO_READ. The end
result is that we consistently use _PAGE_NO_READ to determine whether a
page is readable, regardless of whether RI/XI is implemented.

Signed-off-by: Paul Burton <[email protected]>
Reviewed-by: James Hogan <[email protected]>
Cc: David Daney <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Maciej W. Rozycki <[email protected]>
Cc: Paul Gortmaker <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Alex Smith <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/13116/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


# 69497700 19-Apr-2016 Paul Burton <[email protected]>

MIPS: Use enums to make asm/pgtable-bits.h readable

asm/pgtable-bits.h has grown to become an unreadable mess of #ifdef
directives defining bits conditionally upon other bits all at the
preprocessin

MIPS: Use enums to make asm/pgtable-bits.h readable

asm/pgtable-bits.h has grown to become an unreadable mess of #ifdef
directives defining bits conditionally upon other bits all at the
preprocessing stage, for no good reason.

Instead of having quite so many #ifdef's, simply use enums to provide
sequential numbering for bit shifts, without having to keep track
manually of what the last bit defined was. Masks are defined separately,
after the shifts, which allows for most of their definitions to be
reused for all systems rather than duplicated.

This patch is not intended to make any behavioural change to the code -
all bits should be used in the same way they were before this patch.

Signed-off-by: Paul Burton <[email protected]>
Reviewed-by: James Hogan <[email protected]>
Cc: Maciej W. Rozycki <[email protected]>
Cc: Alex Smith <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/13115/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


# 253f0d4a 19-Apr-2016 Paul Burton <[email protected]>

MIPS: Remove redundant asm/pgtable-bits.h inclusions

asm/pgtable-bits.h is included in 2 assembly files and thus has to
ifdef around C code, however nothing defined by the header is used
in either o

MIPS: Remove redundant asm/pgtable-bits.h inclusions

asm/pgtable-bits.h is included in 2 assembly files and thus has to
ifdef around C code, however nothing defined by the header is used
in either of the assembly files that include it.

Remove the redundant inclusions such that asm/pgtable-bits.h doesn't
need to #ifdef around C code, for cleanliness and in preparation for
later patches which will add more C.

Signed-off-by: Paul Burton <[email protected]>
Reviewed-by: James Hogan <[email protected]>
Cc: Maciej W. Rozycki <[email protected]>
Cc: Jonas Gorski <[email protected]>
Cc: Alex Smith <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/13114/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


Revision tags: v4.5-rc3, v4.5-rc2, v4.5-rc1
# b2787370 16-Jan-2016 Kirill A. Shutemov <[email protected]>

mips, thp: remove infrastructure for handling splitting PMDs

With new refcounting we don't need to mark PMDs splitting. Let's drop
code to handle this.

pmdp_splitting_flush() is not needed too: on

mips, thp: remove infrastructure for handling splitting PMDs

With new refcounting we don't need to mark PMDs splitting. Let's drop
code to handle this.

pmdp_splitting_flush() is not needed too: on splitting PMD we will do
pmdp_clear_flush() + set_pte_at(). pmdp_clear_flush() will do IPI as
needed for fast_gup.

Signed-off-by: Kirill A. Shutemov <[email protected]>
Cc: Sasha Levin <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Jerome Marchand <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Cc: Steve Capper <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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Revision tags: v4.4, v4.4-rc8, v4.4-rc7, v4.4-rc6, v4.4-rc5, v4.4-rc4, v4.4-rc3, v4.4-rc2, v4.4-rc1, v4.3, v4.3-rc7, v4.3-rc6, v4.3-rc5, v4.3-rc4, v4.3-rc3, v4.3-rc2, v4.3-rc1, v4.2, v4.2-rc8, v4.2-rc7, v4.2-rc6, v4.2-rc5, v4.2-rc4
# f1f5e414 24-Jul-2015 Alex Smith <[email protected]>

MIPS: Use Ingenic-specific write combine attribute on all Ingenic platforms

The Ingenic-specific write combining cache attribute was defined based
on CONFIG_MACH_JZ4740 and therefore not used on JZ4

MIPS: Use Ingenic-specific write combine attribute on all Ingenic platforms

The Ingenic-specific write combining cache attribute was defined based
on CONFIG_MACH_JZ4740 and therefore not used on JZ4780. Change this to
CONFIG_MACH_INGENIC so that it gets used on all Ingenic platforms.

Signed-off-by: Alex Smith <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/10769/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


Revision tags: v4.2-rc3, v4.2-rc2, v4.2-rc1, v4.1, v4.1-rc8, v4.1-rc7, v4.1-rc6, v4.1-rc5, v4.1-rc4, v4.1-rc3, v4.1-rc2
# 1cfa8de2 03-May-2015 Maciej W. Rozycki <[email protected]>

MIPS: pgtable-bits.h: Correct _PAGE_GLOBAL_SHIFT build failure

Correct a build failure introduced by be0c37c9 [MIPS: Rearrange PTE bits
into fixed positions.]:

In file included from ./arch/mips/inc

MIPS: pgtable-bits.h: Correct _PAGE_GLOBAL_SHIFT build failure

Correct a build failure introduced by be0c37c9 [MIPS: Rearrange PTE bits
into fixed positions.]:

In file included from ./arch/mips/include/asm/io.h:27:0,
from ./arch/mips/include/asm/page.h:176,
from include/linux/mm_types.h:15,
from include/linux/sched.h:27,
from include/linux/ptrace.h:5,
from arch/mips/kernel/cpu-probe.c:16:
./arch/mips/include/asm/pgtable-bits.h:164:0: error: "_PAGE_GLOBAL_SHIFT" redefined [-Werror]
#define _PAGE_GLOBAL_SHIFT (_PAGE_MODIFIED_SHIFT + 1)
^
./arch/mips/include/asm/pgtable-bits.h:141:0: note: this is the location of the previous definition
#define _PAGE_GLOBAL_SHIFT (_PAGE_SPLITTING_SHIFT + 1)
^
cc1: all warnings being treated as errors
make[2]: *** [arch/mips/kernel/cpu-probe.o] Error 1

for 64BIT/CPU_MIPSR1/MIPS_HUGE_TLB_SUPPORT configurations. Remove the
scattered double `_PAGE_NO_EXEC_SHIFT' and `_PAGE_GLOBAL_SHIFT' macro
definitions and rearrange them so that the respective macros these
definitions are based on are also those used for guarding conditionals.

[[email protected]: resolved conflicts and updated commments.]

Signed-off-by: Maciej W. Rozycki <[email protected]>
Cc: Steven J. Hill <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/9960/
Signed-off-by: Ralf Baechle <[email protected]>

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# d7b63141 29-May-2015 Markos Chandras <[email protected]>

MIPS: pgtable-bits: Fix XPA damage to R6 definitions.

Commit be0c37c985ed ("MIPS: Rearrange PTE bits into fixed positions.")
rearranged the PTE bits into fixed positions in preparation for the XPA
s

MIPS: pgtable-bits: Fix XPA damage to R6 definitions.

Commit be0c37c985ed ("MIPS: Rearrange PTE bits into fixed positions.")
rearranged the PTE bits into fixed positions in preparation for the XPA
support. However, this patch broke R6 since it only took R2 cores
into consideration for the RI/XI bits leading to boot failures. We fix
this by adding the missing CONFIG_CPU_MIPSR6 definitions

Fixes: be0c37c985ed ("MIPS: Rearrange PTE bits into fixed positions.")
Cc: Steven J. Hill <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/10208/
Signed-off-by: Markos Chandras <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>

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Revision tags: v4.1-rc1, v4.0, v4.0-rc7, v4.0-rc6, v4.0-rc5, v4.0-rc4, v4.0-rc3, v4.0-rc2
# c5b36783 27-Feb-2015 Steven J. Hill <[email protected]>

MIPS: Add support for XPA.

Add support for extended physical addressing (XPA) so that
32-bit platforms can access equal to or greater than 40 bits
of physical addresses.

NOTE:
1) XPA and EVA

MIPS: Add support for XPA.

Add support for extended physical addressing (XPA) so that
32-bit platforms can access equal to or greater than 40 bits
of physical addresses.

NOTE:
1) XPA and EVA are not the same and cannot be used
simultaneously.
2) If you configure your kernel for XPA, the PTEs
and all address sizes become 64-bit.
3) Your platform MUST have working HIGHMEM support.

Signed-off-by: Steven J. Hill <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/9355/
Signed-off-by: Ralf Baechle <[email protected]>

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# be0c37c9 27-Feb-2015 Steven J. Hill <[email protected]>

MIPS: Rearrange PTE bits into fixed positions.

This patch rearranges the PTE bits into fixed positions for R2
and later cores. In the past, the TLB handling code did runtime
checking of RI/XI and ad

MIPS: Rearrange PTE bits into fixed positions.

This patch rearranges the PTE bits into fixed positions for R2
and later cores. In the past, the TLB handling code did runtime
checking of RI/XI and adjusted the shifts and rotates in order
to fit the largest PFN value into the PTE. The checking now
occurs when building the TLB handler, thus eliminating those
checks. These new arrangements also define the largest possible
PFN value that can fit in the PTE. HUGE page support is only
available for 64-bit cores. Layouts of the PTE bits are now:

64-bit, R1 or earlier: CCC D V G [S H] M A W R P
32-bit, R1 or earler: CCC D V G M A W R P
64-bit, R2 or later: CCC D V G RI/R XI [S H] M A W P
32-bit, R2 or later: CCC D V G RI/R XI M A W P

[[email protected]: Fix another build error *rant* *rant*]

Signed-off-by: Steven J. Hill <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/9353/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


Revision tags: v4.0-rc1
# 05f9883a 19-Feb-2015 Steven J. Hill <[email protected]>

MIPS: Usage and cosmetic cleanups of page table bits.

* Clean up white spaces and tabs.
* Get rid of remaining hardcoded values for calculating
shifts and masks.
* Get rid of redundant ma

MIPS: Usage and cosmetic cleanups of page table bits.

* Clean up white spaces and tabs.
* Get rid of remaining hardcoded values for calculating
shifts and masks.
* Get rid of redundant macro values.
* Do not use page table bits directly in #ifdef's.

Signed-off-by: Steven J. Hill <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/9287/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


# b32da82e 10-Feb-2015 Kirill A. Shutemov <[email protected]>

mips: drop _PAGE_FILE and pte_file()-related helpers

We've replaced remap_file_pages(2) implementation with emulation. Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov

mips: drop _PAGE_FILE and pte_file()-related helpers

We've replaced remap_file_pages(2) implementation with emulation. Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

show more ...


Revision tags: v3.19, v3.19-rc7, v3.19-rc6, v3.19-rc5, v3.19-rc4, v3.19-rc3, v3.19-rc2, v3.19-rc1, v3.18, v3.18-rc7, v3.18-rc6, v3.18-rc5
# 77a5c593 13-Nov-2014 Steven J. Hill <[email protected]>

MIPS: Cosmetic cleanups of page table headers.

* Clean up white spaces and tabs.
* Remove _PAGE_R4KBUG which is no longer used.
* Get rid of hardcoded values and calculate shifts and
m

MIPS: Cosmetic cleanups of page table headers.

* Clean up white spaces and tabs.
* Remove _PAGE_R4KBUG which is no longer used.
* Get rid of hardcoded values and calculate shifts and
masks where possible.

Signed-off-by: Steven J. Hill <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/8457/
Signed-off-by: Ralf Baechle <[email protected]>

show more ...


# 34adb28d 21-Nov-2014 Ralf Baechle <[email protected]>

MIPS: Replace MIPS-specific 64BIT_PHYS_ADDR with generic PHYS_ADDR_T_64BIT

Signed-off-by: Ralf Baechle <[email protected]>


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