Revision tags: v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4 |
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82e40455 |
| 30-Nov-2023 |
Michael Ellerman <mpe@ellerman.id.au> |
powerpc/mm: Fix build failures due to arch_reserved_kernel_pages()
[ Upstream commit d8c3f243d4db24675b653f0568bb65dae34e6455 ]
With NUMA=n and FA_DUMP=y or PRESERVE_FA_DUMP=y the build fails with:
powerpc/mm: Fix build failures due to arch_reserved_kernel_pages()
[ Upstream commit d8c3f243d4db24675b653f0568bb65dae34e6455 ]
With NUMA=n and FA_DUMP=y or PRESERVE_FA_DUMP=y the build fails with:
arch/powerpc/kernel/fadump.c:1739:22: error: no previous prototype for ‘arch_reserved_kernel_pages’ [-Werror=missing-prototypes] 1739 | unsigned long __init arch_reserved_kernel_pages(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~
The prototype for arch_reserved_kernel_pages() is in include/linux/mm.h, but it's guarded by __HAVE_ARCH_RESERVED_KERNEL_PAGES. The powerpc headers define __HAVE_ARCH_RESERVED_KERNEL_PAGES in asm/mmzone.h, which is not included into the generic headers when NUMA=n.
Move the definition of __HAVE_ARCH_RESERVED_KERNEL_PAGES into asm/mmu.h which is included regardless of NUMA=n.
Additionally the ifdef around __HAVE_ARCH_RESERVED_KERNEL_PAGES needs to also check for CONFIG_PRESERVE_FA_DUMP.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231130114433.3053544-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin <sashal@kernel.org>
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Revision tags: v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50, v6.5, v6.1.49, v6.1.48 |
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0e2a34c4 |
| 22-Aug-2023 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/64e: Fix circular dependency with CONFIG_SMP disabled
asm/percpu.h includes asm/paca.h which needs struct tlb_core_data which is defined in mmu-e500.h
asm/percpu.h is included from asm/mmu.
powerpc/64e: Fix circular dependency with CONFIG_SMP disabled
asm/percpu.h includes asm/paca.h which needs struct tlb_core_data which is defined in mmu-e500.h
asm/percpu.h is included from asm/mmu.h in a #ifdef CONFIG_E500 before the inclusion of mmu-e500.h
To fix that, move the inclusion of asm/percpu.h into mmu-e500.h after the definition of struct tlb_core_data
Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202308220708.nRf5AUAe-lkp@intel.com/ Closes: https://lore.kernel.org/oe-kbuild-all/202308220857.uFq2oAxM-lkp@intel.com/ Closes: https://lore.kernel.org/oe-kbuild-all/202308221055.lw3UzJIL-lkp@intel.com/ Fixes: 3a24ea0df83e ("powerpc/kuap: Use ASM feature fixups instead of static branches") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/5e0f97d5cbcd05238b56b4424ab096468296824d.1692684461.git.christophe.leroy@csgroup.eu
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Revision tags: v6.1.46, v6.1.45, v6.1.44, v6.1.43, v6.1.42, v6.1.41, v6.1.40, v6.1.39 |
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4589a2b7 |
| 11-Jul-2023 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/kuap: MMU_FTR_BOOK3S_KUAP becomes MMU_FTR_KUAP
In order to reuse MMU_FTR_BOOK3S_KUAP for other targets than BOOK3S, rename it MMU_FTR_KUAP.
Signed-off-by: Christophe Leroy <christophe.leroy
powerpc/kuap: MMU_FTR_BOOK3S_KUAP becomes MMU_FTR_KUAP
In order to reuse MMU_FTR_BOOK3S_KUAP for other targets than BOOK3S, rename it MMU_FTR_KUAP.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/c8b6f7b8cd0eeaace96879ed0e0a157faa619451.1689091022.git.christophe.leroy@csgroup.eu
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Revision tags: v6.1.38, v6.1.37, v6.1.36, v6.4, v6.1.35, v6.1.34, v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26, v6.3, v6.1.25, v6.1.24, v6.1.23, v6.1.22, v6.1.21, v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16, v6.1.15, v6.1.14, v6.1.13, v6.2, v6.1.12, v6.1.11, v6.1.10, v6.1.9, v6.1.8, v6.1.7, v6.1.6, v6.1.5, v6.0.19, v6.0.18, v6.1.4, v6.1.3, v6.0.17, v6.1.2, v6.0.16, v6.1.1, v6.0.15, v6.0.14, v6.0.13, v6.1, v6.0.12, v6.0.11, v6.0.10, v5.15.80, v6.0.9, v5.15.79, v6.0.8, v5.15.78, v6.0.7, v5.15.77, v5.15.76, v6.0.6, v6.0.5, v5.15.75, v6.0.4, v6.0.3, v6.0.2, v5.15.74, v5.15.73, v6.0.1, v5.15.72, v6.0, v5.15.71 |
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335e1a91 |
| 27-Sep-2022 |
Haren Myneni <haren@linux.ibm.com> |
powerpc: Ignore DSI error caused by the copy/paste instruction
The data storage interrupt (DSI) error will be generated when the paste operation is issued on the suspended Nest Accelerator (NX) wind
powerpc: Ignore DSI error caused by the copy/paste instruction
The data storage interrupt (DSI) error will be generated when the paste operation is issued on the suspended Nest Accelerator (NX) window due to NX state changes. The hypervisor expects the partition to ignore this error during page fault handling. To differentiate DSI caused by an actual HW configuration or by the NX window, a new “ibm,pi-features” type value is defined. Byte 0, bit 3 of pi-attribute-specifier-type is now defined to indicate this DSI error. If this error is not ignored, the user space can get SIGBUS when the NX request is issued.
This patch adds changes to read ibm,pi-features property and ignore DSI error during page fault handling if MMU_FTR_NX_DSI is defined.
Signed-off-by: Haren Myneni <haren@linux.ibm.com> [mpe: Mention PAPR version in comment] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/b9cd844b85eb8f70459109ce1b14e44c4cc85fa7.camel@linux.ibm.com
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Revision tags: v5.15.70, v5.15.69 |
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3e731858 |
| 19-Sep-2022 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc: Remove CONFIG_PPC_FSL_BOOK3E
CONFIG_PPC_FSL_BOOK3E is redundant with CONFIG_PPC_E500.
Remove it.
And rename five files accordingly.
Signed-off-by: Christophe Leroy <christophe.leroy@csgr
powerpc: Remove CONFIG_PPC_FSL_BOOK3E
CONFIG_PPC_FSL_BOOK3E is redundant with CONFIG_PPC_E500.
Remove it.
And rename five files accordingly.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Rename include guards to match new file names] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/795cb93b88c9a0279289712e674f39e3b108a1b4.1663606876.git.christophe.leroy@csgroup.eu
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688de017 |
| 19-Sep-2022 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc: Change CONFIG_E500 to CONFIG_PPC_E500
It will be used outside arch/powerpc, make it clear its a powerpc configuration item.
And we already have CONFIG_PPC_E500MC, so that will make it more
powerpc: Change CONFIG_E500 to CONFIG_PPC_E500
It will be used outside arch/powerpc, make it clear its a powerpc configuration item.
And we already have CONFIG_PPC_E500MC, so that will make it more consistent.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e63b22083c11c4300f4a82d3123a46e5fdd54fa6.1663606876.git.christophe.leroy@csgroup.eu
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Revision tags: v5.15.68, v5.15.67, v5.15.66, v5.15.65, v5.15.64, v5.15.63, v5.15.62, v5.15.61, v5.15.60, v5.15.59, v5.19, v5.15.58, v5.15.57, v5.15.56, v5.15.55, v5.15.54, v5.15.53, v5.15.52, v5.15.51 |
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3adfb457 |
| 28-Jun-2022 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/64e: Remove MMU_FTR_USE_TLBRSRV and MMU_FTR_USE_PAIRED_MAS
Commit fb5a515704d7 ("powerpc: Remove platforms/wsp and associated pieces") removed the last CPU having features MMU_FTRS_A2 and co
powerpc/64e: Remove MMU_FTR_USE_TLBRSRV and MMU_FTR_USE_PAIRED_MAS
Commit fb5a515704d7 ("powerpc: Remove platforms/wsp and associated pieces") removed the last CPU having features MMU_FTRS_A2 and commit cd68098bcedd ("powerpc: Clean up MMU_FTRS_A2 and MMU_FTR_TYPE_3E") removed MMU_FTRS_A2 which was the last user of MMU_FTR_USE_TLBRSRV and MMU_FTR_USE_PAIRED_MAS.
Remove all code that relies on MMU_FTR_USE_TLBRSRV and MMU_FTR_USE_PAIRED_MAS.
With this change done, TLB miss can happen before the mmu feature fixups.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/cfd5a0ecdb1598da968832e1bddf7431ec267200.1656427701.git.christophe.leroy@csgroup.eu
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Revision tags: v5.15.50, v5.15.49, v5.15.48, v5.15.47, v5.15.46, v5.15.45, v5.15.44, v5.15.43, v5.15.42, v5.18, v5.15.41, v5.15.40, v5.15.39, v5.15.38, v5.15.37, v5.15.36, v5.15.35, v5.15.34, v5.15.33, v5.15.32, v5.15.31, v5.17, v5.15.30, v5.15.29, v5.15.28, v5.15.27, v5.15.26, v5.15.25, v5.15.24, v5.15.23, v5.15.22, v5.15.21, v5.15.20, v5.15.19, v5.15.18, v5.15.17, v5.4.173, v5.15.16, v5.15.15, v5.16, v5.15.10, v5.15.9, v5.15.8, v5.15.7 |
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c2857374 |
| 01-Dec-2021 |
Nicholas Piggin <npiggin@gmail.com> |
powerpc/64s: Make hash MMU support configurable
This adds Kconfig selection which allows 64s hash MMU support to be disabled. It can be disabled if radix support is enabled, the minimum supported CP
powerpc/64s: Make hash MMU support configurable
This adds Kconfig selection which allows 64s hash MMU support to be disabled. It can be disabled if radix support is enabled, the minimum supported CPU type is POWER9 (or higher), and KVM is not selected.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211201144153.2456614-17-npiggin@gmail.com
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Revision tags: v5.15.6, v5.15.5, v5.15.4, v5.15.3, v5.15.2, v5.15.1, v5.15, v5.14.14, v5.14.13, v5.14.12, v5.14.11, v5.14.10, v5.14.9, v5.14.8, v5.14.7, v5.14.6, v5.10.67, v5.10.66, v5.14.5, v5.14.4, v5.10.65, v5.14.3, v5.10.64, v5.14.2, v5.10.63, v5.14.1, v5.10.62, v5.14, v5.10.61, v5.10.60 |
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27fd1111 |
| 03-Aug-2021 |
Jordan Niethe <jniethe5@gmail.com> |
powerpc: Always inline radix_enabled() to fix build failure
This is the same as commit acdad8fb4a15 ("powerpc: Force inlining of mmu_has_feature to fix build failure") but for radix_enabled(). The
powerpc: Always inline radix_enabled() to fix build failure
This is the same as commit acdad8fb4a15 ("powerpc: Force inlining of mmu_has_feature to fix build failure") but for radix_enabled(). The config in the linked bugzilla causes the following build failure:
LD .tmp_vmlinux.kallsyms1 powerpc64-linux-ld: arch/powerpc/mm/pgtable.o: in function `.__ptep_set_access_flags': pgtable.c:(.text+0x17c): undefined reference to `.radix__ptep_set_access_flags' powerpc64-linux-ld: arch/powerpc/mm/pageattr.o: in function `.change_page_attr': pageattr.c:(.text+0xc0): undefined reference to `.radix__flush_tlb_kernel_range' etc.
This is due to radix_enabled() not being inlined. See extract from building with -Winline:
In file included from arch/powerpc/include/asm/lppaca.h:46, from arch/powerpc/include/asm/paca.h:17, from arch/powerpc/include/asm/current.h:13, from include/linux/thread_info.h:23, from include/asm-generic/preempt.h:5, from ./arch/powerpc/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/mmzone.h:8, from include/linux/gfp.h:6, from arch/powerpc/mm/pgtable.c:21: arch/powerpc/include/asm/book3s/64/pgtable.h: In function '__ptep_set_access_flags': arch/powerpc/include/asm/mmu.h:327:20: error: inlining failed in call to 'radix_enabled': call is unlikely and code size would grow [-Werror=inline]
The code relies on constant folding of MMU_FTRS_POSSIBLE at buildtime and elimination of non possible parts of code at compile time. For this to work radix_enabled() must be inlined so make it __always_inline.
Reported-by: Erhard F. <erhard_f@mailbox.org> Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jordan Niethe <jniethe5@gmail.com> [mpe: Trimmed error messages in change log] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://bugzilla.kernel.org/show_bug.cgi?id=213803 Link: https://lore.kernel.org/r/20210804013724.514468-1-jniethe5@gmail.com
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Revision tags: v5.10.53, v5.10.52, v5.10.51, v5.10.50, v5.10.49, v5.13, v5.10.46, v5.10.43 |
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4fcc6366 |
| 08-Jun-2021 |
Jordan Niethe <jniethe5@gmail.com> |
powerpc/modules: Make module_alloc() Strict Module RWX aware
Make module_alloc() use PAGE_KERNEL protections instead of PAGE_KERNEL_EXEX if Strict Module RWX is enabled.
Signed-off-by: Jordan Nieth
powerpc/modules: Make module_alloc() Strict Module RWX aware
Make module_alloc() use PAGE_KERNEL protections instead of PAGE_KERNEL_EXEX if Strict Module RWX is enabled.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210609013431.9805-4-jniethe5@gmail.com
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Revision tags: v5.10.42, v5.10.41, v5.10.40, v5.10.39, v5.4.119, v5.10.36, v5.10.35 |
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0441729e |
| 07-May-2021 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/mmu: Remove leftover CONFIG_E200
Commit 39c8bf2b3cc1 ("powerpc: Retire e200 core (mpc555x processor)") removed CONFIG_E200. Commit f9158d58a4e1 ("powerpc/mm: Add mask of always present MMU f
powerpc/mmu: Remove leftover CONFIG_E200
Commit 39c8bf2b3cc1 ("powerpc: Retire e200 core (mpc555x processor)") removed CONFIG_E200. Commit f9158d58a4e1 ("powerpc/mm: Add mask of always present MMU features") was merged in the same cycle and added a new use of CONFIG_E200.
Remove that use.
Fixes: f9158d58a4e1 ("powerpc/mm: Add mask of always present MMU features") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/594fa3cc0df11e21644fd6a584851ae4f164b2bf.1620367249.git.christophe.leroy@csgroup.eu
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fe3dc333 |
| 07-May-2021 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/mmu: Don't duplicate radix_enabled()
mmu_has_feature(MMU_FTR_TYPE_RADIX) can be evaluated regardless of CONFIG_PPC_RADIX_MMU.
When CONFIG_PPC_RADIX_MMU is not set, mmu_has_feature(MMU_FTR_T
powerpc/mmu: Don't duplicate radix_enabled()
mmu_has_feature(MMU_FTR_TYPE_RADIX) can be evaluated regardless of CONFIG_PPC_RADIX_MMU.
When CONFIG_PPC_RADIX_MMU is not set, mmu_has_feature(MMU_FTR_TYPE_RADIX) will evaluate to 'false' at build time because MMU_FTR_TYPE_RADIX wont be included in MMU_FTRS_POSSIBLE.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/62743846cbd493e5d9a02e197c2672a1d30df149.1620366342.git.christophe.leroy@csgroup.eu
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Revision tags: v5.10.34, v5.4.116, v5.10.33, v5.12, v5.10.32, v5.10.31, v5.10.30, v5.10.27, v5.10.26, v5.10.25, v5.10.24, v5.10.23, v5.10.22, v5.10.21, v5.10.20 |
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acdad8fb |
| 27-Feb-2021 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc: Force inlining of mmu_has_feature to fix build failure
The test robot has managed to generate a random config leading to following build failure:
LD .tmp_vmlinux.kallsyms1 powerpc64
powerpc: Force inlining of mmu_has_feature to fix build failure
The test robot has managed to generate a random config leading to following build failure:
LD .tmp_vmlinux.kallsyms1 powerpc64-linux-ld: arch/powerpc/mm/pgtable.o: in function `ptep_set_access_flags': pgtable.c:(.text.ptep_set_access_flags+0xf0): undefined reference to `hash__flush_tlb_page' powerpc64-linux-ld: arch/powerpc/mm/book3s32/mmu.o: in function `MMU_init_hw_patch': mmu.c:(.init.text+0x452): undefined reference to `patch__hash_page_A0' powerpc64-linux-ld: mmu.c:(.init.text+0x45e): undefined reference to `patch__hash_page_A0' powerpc64-linux-ld: mmu.c:(.init.text+0x46a): undefined reference to `patch__hash_page_A1' powerpc64-linux-ld: mmu.c:(.init.text+0x476): undefined reference to `patch__hash_page_A1' powerpc64-linux-ld: mmu.c:(.init.text+0x482): undefined reference to `patch__hash_page_A2' powerpc64-linux-ld: mmu.c:(.init.text+0x48e): undefined reference to `patch__hash_page_A2' powerpc64-linux-ld: mmu.c:(.init.text+0x49e): undefined reference to `patch__hash_page_B' powerpc64-linux-ld: mmu.c:(.init.text+0x4aa): undefined reference to `patch__hash_page_B' powerpc64-linux-ld: mmu.c:(.init.text+0x4b6): undefined reference to `patch__hash_page_C' powerpc64-linux-ld: mmu.c:(.init.text+0x4c2): undefined reference to `patch__hash_page_C' powerpc64-linux-ld: mmu.c:(.init.text+0x4ce): undefined reference to `patch__flush_hash_A0' powerpc64-linux-ld: mmu.c:(.init.text+0x4da): undefined reference to `patch__flush_hash_A0' powerpc64-linux-ld: mmu.c:(.init.text+0x4e6): undefined reference to `patch__flush_hash_A1' powerpc64-linux-ld: mmu.c:(.init.text+0x4f2): undefined reference to `patch__flush_hash_A1' powerpc64-linux-ld: mmu.c:(.init.text+0x4fe): undefined reference to `patch__flush_hash_A2' powerpc64-linux-ld: mmu.c:(.init.text+0x50a): undefined reference to `patch__flush_hash_A2' powerpc64-linux-ld: mmu.c:(.init.text+0x522): undefined reference to `patch__flush_hash_B' powerpc64-linux-ld: mmu.c:(.init.text+0x532): undefined reference to `patch__flush_hash_B' powerpc64-linux-ld: arch/powerpc/mm/book3s32/mmu.o: in function `update_mmu_cache': mmu.c:(.text.update_mmu_cache+0xa0): undefined reference to `add_hash_page' powerpc64-linux-ld: mm/memory.o: in function `zap_pte_range': memory.c:(.text.zap_pte_range+0x160): undefined reference to `flush_hash_pages' powerpc64-linux-ld: mm/memory.o: in function `handle_pte_fault': memory.c:(.text.handle_pte_fault+0x180): undefined reference to `hash__flush_tlb_page'
This is due to mmu_has_feature() not being inlined. See extract of build of mmu.c with -Winline:
In file included from ./include/linux/mm_types.h:19, from ./include/linux/mmzone.h:21, from ./include/linux/gfp.h:6, from ./include/linux/mm.h:10, from arch/powerpc/mm/book3s32/mmu.c:21: ./arch/powerpc/include/asm/mmu.h: In function 'find_free_bat': ./arch/powerpc/include/asm/mmu.h:231:20: warning: inlining failed in call to 'early_mmu_has_feature': call is unlikely and code size would grow [-Winline] 231 | static inline bool early_mmu_has_feature(unsigned long feature) | ^~~~~~~~~~~~~~~~~~~~~ ./arch/powerpc/include/asm/mmu.h:291:9: note: called from here 291 | return early_mmu_has_feature(feature); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The code relies on constant folding of MMU_FTRS_POSSIBLE at buildtime and elimination of non possible parts of code at compile time. For this to work, mmu_has_feature() and early_mmu_has_feature() must be inlined.
Fixes: 259149cf7c3c ("powerpc/32s: Only build hash code when CONFIG_PPC_BOOK3S_604 is selected") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/cf61345912c078c96f171afd0fcc48ef27cbdc3f.1614443418.git.christophe.leroy@csgroup.eu
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Revision tags: v5.10.19, v5.4.101, v5.10.18, v5.10.17, v5.11, v5.10.16, v5.10.15, v5.10.14, v5.10, v5.8.17 |
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#
44e9754d |
| 22-Oct-2020 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/32s: Make support for 603 and 604+ selectable
book3s/32 has two main families: - CPU with 603 cores that don't have HASH PTE table and perform SW TLB loading. - Other CPUs based on 604+ core
powerpc/32s: Make support for 603 and 604+ selectable
book3s/32 has two main families: - CPU with 603 cores that don't have HASH PTE table and perform SW TLB loading. - Other CPUs based on 604+ cores that have HASH PTE table.
This leads to some complex logic and additionnal code to support both. This makes sense for distribution kernels that aim at running on any CPU, but when you are fine tuning a kernel for an embedded 603 based board you don't need all the HASH logic.
Allow selection of support for each family, in order to opt out unneeded parts of code. At least one must be selected.
Note that some of the CPU supporting HASH also support SW TLB loading, however it is not supported by Linux kernel at the time being, because they do not have alternate registers in the TLB miss exception handlers.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8dde0cdb629a71abc29b0d85a52a86e920376cb6.1603348103.git.christophe.leroy@csgroup.eu
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f9158d58 |
| 22-Oct-2020 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/mm: Add mask of always present MMU features
On the same principle as commit 773edeadf672 ("powerpc/mm: Add mask of possible MMU features"), add mask for MMU features that are always there in
powerpc/mm: Add mask of always present MMU features
On the same principle as commit 773edeadf672 ("powerpc/mm: Add mask of possible MMU features"), add mask for MMU features that are always there in order to optimise out dead branches.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/4943775fbe91885eb3e09133b093aaf62e55c715.1603348103.git.christophe.leroy@csgroup.eu
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39c8bf2b |
| 16-Nov-2020 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc: Retire e200 core (mpc555x processor)
There is no defconfig selecting CONFIG_E200, and no platform.
e200 is an earlier version of booke, a predecessor of e500, with some particularities lik
powerpc: Retire e200 core (mpc555x processor)
There is no defconfig selecting CONFIG_E200, and no platform.
e200 is an earlier version of booke, a predecessor of e500, with some particularities like an unified cache instead of both an instruction cache and a data cache.
Remove it.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Scott Wood <oss@buserror.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/34ebc3ba2c768d97f363bd5f2deea2356e9ae127.1605589460.git.christophe.leroy@csgroup.eu
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8b8319b1 |
| 18-Oct-2020 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/44x: Don't support 440 when CONFIG_PPC_47x is set
As stated in platform/44x/Kconfig, CONFIG_PPC_47x is not compatible with 440 and 460 variants.
This is confirmed in asm/cache.h as L1_CACHE
powerpc/44x: Don't support 440 when CONFIG_PPC_47x is set
As stated in platform/44x/Kconfig, CONFIG_PPC_47x is not compatible with 440 and 460 variants.
This is confirmed in asm/cache.h as L1_CACHE_SHIFT is different for 47x, meaning a kernel built for 47x will not run correctly on a 440.
In cputable, opt out all 440 and 460 variants when CONFIG_PPC_47x is set. Also add a default match dedicated to 470.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/822833ce3dc10634339818f7d1ab616edf63b0c6.1603041883.git.christophe.leroy@csgroup.eu
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Revision tags: v5.8.16, v5.8.15 |
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0e8ff4f8 |
| 12-Oct-2020 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/mm: Desintegrate MMU_FTR_PPCAS_ARCH_V2
MMU_FTR_PPCAS_ARCH_V2 is defined in cpu_table.h as MMU_FTR_TLBIEL | MMU_FTR_16M_PAGE.
MMU_FTR_TLBIEL and MMU_FTR_16M_PAGE are defined in mmu.h
MMU_FT
powerpc/mm: Desintegrate MMU_FTR_PPCAS_ARCH_V2
MMU_FTR_PPCAS_ARCH_V2 is defined in cpu_table.h as MMU_FTR_TLBIEL | MMU_FTR_16M_PAGE.
MMU_FTR_TLBIEL and MMU_FTR_16M_PAGE are defined in mmu.h
MMU_FTR_PPCAS_ARCH_V2 is used only in mmu.h and it is used only once.
Remove MMU_FTR_PPCAS_ARCH_V2 and use directly MMU_FTR_TLBIEL | MMU_FTR_16M_PAGE
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/829ae1aed1d2fc6b5fc5818362e573dee5d6ecde.1602489852.git.christophe.leroy@csgroup.eu
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b68e3a3d |
| 12-Oct-2020 |
Christophe Leroy <christophe.leroy@csgroup.eu> |
powerpc/mm: MMU_FTR_NEED_DTLB_SW_LRU is only possible with CONFIG_PPC_83xx
Only mpc83xx will set MMU_FTR_NEED_DTLB_SW_LRU and its definition is enclosed in #ifdef CONFIG_PPC_83xx.
Make MMU_FTR_NEED
powerpc/mm: MMU_FTR_NEED_DTLB_SW_LRU is only possible with CONFIG_PPC_83xx
Only mpc83xx will set MMU_FTR_NEED_DTLB_SW_LRU and its definition is enclosed in #ifdef CONFIG_PPC_83xx.
Make MMU_FTR_NEED_DTLB_SW_LRU possible only when CONFIG_PPC_83xx is set.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/d01d7613664fafa43de1f1ae89924075bc24241c.1602489931.git.christophe.leroy@csgroup.eu
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d5b810b5 |
| 26-Nov-2020 |
Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> |
powerpc/book3s64/kuap: Rename MMU_FTR_RADIX_KUAP and MMU_FTR_KUEP
This is in preparation to adding support for kuap with hash translation. In preparation for that rename/move kuap related functions
powerpc/book3s64/kuap: Rename MMU_FTR_RADIX_KUAP and MMU_FTR_KUEP
This is in preparation to adding support for kuap with hash translation. In preparation for that rename/move kuap related functions to non radix names. Also move the feature bit closer to MMU_FTR_KUEP.
MMU_FTR_KUEP is renamed to MMU_FTR_BOOK3S_KUEP to indicate the feature is only relevant to BOOK3S_64
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201127044424.40686-8-aneesh.kumar@linux.ibm.com
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Revision tags: v5.9, v5.8.14, v5.8.13, v5.8.12, v5.8.11, v5.8.10, v5.8.9, v5.8.8, v5.8.7, v5.8.6, v5.4.62, v5.8.5, v5.8.4, v5.4.61, v5.8.3, v5.4.60, v5.8.2, v5.4.59, v5.8.1, v5.4.58, v5.4.57, v5.4.56, v5.8, v5.7.12, v5.4.55, v5.7.11, v5.4.54, v5.7.10, v5.4.53, v5.4.52, v5.7.9, v5.7.8, v5.4.51 |
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e10cc871 |
| 08-Jul-2020 |
Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> |
powerpc/book3s64/kuep: Add MMU_FTR_KUEP
This will be used to enable/disable Kernel Userspace Execution Prevention (KUEP).
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by:
powerpc/book3s64/kuep: Add MMU_FTR_KUEP
This will be used to enable/disable Kernel Userspace Execution Prevention (KUEP).
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200709032946.881753-15-aneesh.kumar@linux.ibm.com
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d3cd91fb |
| 08-Jul-2020 |
Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> |
powerpc/book3s64/pkeys: Add MMU_FTR_PKEY
Parse storage keys related device tree entry in early_init_devtree and enable MMU feature MMU_FTR_PKEY if pkeys are supported.
MMU feature is used instead o
powerpc/book3s64/pkeys: Add MMU_FTR_PKEY
Parse storage keys related device tree entry in early_init_devtree and enable MMU feature MMU_FTR_PKEY if pkeys are supported.
MMU feature is used instead of CPU feature because this enables us to group MMU_FTR_KUAP and MMU_FTR_PKEY in asm feature fixup code.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200709032946.881753-14-aneesh.kumar@linux.ibm.com
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029ab30b |
| 03-Jul-2020 |
Bharata B Rao <bharata@linux.ibm.com> |
powerpc/mm: Enable radix GTSE only if supported.
Make GTSE an MMU feature and enable it by default for radix. However for guest, conditionally enable it if hypervisor supports it via OV5 vector. Let
powerpc/mm: Enable radix GTSE only if supported.
Make GTSE an MMU feature and enable it by default for radix. However for guest, conditionally enable it if hypervisor supports it via OV5 vector. Let prom_init ask for radix GTSE only if the support exists.
Having GTSE as an MMU feature will make it easy to enable radix without GTSE. Currently radix assumes GTSE is enabled by default.
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200703053608.12884-2-bharata@linux.ibm.com
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Revision tags: v5.4.50, v5.7.7, v5.4.49, v5.7.6, v5.7.5, v5.4.48, v5.7.4, v5.7.3, v5.4.47, v5.4.46, v5.7.2, v5.4.45, v5.7.1, v5.4.44, v5.7, v5.4.43 |
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a3ea40d5 |
| 20-May-2020 |
Alistair Popple <alistair@popple.id.au> |
powerpc: Add POWER10 architected mode
PVR value of 0x0F000006 means we are arch v3.1 compliant (i.e. POWER10). This is used by phyp and kvm when booting as a pseries guest to detect the presence of
powerpc: Add POWER10 architected mode
PVR value of 0x0F000006 means we are arch v3.1 compliant (i.e. POWER10). This is used by phyp and kvm when booting as a pseries guest to detect the presence of new P10 features and to enable the appropriate hwcap and facility bits.
Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Cédric Le Goater <clg@kaod.org> [mpe: Fall through to __init_FSCR rather than duplicating it, drop hack to set current->thread.fscr now that is handled elsewhere.] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200521014341.29095-8-alistair@popple.id.au
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Revision tags: v5.4.42, v5.4.41, v5.4.40, v5.4.39 |
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fe4a6856 |
| 05-May-2020 |
Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> |
powerpc/pkeys: Avoid using lockless page table walk
Fetch pkey from vma instead of linux page table. Also document the fact that in some cases the pkey returned in siginfo won't be the same as the o
powerpc/pkeys: Avoid using lockless page table walk
Fetch pkey from vma instead of linux page table. Also document the fact that in some cases the pkey returned in siginfo won't be the same as the one we took keyfault on. Even with linux page table walk, we can end up in a similar scenario.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200505071729.54912-2-aneesh.kumar@linux.ibm.com
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