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2020-10-11um: Fix incorrect assumptions about max pid lengthMaciej Żenczykowski
pids are no longer limited to 16-bits, bump to 32-bits, ie. 9 decimal characters. Additionally sizeof("/") already returns 2 - ie. it already accounts for trailing zero. Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Linux UM Mailing List <linux-um@lists.infradead.org> Signed-off-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: Remove dead usage of TIF_IA32Gabriel Krisman Bertazi
This seems like a dead artifact since TIF_IA32 is not even defined as a TI flag for UM. Looking back in git history, it made sense in the old days, but it is apparently not used since UM was split out of the x86 arch/. It is also going away from the x86 tree soon. Also, I think the variable clean up it performs is not needed as 64-bit UML doesn't run 32-bit binaries as far as I can tell, and 32-bit UML has 32-bit ulong. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: Remove redundant NULL checkLi Heng
Fix below warnings reported by coccicheck: ./arch/um/drivers/vector_user.c:403:2-7: WARNING: NULL check before some freeing functions is not needed. Fixes: bc8f8e4e6e7a ("um: Add a generic "fd" vector transport") Signed-off-by: Li Heng <liheng40@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: change sigio_spinlock to a mutexJohannes Berg
Lockdep complains at boot: ============================= [ BUG: Invalid wait context ] 5.7.0-05093-g46d91ecd597b #98 Not tainted ----------------------------- swapper/1 is trying to lock: 0000000060931b98 (&desc[i].request_mutex){+.+.}-{3:3}, at: __setup_irq+0x11d/0x623 other info that might help us debug this: context-{4:4} 1 lock held by swapper/1: #0: 000000006074fed8 (sigio_spinlock){+.+.}-{2:2}, at: sigio_lock+0x1a/0x1c stack backtrace: CPU: 0 PID: 1 Comm: swapper Not tainted 5.7.0-05093-g46d91ecd597b #98 Stack: 7fa4fab0 6028dfd1 0000002a 6008bea5 7fa50700 7fa50040 7fa4fac0 6028e016 7fa4fb50 6007f6da 60959c18 00000000 Call Trace: [<60023a0e>] show_stack+0x13b/0x155 [<6028e016>] dump_stack+0x2a/0x2c [<6007f6da>] __lock_acquire+0x515/0x15f2 [<6007eb50>] lock_acquire+0x245/0x273 [<6050d9f1>] __mutex_lock+0xbd/0x325 [<6050dc76>] mutex_lock_nested+0x1d/0x1f [<6008e27e>] __setup_irq+0x11d/0x623 [<6008e8ed>] request_threaded_irq+0x169/0x1a6 [<60021eb0>] um_request_irq+0x1ee/0x24b [<600234ee>] write_sigio_irq+0x3b/0x76 [<600383ca>] sigio_broken+0x146/0x2e4 [<60020bd8>] do_one_initcall+0xde/0x281 Because we hold sigio_spinlock and then get into requesting an interrupt with a mutex. Change the spinlock to a mutex to avoid that. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: time-travel: Return the sequence number in ACK messagesJohannes Berg
For external time travel, the protocol says to return the incoming sequence number in the ACK message to aid debugging, so do that. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: time-travel: Fix IRQ handling in time_travel_handle_message()Johannes Berg
As the comment here indicates, we need to do the polling in the idle loop without blocking interrupts, since interrupts can be vhost-user messages that we must process even while in our idle loop. I don't know why I explained one thing and implemented another, but we have indeed observed random hangs due to this, depending on the timing of the messages. Fixes: 88ce64249233 ("um: Implement time-travel=ext") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: Allow static linking for non-glibc implementationsIgnat Korchagin
It is possible to produce a statically linked UML binary with UML_NET_VECTOR, UML_NET_VDE and UML_NET_PCAP options enabled using alternative libc implementations, which do not rely on NSS, such as musl. Allow static linking in this case. Signed-off-by: Ignat Korchagin <ignat@cloudflare.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Tested-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: Some fixes to build UML with muslIgnat Korchagin
musl toolchain and headers are a bit more strict. These fixes enable building UML with musl as well as seem not to break on glibc. Signed-off-by: Ignat Korchagin <ignat@cloudflare.com> Tested-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: vector: Use GFP_ATOMIC under spin lockTiezhu Yang
Use GFP_ATOMIC instead of GFP_KERNEL under spin lock to fix possible sleep-in-atomic-context bugs. Fixes: 9807019a62dc ("um: Loadable BPF "Firmware" for vector drivers") Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11um: Fix null pointer dereference in vector_user_bpfGaurav Singh
The bpf_prog is being checked for !NULL after uml_kmalloc but later its used directly for example: bpf_prog->filter = bpf and is also later returned upon success. Fix this, do a NULL check and return right away. Signed-off-by: Gaurav Singh <gaurav1086@gmail.com> Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11Merge tag 'spi-nor/for-5.10' of ↵Richard Weinberger
git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux into mtd/next SPI NOR core changes: - Support for Winbond w25q64jwm flash - Enable 4K sector support for mx25l12805d SPI NOR controller drivers changes: - intel-spi: - Add Alder Lake-S PCI ID
2020-10-11arm64: dts: fsl-ls1028a-rdb: Specify in-band mode for ENETC port 0Claudiu Manoil
As part of the transition of the enetc ethernet driver from phylib to phylink, the in-band operation mode of the SGMII interface from enetc port 0 needs to be specified explicitly for phylink. Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-11Merge tag 'x86-urgent-2020-10-11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Two fixes: - Fix a (hopefully final) IRQ state tracking bug vs MCE handling - Fix a documentation link" * tag 'x86-urgent-2020-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation/x86: Fix incorrect references to zero-page.txt x86/mce: Use idtentry_nmi_enter/exit()
2020-10-11Merge tag 'irqchip-5.10' of ↵Thomas Gleixner
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull irqchip updates from Marc Zyngier: Core changes: - Allow irq retriggering to follow a hierarchy - Allow interrupt hierarchies to be trimmed at allocation time - Allow interrupts to be hidden from /proc/interrupts (IPIs) - Introduce stub for set_handle_irq() when !GENERIC_IRQ_MULTI_HANDLER - New per-cpu IPI handling flow Architecture changes: - Move arm/arm64 IPI handling to the core interrupt code, removing the home brewed accounting Driver updates: - New driver for the MStar (and more recently Mediatek) platforms - New driver for the Actions Owl SIRQ controller - New driver for the TI PRUSS infrastructure - Wake-up support for the Qualcomm PDC controller - Primary interrupt controller support for the Designware APB ICTL - Convert the IPI code for GIC, GICv3, hip04, armada-270-xp and bcm2836 to using standard interrupts - Improve GICv3 pseudo-NMI support to deal with both non-secure and secure priorities on arm64 - Convert the GIC/GICv3 drivers to using HW-based irq retrigger - A sprinkling of dev_err_probe() conversion - A set of NVIDIA Tegra fixes for interrupt hierarchy corruption - A reset fix for the Loongson HTVEC driver - A couple of error handling fixes in the TI SCI drivers
2020-10-09s390/uaccess: fix indentationHeiko Carstens
Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-10-09s390/uaccess: add default cases for __put_user_fn()/__get_user_fn()Heiko Carstens
Add default cases for __put_user_fn()/__get_user_fn(). This doesn't fix anything since the functions are only called with sane values. However we get rid of smatch warnings: ./arch/s390/include/asm/uaccess.h:143 __get_user_fn() error: uninitialized symbol 'rc'. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-10-09s390/kprobes: move insn_page to text segmentHeiko Carstens
Move the in-kernel kprobes insn page to text segment. Rationale: having that page in rw data segment is suboptimal, since as soon as a kprobe is set, this will split the 1:1 kernel mapping for a single page which get new permissions. Note: there is always at least one kprobe present for the kretprobe trampoline; so the mapping will always be split into smaller 4k mappings because of this. Moving the kprobes insn page into text segment makes sure that the page is mapped RO/X in any case, and avoids that the 1:1 mapping is split. The kprobe insn_page is defined as a dummy function which is filled with "br %r14" instructions. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-10-09Merge tag 'riscv-for-linus-5.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: "Two fixes this week: - A fix to actually reserve the device tree's memory. Without this the device tree can be overwritten on systems that don't otherwise reserve it. This issue should only manifest on !MMU systems. - A workaround for a BUG() that triggers when the memory that originally contained initdata is freed and later repurposed. This triggers a BUG() on builds that had HARDENED_USERCOPY enabled" * tag 'riscv-for-linus-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Fixup bootup failure with HARDENED_USERCOPY RISC-V: Make sure memblock reserves the memory containing DT
2020-10-09kbuild: explicitly specify the build id styleBill Wendling
ld's --build-id defaults to "sha1" style, while lld defaults to "fast". The build IDs are very different between the two, which may confuse programs that reference them. Signed-off-by: Bill Wendling <morbo@google.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-10-09Merge remote-tracking branch 'asoc/for-5.10' into asoc-nextMark Brown
2020-10-09Revert "arm64: initialize per-cpu offsets earlier"Will Deacon
This reverts commit 353e228eb355be5a65a3c0996c774a0f46737fda. Qian Cai reports that TX2 no longer boots with his .config as it appears that task_cpu() gets instrumented and used before KASAN has been initialised. Although Mark has a proposed fix, let's take the safe option of reverting this for now and sorting it out properly later. Link: https://lore.kernel.org/r/711bc57a314d8d646b41307008db2845b7537b3d.camel@redhat.com Reported-by: Qian Cai <cai@redhat.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will@kernel.org>
2020-10-09Merge branch 'locking/urgent' into locking/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-10-09Merge branch 'for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull v5.10 RCU changes from Paul E. McKenney: - Debugging for smp_call_function(). - Strict grace periods for KASAN. The point of this series is to find RCU-usage bugs, so the corresponding new RCU_STRICT_GRACE_PERIOD Kconfig option depends on both DEBUG_KERNEL and RCU_EXPERT, and is further disabled by dfefault. Finally, the help text includes a goodly list of scary caveats. - New smp_call_function() torture test. - Torture-test updates. - Documentation updates. - Miscellaneous fixes. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-10-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Small conflict around locking in rxrpc_process_event() - channel_lock moved to bundle in next, while state lock needs _bh() from net. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-08seccomp: Move config option SECCOMP to arch/KconfigYiFei Zhu
In order to make adding configurable features into seccomp easier, it's better to have the options at one single location, considering especially that the bulk of seccomp code is arch-independent. An quick look also show that many SECCOMP descriptions are outdated; they talk about /proc rather than prctl. As a result of moving the config option and keeping it default on, architectures arm, arm64, csky, riscv, sh, and xtensa did not have SECCOMP on by default prior to this and SECCOMP will be default in this change. Architectures microblaze, mips, powerpc, s390, sh, and sparc have an outdated depend on PROC_FS and this dependency is removed in this change. Suggested-by: Jann Horn <jannh@google.com> Link: https://lore.kernel.org/lkml/CAG48ez1YWz9cnp08UZgeieYRhHdqh-ch7aNwc4JRBnGyrmgfMg@mail.gmail.com/ Signed-off-by: YiFei Zhu <yifeifz2@illinois.edu> [kees: added HAVE_ARCH_SECCOMP help text, tweaked wording] Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/9ede6ef35c847e58d61e476c6a39540520066613.1600951211.git.yifeifz2@illinois.edu
2020-10-08Merge tag 'for-linus-5.9b-rc9-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fix from Juergen Gross: "One fix for a regression when booting as a Xen guest on ARM64 introduced probably during the 5.9 cycle. It is very low risk as it is modifying Xen specific code only. The exact commit introducing the bug hasn't been identified yet, but everything was fine in 5.8 and only in 5.9 some configurations started to fail" * tag 'for-linus-5.9b-rc9-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: arm/arm64: xen: Fix to convert percpu address to gfn correctly
2020-10-08arm: disable frequency invariance for CONFIG_BL_SWITCHERIonela Voinescu
big.LITTLE switching complicates the setting of a correct cpufreq-based frequency invariance scale factor due to (as observed in drivers/cpufreq/vexpress-spc-cpufreq.c): - Incorrect current and maximum frequencies as a result of the exposure of a virtual frequency table to the cpufreq core, - Missed updates as a result of asynchronous frequency adjustments caused by frequency changes in other CPU pairs. Given that its functionality is atypical in regards to frequency invariance and this is an old technology, disable frequency invariance for when big.LITTLE switching is configured in to prevent incorrect scale setting. Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com> Suggested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-10-08cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale()Ionela Voinescu
Compared to other arch_* functions, arch_set_freq_scale() has an atypical weak definition that can be replaced by a strong architecture specific implementation. The more typical support for architectural functions involves defining an empty stub in a header file if the symbol is not already defined in architecture code. Some examples involve: - #define arch_scale_freq_capacity topology_get_freq_scale - #define arch_scale_freq_invariant topology_scale_freq_invariant - #define arch_scale_cpu_capacity topology_get_cpu_scale - #define arch_update_cpu_topology topology_update_cpu_topology - #define arch_scale_thermal_pressure topology_get_thermal_pressure - #define arch_set_thermal_pressure topology_set_thermal_pressure Bring arch_set_freq_scale() in line with these functions by renaming it to topology_set_freq_scale() in the arch topology driver, and by defining the arch_set_freq_scale symbol to point to the new function for arm and arm64. While there are other users of the arch_topology driver, this patch defines arch_set_freq_scale for arm and arm64 only, due to their existing definitions of arch_scale_freq_capacity. This is the getter function of the frequency invariance scale factor and without a getter function, the setter function - arch_set_freq_scale() has not purpose. Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com> (BL_SWITCHER and topology parts) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-10-08powerpc/time: Make get_tb() common to PPC32 and PPC64Christophe Leroy
mftbu() is always defined now, so the #ifdef can be removed and replaced by an IS_ENABLED(CONFIG_PPC64) inside the PPC32 version of get_tb(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/47e49717d2643169ffcbe5d507f184cf49f0fe95.1601556145.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/time: Make get_tbl() common to PPC32 and PPC64Christophe Leroy
On PPC64, get_tbl() is defined as an alias of get_tb() which return the result of mftb(). That exactly the same as what the PPC32 version does. We don't need two versions. Remove the PPC64 definition of get_tbl() and use the PPC32 version for both. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/a8eaabb87d69534e533ebac805163e08146e05bd.1601556145.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/time: Remove get_tbu()Christophe Leroy
get_tbu() is redundant with mftbu() and is not used anymore. Remove it. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1746e2d11ea90c3f45877e1fcc6c79ce96cf6b98.1601556145.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/time: Avoid using get_tbl() and get_tbu() internallyChristophe Leroy
get_tbl() is confusing as it returns the content of TBL register on PPC32 but the concatenation of TBL and TBU on PPC64. Use mftb() instead. Do the same with get_tbu() for consistency allthough it's name is less confusing. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/41573406a4eab98838decaa91649086fef1e6119.1601556145.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/time: Make mftb() common to PPC32 and PPC64Christophe Leroy
No need to have two versions that are identical. CONFIG_PPC_CELL is only selected by PPC64 targets. CONFIG_E500 is the only PPC64 target selecting CONFIG_FSL_BOOK3E. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/6bf23ec744aab4ba63506a011f6a145ea35d620d.1601556145.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/time: Rename mftbl() to mftb()Christophe Leroy
On PPC64, we have mftb(). On PPC32, we have mftbl() and an #define mftb() mftbl(). mftb() and mftbl() are equivalent, their purpose is to read the content of SPRN_TRBL, as returned by 'mftb' simplified instruction. binutils seems to define 'mftbl' instruction as an equivalent of 'mftb'. However in both 32 bits and 64 bits documentation, only 'mftb' is defined, and when performing a disassembly with objdump, the displayed instruction is 'mftb' No need to have two ways to do the same thing with different names, rename mftbl() to have only mftb(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/94dc68d3d9ef9eb549796d4b938b6ba0305a049b.1601556145.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/32s: Remove #ifdef CONFIG_PPC_BOOK3S_32 in head_book3s_32.SChristophe Leroy
head_book3s_32.S is only built when CONFIG_PPC_BOOK3S_32 is selected. Remove all conditions based on CONFIG_PPC_BOOK3S_32 in the file. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1b68632425d8866d147aea9005004e4594672211.1601975100.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/32s: Rename head_32.S to head_book3s_32.SChristophe Leroy
Unlike PPC64 which had a single head_64.S, PPC32 are multiple ones. There is the head_32.S, selected by default based on the value of BITS and overridden based on some CONFIG_ values. This leads to thinking that it may be selected by different types of PPC32 platform but indeed it ends up being selected by book3s/32 only. Make that explicit by: - Not doing any default selection based on BITS. - Renaming head_32.S to head_book3s_32.S. - Get head_book3s_32.S selected only by CONFIG_PPC_BOOK3S_32. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Fix head_$(BITS).o reference in arch/powerpc/Makefile] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/319d379f696412681c66a987cc75e6abf8f958d2.1601975100.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/32s: Setup the early hash table at all time.Christophe Leroy
At the time being, an early hash table is set up when CONFIG_KASAN is selected. There is nothing wrong with setting such an early hash table all the time, even if it is not used. This is a statically allocated 256 kB table which lies in the init data section. This makes the code simpler and may in the future allow to setup early IO mappings with fixmap instead of hard coding BATs. Put create_hpte() and flush_hash_pages() in the .ref.text section in order to avoid warning for the reference to early_hash[]. This reference is removed by MMU_init_hw_patch() before init memory is freed. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/b8f8101c368b8a6451844a58d7bd7d83c14cf2aa.1601566529.git.christophe.leroy@csgroup.eu
2020-10-08powerpc/time: Remove ifdef in get_dec() and set_dec()Christophe Leroy
Move SPRN_PIT definition in reg.h. This allows to remove ifdef in get_dec() and set_dec() and makes them more readable. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/3c9a6eb0fc040868ac59be66f338d08fd017668d.1601549945.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Remove get_tb_or_rtc()Christophe Leroy
601 is gone, get_tb_or_rtc() is equivalent to get_tb(). Replace the former by the later. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/3e8a13ee83418630c753c30cb722ae682d5b2d39.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Remove __USE_RTC()Christophe Leroy
Now that PowerPC 601 is gone, __USE_RTC() is never true. Remove it. That also leads to removing get_rtc() and get_rtcl() Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/4757e1ed21fe1968c761ae081d1f3d790a9673f8.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Tidy up a bit after removal of PowerPC 601.Christophe Leroy
The removal of the 601 left some standalone blocks from former if/else. Drop the { } and re-indent. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/31c4cd093963f22831bf388449056ee045533d3b.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Remove support for PowerPC 601Christophe Leroy
PowerPC 601 has been retired. Remove all associated specific code. CPU_FTRS_PPC601 has CPU_FTR_COHERENT_ICACHE and CPU_FTR_COMMON. CPU_FTR_COMMON is already present via other CPU_FTRS. None of the remaining CPU selects CPU_FTR_COHERENT_ICACHE. So CPU_FTRS_PPC601 can be removed from the possible features, hence can be removed completely. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/60b725d55e21beec3335175c20b77903ff98284f.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Remove PowerPC 601Christophe Leroy
Powerpc 601 is 25 years old. It is not selected by any defconfig. It requires a lot of special handling as it deviates from the standard 6xx. Retire it. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/00a6948d659e017f8ca63437d1384222c3aede57.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Drop SYNC_601() ISYNC_601() and SYNC()Christophe Leroy
Those macros are now empty at all time. Drop them. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7990bb63fc53e460bfa94f8040184881d9e6fbc3.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Remove CONFIG_PPC601_SYNC_FIXChristophe Leroy
This config option isn't in any defconfig. The very first versions of Powerpc 601 have a bug which requires additional sync before and/or after some instructions. This was more than 25 years ago and time has come to retire those buggy versions of the 601 from the kernel. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/55b46bff16705b1ae7bf0a60ccd522b1010ebf75.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08powerpc: Remove SYNC on non 6xxChristophe Leroy
SYNC is usefull for Powerpc 601 only. On everything else, SYNC is empty. Remove it from code that is not made to run on 6xx. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/27951fa6c9a8f80724d1bc81a6117ac32343a55d.1601362098.git.christophe.leroy@csgroup.eu
2020-10-08x86/mce: Allow for copy_mc_fragile symbol checksum to be generatedBorislav Petkov
Add asm/mce.h to asm/asm-prototypes.h so that that asm symbol's checksum can be generated in order to support CONFIG_MODVERSIONS with it and fix: WARNING: modpost: EXPORT symbol "copy_mc_fragile" [vmlinux] version \ generation failed, symbol will not be versioned. For reference see: 4efca4ed05cb ("kbuild: modversions for EXPORT_SYMBOL() for asm") 334bb7738764 ("x86/kbuild: enable modversions for symbols exported from asm") Fixes: ec6347bb4339 ("x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()") Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20201007111447.GA23257@zn.tnic
2020-10-08MIPS: SGI-IP28: disable use of ll/sc in kernelThomas Bogendoerfer
SGI-IP28 systems only use broken R10k rev 2.5 CPUs, which could lock up, if ll/sc sequences are issued in certain order. Since those systems are all non-SMP, we can disable ll/sc usage in kernel. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-08MIPS: tx49xx: move tx4939_add_memory_regions into only userThomas Bogendoerfer
tx4939_add_memory_regions() is only used in txx9/rbtx4939/prom.c. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-08powerpc/papr_scm: Add PAPR command family to pass-through command-setVaibhav Jain
Add NVDIMM_FAMILY_PAPR to the list of valid 'dimm_family_mask' acceptable by papr_scm. This is needed as since commit 92fe2aa859f5 ("libnvdimm: Validate command family indices") libnvdimm performs a validation of 'nd_cmd_pkg.nd_family' received as part of ND_CMD_CALL processing to ensure only known command families can use the general ND_CMD_CALL pass-through functionality. Without this change the ND_CMD_CALL pass-through targeting NVDIMM_FAMILY_PAPR error out with -EINVAL. Fixes: 92fe2aa859f5 ("libnvdimm: Validate command family indices") Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200913211904.24472-1-vaibhav@linux.ibm.com
generated by cgit (git 2.34.1) at 2025-09-22 14:51:55 +0000