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2021-02-09powerpc/akebono: Fix unmet dependency errorsMichael Ellerman2-7/+5
The AKEBONO config has various selects under it, including some with user-selectable dependencies, which means those dependencies can be disabled. This leads to warnings from Kconfig. This can be seen with eg: $ make allnoconfig $ ./scripts/config --file build~/.config -k -e CONFIG_44x -k -e CONFIG_PPC_47x -e CONFIG_AKEBONO $ make olddefconfig WARNING: unmet direct dependencies detected for ATA Depends on [n]: HAS_IOMEM [=y] && BLOCK [=n] Selected by [y]: - AKEBONO [=y] && PPC_47x [=y] WARNING: unmet direct dependencies detected for NETDEVICES Depends on [n]: NET [=n] Selected by [y]: - AKEBONO [=y] && PPC_47x [=y] WARNING: unmet direct dependencies detected for ETHERNET Depends on [n]: NETDEVICES [=y] && NET [=n] Selected by [y]: - AKEBONO [=y] && PPC_47x [=y] WARNING: unmet direct dependencies detected for MMC_SDHCI Depends on [n]: MMC [=n] && HAS_DMA [=y] Selected by [y]: - AKEBONO [=y] && PPC_47x [=y] WARNING: unmet direct dependencies detected for MMC_SDHCI_PLTFM Depends on [n]: MMC [=n] && MMC_SDHCI [=y] Selected by [y]: - AKEBONO [=y] && PPC_47x [=y] The problem is that AKEBONO is using select to enable things that are not true dependencies, but rather things you probably want enabled in an AKEBONO kernel. That is what a defconfig is for. So drop those selects and instead move those symbols into the defconfig. This fixes all the kconfig warnings, and the result of make 44x/akebono_defconfig is the same before and after the patch. Reported-by: Yury Norov <yury.norov@gmail.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20210201012503.940145-1-mpe@ellerman.id.au
2021-02-09powerpc/64s: runlatch interrupt handling in CNicholas Piggin2-18/+7
There is no need for this to be in asm, use the new intrrupt entry wrapper. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-42-npiggin@gmail.com
2021-02-09powerpc/64s: move NMI soft-mask handling to CNicholas Piggin2-60/+25
Saving and restoring soft-mask state can now be done in C using the interrupt handler wrapper functions. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-41-npiggin@gmail.com
2021-02-09powerpc: move NMI entry/exit code into wrapperNicholas Piggin4-46/+38
This moves the common NMI entry and exit code into the interrupt handler wrappers. This changes the behaviour of soft-NMI (watchdog) and HMI interrupts, and also MCE interrupts on 64e, by adding missing parts of the NMI entry to them. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-40-npiggin@gmail.com
2021-02-09powerpc/pseries/mce: restore msr before returning from handlerNicholas Piggin1-4/+15
The pseries real-mode machine check handler can enable the MMU, and return from the handler with the MMU still enabled. This works, but real-mode handler wrapper exit handlers want to rely on the MMU being in real-mode. So change the pseries handler to restore the MSR after it has finished virtual mode tasks. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1612702361.lm7fqo56re.astroid@bobo.none
2021-02-09powerpc/64: entry cpu time accounting in CNicholas Piggin4-30/+6
There is no need for this to be in asm, use the new interrupt entry wrapper. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-39-npiggin@gmail.com
2021-02-09powerpc/64: move account_stolen_time into its own functionNicholas Piggin2-9/+15
This will be used by interrupt entry as well. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-38-npiggin@gmail.com
2021-02-09powerpc/64s: reconcile interrupts in CNicholas Piggin2-30/+11
There is no need for this to be in asm, use the new intrrupt entry wrapper. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-37-npiggin@gmail.com
2021-02-09powerpc/64s: move context tracking exit to interrupt exit pathNicholas Piggin2-5/+47
The interrupt handler wrapper functions are not the ideal place to maintain context tracking because after they return, the low level exit code must then determine if there are interrupts to replay, or if the task should be preempted, etc. Those paths (e.g., schedule_user) include their own exception_enter/exit pairs to fix this up but it's a bit hacky (see schedule_user() comments). Ideally context tracking will go to user mode only when there are no more interrupts or context switches or other exit processing work to handle. 64e can not do this because it does not use the C interrupt exit code. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-36-npiggin@gmail.com
2021-02-09powerpc: handle irq_enter/irq_exit in interrupt handler wrappersNicholas Piggin6-18/+8
Move irq_enter/irq_exit into asynchronous interrupt handler wrappers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-35-npiggin@gmail.com
2021-02-09powerpc/64: add context tracking to asynchronous interruptsNicholas Piggin1-0/+2
Previously context tracking was not done for asynchronous interrupts, (those that run in interrupt context), and if those would cause a reschedule when they exit, then scheduling functions (schedule_user, preempt_schedule_irq) call exception_enter/exit to fix this up and exit user context. This is a hack we would like to get away from, so do context tracking for asynchronous interrupts too. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-34-npiggin@gmail.com
2021-02-09powerpc/64: context tracking move to interrupt wrappersNicholas Piggin4-62/+17
This moves exception_enter/exit calls to wrapper functions for synchronous interrupts. More interrupt handlers are covered by this than previously. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-33-npiggin@gmail.com
2021-02-09powerpc/64s/hash: improve context tracking of hash faultsNicholas Piggin3-14/+33
This moves the 64s/hash context tracking from hash_page_mm() to __do_hash_fault(), so it's no longer called by OCXL / SPU accelerators, which was certainly the wrong thing to be doing, because those callers are not low level interrupt handlers, so should have entered a kernel context tracking already. Then remain in kernel context for the duration of the fault, rather than enter/exit for the hash fault then enter/exit for the page fault, which is pointless. Even still, calling exception_enter/exit in __do_hash_fault seems questionable because that's touching per-cpu variables, tracing, etc., which might have been interrupted by this hash fault or themselves cause hash faults. But maybe I miss something because hash_page_mm very deliberately calls trace_hash_fault too, for example. So for now go with it, it's no worse than before, in this regard. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-32-npiggin@gmail.com
2021-02-09powerpc/64: context tracking remove _TIF_NOHZNicholas Piggin5-38/+47
Add context tracking to the system call handler explicitly, and remove _TIF_NOHZ. This improves system call performance when nohz_full is enabled. On a POWER9, gettid scv system call cost on a nohz_full CPU improves from 1129 cycles to 1004 cycles and on a housekeeping CPU from 550 cycles to 430 cycles. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-31-npiggin@gmail.com
2021-02-09powerpc: add interrupt_cond_local_irq_enable helperNicholas Piggin3-20/+15
Simple helper for synchronous interrupt handlers (i.e., process-context) to enable interrupts if it was taken in an interrupts-enabled context. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-30-npiggin@gmail.com
2021-02-09powerpc: convert interrupt handlers to use wrappersNicholas Piggin24-101/+169
Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-29-npiggin@gmail.com
2021-02-09powerpc/traps: factor common code from program check and emulation assistNicholas Piggin1-14/+24
Move the program check handling into a function called by both, rather than have the emulation assist handler call the program check handler. This allows each of these handlers to be implemented with "interrupt wrappers" in a later change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1612702475.d6qyt6qtfy.astroid@bobo.none
2021-02-09powerpc: add interrupt wrapper entry / exit stub functionsNicholas Piggin1-0/+66
These will be used by subsequent patches. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-28-npiggin@gmail.com
2021-02-09powerpc: interrupt handler wrapper functionsNicholas Piggin1-0/+169
Add wrapper functions (derived from x86 macros) for interrupt handler functions. This allows interrupt entry code to be written in C. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-27-npiggin@gmail.com
2021-02-09powerpc: improve handling of unrecoverable system resetNicholas Piggin1-1/+4
If an unrecoverable system reset hits in process context, the system does not have to panic. Similar to machine check, call nmi_exit() before die(). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-26-npiggin@gmail.com
2021-02-09powerpc/mce: ensure machine check handler always tests RINicholas Piggin1-1/+1
A machine check that is handled must still check MSR[RI] for recoverability of the interrupted context. Without this patch it's possible for a handled machine check to return to a context where it has clobbered live registers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-25-npiggin@gmail.com
2021-02-09powerpc: introduce die_mceNicholas Piggin4-8/+18
As explained by commit daf00ae71dad ("powerpc/traps: restore recoverability of machine_check interrupts"), die() can't be called from within nmi_enter to nicely kill a process context that was interrupted. nmi_exit must be called first. This adds a function die_mce which takes care of this for machine check handlers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-24-npiggin@gmail.com
2021-02-09powerpc/cell: tidy up pervasive declarationsNicholas Piggin2-3/+1
These are declared in ras.h and defined in ras.c so remove them from pervasive.h Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-23-npiggin@gmail.com
2021-02-09powerpc: add and use unknown_async_exceptionNicholas Piggin4-5/+18
This is currently the same as unknown_exception, but it will diverge after interrupt wrappers are added and code moved out of asm into the wrappers (e.g., async handlers will check FINISH_NAP). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-22-npiggin@gmail.com
2021-02-09powerpc/time: move timer_broadcast_interrupt prototype to asm/time.hNicholas Piggin2-1/+2
Interrupt handler prototypes are going to be rearranged in a future patch, so tidy this out of the way first. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-21-npiggin@gmail.com
2021-02-09powerpc/perf: move perf irq/nmi handling details into traps.cNicholas Piggin3-59/+32
This is required in order to allow more significant differences between NMI type interrupt handlers and regular asynchronous handlers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-20-npiggin@gmail.com
2021-02-09powerpc/traps: add NOKPROBE_SYMBOL for sreset and mceNicholas Piggin1-0/+2
These NMIs could fire any time including inside kprobe code, so exclude them from kprobes. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-19-npiggin@gmail.com
2021-02-09powerpc/64s: slb comment updateNicholas Piggin1-13/+15
This makes a small improvement to the description of the SLB interrupt environment. Move the memory access restrictions into one paragraph, and the interrupt restrictions into the next rather than mix them. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-18-npiggin@gmail.com
2021-02-09powerpc/mm: Remove stale do_page_fault comment referring to SLB faultsNicholas Piggin1-7/+5
SLB faults no longer call do_page_fault, this was removed somewhere between 2.6.0 and 2.6.12. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-17-npiggin@gmail.com
2021-02-09powerpc/64s: split do_hash_faultNicholas Piggin1-23/+33
This is required for subsequent interrupt wrapper implementation. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-16-npiggin@gmail.com
2021-02-09powerpc/64s: move bad_page_fault handling to CNicholas Piggin2-12/+4
This simplifies code, and it is also useful when introducing interrupt handler wrappers when introducing wrapper functionality that doesn't cope with asm entry code calling into more than one handler function. 32-bit and 64e still have some such cases, which limits some ways they can use interrupt wrappers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-15-npiggin@gmail.com
2021-02-09powerpc: rearrange do_page_fault error case to be inside exception_enterNicholas Piggin1-9/+14
This keeps the context tracking over the entire interrupt handler which helps later with moving context tracking into interrupt wrappers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-14-npiggin@gmail.com
2021-02-09powerpc/64s: add do_bad_page_fault_segv handlerNicholas Piggin3-3/+9
This function acts like an interrupt handler so it needs to follow the standard interrupt handler function signature which will be introduced in a future change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-13-npiggin@gmail.com
2021-02-09powerpc: bad_page_fault get registers from regsNicholas Piggin8-14/+12
Similar to the previous patch this makes interrupt handler function types more regular so they can be wrapped with the next patch. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-12-npiggin@gmail.com
2021-02-09powerpc/32: transfer can avoid saving r4/r5 over trace callNicholas Piggin1-6/+1
Now that handlers get all registers from pt_regs, r4 and r5 are no longer live here and may be clobbered. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-11-npiggin@gmail.com
2021-02-09powerpc: DebugException remove argsNicholas Piggin4-3/+6
Like other interrupt handler conversions, switch to getting registers from the pt_regs argument. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-10-npiggin@gmail.com
2021-02-09powerpc: do_break get registers from regsNicholas Piggin3-9/+6
Similar to the previous patch this makes interrupt handler function types more regular so they can be wrapped with the next patch. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-9-npiggin@gmail.com
2021-02-09powerpc/fsl_booke/32: CacheLockingException remove argsNicholas Piggin2-5/+6
Like other interrupt handler conversions, switch to getting registers from the pt_regs argument. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-8-npiggin@gmail.com
2021-02-09powerpc: remove arguments from fault handler functionsNicholas Piggin12-43/+33
Make mm fault handlers all just take the pt_regs * argument and load DAR/DSISR from that. Make those that return a value return long. This is done to make the function signatures match other handlers, which will help with a future patch to add wrappers. Explicit arguments could be added for performance but that would require more wrapper macro variants. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-7-npiggin@gmail.com
2021-02-09powerpc/64s: move the hash fault handling logic to CNicholas Piggin3-127/+78
The fault handling still has some complex logic particularly around hash table handling, in asm. Implement most of this in C. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-6-npiggin@gmail.com
2021-02-09powerpc/64s: move DABR match out of handle_page_faultNicholas Piggin1-18/+16
Similar to the 32/s change, move the test and call to the do_break handler to the DSI. Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-5-npiggin@gmail.com
2021-02-09powerpc/32s: move DABR match out of handle_page_faultChristophe Leroy2-15/+3
handle_page_fault() has some code dedicated to book3s/32 to call do_break() when the DSI is a DABR match. On other platforms, do_break() is handled separately. Do the same for book3s/32, do it earlier in the process of DSI. This change also avoid doing the test on ISI. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-4-npiggin@gmail.com
2021-02-09KVM: PPC: Book3S HV: Context tracking exit guest context before enabling irqsNicholas Piggin1-2/+4
Interrupts that occur in kernel mode expect that context tracking is set to kernel. Enabling local irqs before context tracking switches from guest to host means interrupts can come in and trigger warnings about wrong context, and possibly worse. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-3-npiggin@gmail.com
2021-02-09powerpc/64s: interrupt exit improve bounding of interrupt recursionNicholas Piggin1-22/+33
When replaying pending soft-masked interrupts when an interrupt returns to an irqs-enabled context, there is a special case required if this was an asynchronous interrupt to avoid unbounded interrupt recursion. This case was not tested for in the case the asynchronous interrupt hit in user context, because a subsequent nested interrupt would by definition hit in kernel mode, which then exits via the kernel path which does test this case. There is no reason to allow this for such interrupts. While recursion is bounded at the next level, it's simpler and uses less stack to apply the replay logic consistently. This also expands the comment which was really pretty poor and didn't explain the problem (I can say that because I wrote it). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-2-npiggin@gmail.com
2021-02-09powerpc/pasemi: Move PHB discoveryOliver O'Halloran1-2/+1
Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201103043523.916109-17-oohall@gmail.com
2021-02-09powerpc/embedded6xx/mve5100: Move PHB discoveryOliver O'Halloran2-7/+14
Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201103043523.916109-16-oohall@gmail.com
2021-02-09powerpc/embedded6xx/mpc7448: Move PHB discoveryOliver O'Halloran1-5/+9
Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201103043523.916109-15-oohall@gmail.com
2021-02-09powerpc/embedded6xx/linkstation: Move PHB discoveryOliver O'Halloran1-3/+7
Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201103043523.916109-14-oohall@gmail.com
2021-02-09powerpc/embedded6xx/holly: Move PHB discoveryOliver O'Halloran1-3/+7
Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201103043523.916109-13-oohall@gmail.com
2021-02-09powerpc/chrp: Move PHB discoveryOliver O'Halloran2-11/+9
Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201103043523.916109-12-oohall@gmail.com
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