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linux/arch/powerpc
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Anders Roxell fe663df782 powerpc/lib/sstep: fix 'ptesync' build error 
Building tinyconfig with gcc (Debian 11.2.0-16) and assembler (Debian
2.37.90.20220207) the following build error shows up:

  {standard input}: Assembler messages:
  {standard input}:2088: Error: unrecognized opcode: `ptesync'
  make[3]: *** [/builds/linux/scripts/Makefile.build:287: arch/powerpc/lib/sstep.o] Error 1

Add the 'ifdef CONFIG_PPC64' around the 'ptesync' in function
'emulate_update_regs()' to like it is in 'analyse_instr()'. Since it looks like
it got dropped inadvertently by commit 3cdfcbfd32 ("powerpc: Change
analyse_instr so it doesn't modify *regs").

A key detail is that analyse_instr() will never recognise lwsync or
ptesync on 32-bit (because of the existing ifdef), and as a result
emulate_update_regs() should never be called with an op specifying
either of those on 32-bit. So removing them from emulate_update_regs()
should be a nop in terms of runtime behaviour.

Fixes: 3cdfcbfd32 ("powerpc: Change analyse_instr so it doesn't modify *regs")
Cc: stable@vger.kernel.org # v4.14+
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
[mpe: Add last paragraph of change log mentioning analyse_instr() details]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220211005113.1361436-1-anders.roxell@linaro.org
History 2022-02-15 22:31:35 +11:00
..
boot RTC for 5.17 2022-01-21 13:13:35 +02:00
configs RTC for 5.17 2022-01-21 13:13:35 +02:00
crypto powerpc updates for 5.17 2022-01-14 15:17:26 +01:00
include KVM: PPC: Book3S HV Nested: Fix nested HFSCR being clobbered with multiple vCPUs 2022-01-25 16:39:41 +11:00
kernel powerpc/603: Fix boot failure with DEBUG_PAGEALLOC and KFENCE 2022-02-07 17:18:47 +11:00
kexec powerpc/kernel: Add __init attribute to eligible functions 2021-12-23 22:33:10 +11:00
kvm KVM: PPC: Book3S HV Nested: Fix nested HFSCR being clobbered with multiple vCPUs 2022-01-25 16:39:41 +11:00
lib powerpc/lib/sstep: fix 'ptesync' build error 2022-02-15 22:31:35 +11:00
math-emu powerpc/64s: avoid reloading (H)SRR registers if they are still valid 2021-06-25 00:06:55 +10:00
mm powerpc/fixmap: Fix VM debug warning on unmap 2022-01-24 17:29:05 +11:00
net powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 2022-01-15 12:21:25 +11:00
perf powerpc/perf: Fix power_pmu_disable to call clear_pmi_irq_pending only if PMI is pending 2022-01-24 17:31:15 +11:00
platforms bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
purgatory powerpc/kexec: Don't use .machine ppc64 in trampoline_64.S 2021-04-08 21:17:43 +10:00
sysdev powerpc updates for 5.17 2022-01-14 15:17:26 +01:00
tools powerpc/head_check: Fix shellcheck errors 2021-08-17 22:52:02 +10:00
xmon powerpc/xmon: Dump XIVE information for online-only processors. 2022-01-06 21:47:00 +11:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig Merge branch 'akpm' (patches from Andrew) 2022-01-20 10:41:01 +02:00
Kconfig.debug powerpc/ptdump: Convert powerpc to GENERIC_PTDUMP 2021-08-25 13:35:48 +10:00
Makefile powerpc: check for support for -Wa,-m{power4,any} 2021-12-23 22:35:12 +11:00
Makefile.postlink powerpc: unrel_branch_check.sh: use nm to find symbol value 2020-09-02 11:00:22 +10:00