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db972a3787
linux/arch/powerpc
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Christophe Leroy db972a3787 powerpc/powermac: Fix low_sleep_handler with CONFIG_VMAP_STACK 
low_sleep_handler() can't restore the context from standard
stack because the stack can hardly be accessed with MMU OFF.

Store everything in a global storage area instead of storing
a pointer to the stack in that global storage area.

To avoid a complete churn of the function, still use r1 as
the pointer to the storage area during restore.

Fixes: cd08f109e2 ("powerpc/32s: Enable CONFIG_VMAP_STACK")
Reported-by: Giuseppe Sacco <giuseppe@sguazz.it>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Giuseppe Sacco <giuseppe@sguazz.it>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/e3e0d8042a3ba75cb4a9546c19c408b5b5b28994.1607404931.git.christophe.leroy@csgroup.eu
2020-12-08 21:41:03 +11:00
..
boot powerpc/boot: Make use of REL16 relocs in powerpc/boot/util.S 2020-12-04 01:00:44 +11:00
configs powerpc: add security.config, enforcing lockdown=integrity 2020-12-04 01:01:34 +11:00
crypto crypto: powerpc/crc-vpmsum_test - Fix sparse endianness warning 2020-09-04 17:57:15 +10:00
include powerpc/rtas: remove unused rtas_suspend_me_data 2020-12-08 21:41:02 +11:00
kernel powerpc/rtas: remove unused rtas_suspend_last_cpu() 2020-12-08 21:41:01 +11:00
kexec arch, drivers: replace for_each_membock() with for_each_mem_range() 2020-10-13 18:38:35 -07:00
kvm powerpc: Fix update form addressing in inline assembly 2020-12-04 22:13:19 +11:00
lib powerpc/feature-fixups: use a semicolon rather than a comma 2020-12-04 01:01:20 +11:00
math-emu
mm powerpc/book3s64/kuap: Improve error reporting with KUAP 2020-12-08 21:40:54 +11:00
net bpf, powerpc: Fix misuse of fallthrough in bpf_jit_comp() 2020-09-29 16:39:11 +02:00
oprofile powerpc/oprofile: fix spelling mistake "contex" -> "context" 2020-08-25 01:31:33 +10:00
perf powerpc/perf: MMCR0 control for PMU registers under PMCC=00 2020-12-04 01:01:29 +11:00
platforms powerpc/powermac: Fix low_sleep_handler with CONFIG_VMAP_STACK 2020-12-08 21:41:03 +11:00
purgatory powerpc/kexec_file: Enable early kernel OPAL calls 2020-07-29 23:47:55 +10:00
sysdev powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() 2020-11-19 14:50:14 +11:00
tools powerpc/tools: Remove 90 line limit in checkpatch script 2020-09-08 22:57:11 +10:00
xmon powerpc/xmon: Change printk() to pr_cont() 2020-12-04 21:56:30 +11:00
Kbuild
Kconfig powerpc: fix spelling mistake in Kconfig "seleted" -> "selected" 2020-12-08 21:41:03 +11:00
Kconfig.debug powerpc: Remove Xilinx PPC405/PPC440 support 2020-05-28 23:24:34 +10:00
Makefile powerpc/vdso: Retrieve sigtramp offsets at buildtime 2020-12-04 01:01:17 +11:00
Makefile.postlink powerpc: unrel_branch_check.sh: use nm to find symbol value 2020-09-02 11:00:22 +10:00