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powerpc/32s: Disable VMAP stack which CONFIG_ADB_PMU

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low_sleep_handler() can't restore the context from virtual
stack because the stack can hardly be accessed with MMU OFF.

For now, disable VMAP stack when CONFIG_ADB_PMU is selected.

Fixes: cd08f109e2 ("powerpc/32s: Enable CONFIG_VMAP_STACK")
Cc: stable@vger.kernel.org # v5.6+
Reported-by: Giuseppe Sacco <giuseppe@sguazz.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/ec96c15bfa1a7415ab604ee1c98cd45779c08be0.1598553015.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-08-27 18:30:27 +00:00 committed by Michael Ellerman
parent 16d83a540c
commit 4a133eb351
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/platforms/Kconfig.cputype
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@ -36,7 +36,7 @@ config PPC_BOOK3S_6xx
select PPC_HAVE_PMU_SUPPORT select PPC_HAVE_PMU_SUPPORT
select PPC_HAVE_KUEP select PPC_HAVE_KUEP
select PPC_HAVE_KUAP select PPC_HAVE_KUAP
select HAVE_ARCH_VMAP_STACK select HAVE_ARCH_VMAP_STACK if !ADB_PMU
config PPC_BOOK3S_601 config PPC_BOOK3S_601
bool "PowerPC 601" bool "PowerPC 601"