Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.8 201/255] powerpc/32s: Disable VMAP stack which CONFIG_ADB_PMU | Date | Tue, 1 Sep 2020 17:10:57 +0200 |
| |
From: Christophe Leroy <christophe.leroy@csgroup.eu>
commit 4a133eb351ccc275683ad49305d0b04dde903733 upstream.
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: cd08f109e262 ("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 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/powerpc/platforms/Kconfig.cputype | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -36,7 +36,7 @@ config PPC_BOOK3S_6xx select PPC_HAVE_PMU_SUPPORT select PPC_HAVE_KUEP select PPC_HAVE_KUAP - select HAVE_ARCH_VMAP_STACK + select HAVE_ARCH_VMAP_STACK if !ADB_PMU config PPC_BOOK3S_601 bool "PowerPC 601"
| |