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powerpc/64: Call setup_barrier_nospec() from setup_arch()

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commit af375eefbfb27cbb5b831984e66d724a40d26b5c upstream.

Currently we require platform code to call setup_barrier_nospec(). But
if we add an empty definition for the !CONFIG_PPC_BARRIER_NOSPEC case
then we can call it in setup_arch().

Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Ellerman 2019-04-22 00:20:21 +10:00 committed by Greg Kroah-Hartman
parent e7b3fb43b9
commit 04a682df27
5 changed files with 8 additions and 2 deletions
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4
arch/powerpc/include/asm/setup.h
View File

@ -38,7 +38,11 @@ enum l1d_flush_type {
void setup_rfi_flush(enum l1d_flush_type, bool enable);
void do_rfi_flush_fixups(enum l1d_flush_type types);
#ifdef CONFIG_PPC_BARRIER_NOSPEC
void setup_barrier_nospec(void);
#else
static inline void setup_barrier_nospec(void) { };
#endif
void do_barrier_nospec_fixups(bool enable);
extern bool barrier_nospec_enabled;

2
arch/powerpc/kernel/setup_32.c
View File

@ -322,6 +322,8 @@ void __init setup_arch(char **cmdline_p)
ppc_md.setup_arch();
if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
setup_barrier_nospec();
paging_init();
/* Initialize the MMU context management stuff */

2
arch/powerpc/kernel/setup_64.c
View File

@ -736,6 +736,8 @@ void __init setup_arch(char **cmdline_p)
if (ppc_md.setup_arch)
ppc_md.setup_arch();
setup_barrier_nospec();
paging_init();
/* Initialize the MMU context management stuff */

1
arch/powerpc/platforms/powernv/setup.c
View File

@ -123,7 +123,6 @@ static void pnv_setup_rfi_flush(void)
security_ftr_enabled(SEC_FTR_L1D_FLUSH_HV));
setup_rfi_flush(type, enable);
setup_barrier_nospec();
}
static void __init pnv_setup_arch(void)

1
arch/powerpc/platforms/pseries/setup.c
View File

@ -574,7 +574,6 @@ void pseries_setup_rfi_flush(void)
security_ftr_enabled(SEC_FTR_L1D_FLUSH_PR);
setup_rfi_flush(types, enable);
setup_barrier_nospec();
}
static void __init pSeries_setup_arch(void)