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

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commit af375eefbf 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: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Michael Ellerman
2019-04-11 21:46:09 +10:00
committed by Chris
parent 8e00833d69
commit 1a4f703389
4 changed files with 6 additions and 2 deletions
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4
arch/powerpc/include/asm/setup.h
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@@ -51,7 +51,11 @@ 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-common.c
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@@ -918,6 +918,8 @@ 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

@@ -525,7 +525,6 @@ 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)