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powerpc/64s: rename pnv|pseries_setup_rfi_flush to _setup_security_mitigations 

pseries|pnv_setup_rfi_flush already does the count cache flush setup, and
we just added entry and uaccess flushes. So the name is not very accurate
any more. In both platforms we then also immediately setup the STF flush.

Rename them to _setup_security_mitigations and fold the STF flush in.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
zero-sugar-mainline-defconfig
Daniel Axtens 2020-11-17 16:59:16 +11:00 committed by Michael Ellerman
parent 0d239f3b03
commit da631f7fd6
4 changed files with 11 additions and 9 deletions
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7
arch/powerpc/platforms/powernv/setup.c
View File

@ -98,7 +98,7 @@ static void init_fw_feat_flags(struct device_node *np)
security_ftr_clear(SEC_FTR_BNDS_CHK_SPEC_BAR);
}
static void pnv_setup_rfi_flush(void)
static void pnv_setup_security_mitigations(void)
{
struct device_node *np, *fw_features;
enum l1d_flush_type type;
@ -145,6 +145,8 @@ static void pnv_setup_rfi_flush(void)
enable = security_ftr_enabled(SEC_FTR_FAVOUR_SECURITY) &&
security_ftr_enabled(SEC_FTR_L1D_FLUSH_UACCESS);
setup_uaccess_flush(enable);
setup_stf_barrier();
}
static void __init pnv_check_guarded_cores(void)
@ -173,8 +175,7 @@ static void __init pnv_setup_arch(void)
{
set_arch_panic_timeout(10, ARCH_PANIC_TIMEOUT);
pnv_setup_rfi_flush();
setup_stf_barrier();
pnv_setup_security_mitigations();
/* Initialize SMP */
pnv_smp_init();

4
arch/powerpc/platforms/pseries/mobility.c
View File

@ -349,8 +349,8 @@ void post_mobility_fixup(void)
cpus_read_unlock();
/* Possibly switch to a new RFI flush type */
pseries_setup_rfi_flush();
/* Possibly switch to a new L1 flush type */
pseries_setup_security_mitigations();
/* Reinitialise system information for hv-24x7 */
read_24x7_sys_info();

2
arch/powerpc/platforms/pseries/pseries.h
View File

@ -111,7 +111,7 @@ static inline unsigned long cmo_get_page_size(void)
int dlpar_workqueue_init(void);
void pseries_setup_rfi_flush(void);
void pseries_setup_security_mitigations(void);
void pseries_lpar_read_hblkrm_characteristics(void);
#endif /* _PSERIES_PSERIES_H */

7
arch/powerpc/platforms/pseries/setup.c
View File

@ -542,7 +542,7 @@ static void init_cpu_char_feature_flags(struct h_cpu_char_result *result)
security_ftr_clear(SEC_FTR_BNDS_CHK_SPEC_BAR);
}
void pseries_setup_rfi_flush(void)
void pseries_setup_security_mitigations(void)
{
struct h_cpu_char_result result;
enum l1d_flush_type types;
@ -587,6 +587,8 @@ void pseries_setup_rfi_flush(void)
enable = security_ftr_enabled(SEC_FTR_FAVOUR_SECURITY) &&
security_ftr_enabled(SEC_FTR_L1D_FLUSH_UACCESS);
setup_uaccess_flush(enable);
setup_stf_barrier();
}
#ifdef CONFIG_PCI_IOV
@ -776,8 +778,7 @@ static void __init pSeries_setup_arch(void)
fwnmi_init();
pseries_setup_rfi_flush();
setup_stf_barrier();
pseries_setup_security_mitigations();
pseries_lpar_read_hblkrm_characteristics();
/* By default, only probe PCI (can be overridden by rtas_pci) */