diff options
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 29 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/feature-fixups.h | 19 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/security_features.h | 11 |
4 files changed, 60 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 471b2274fbeb..c40b4380951c 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -74,6 +74,27 @@ */ #define EX_R3 EX_DAR +#define STF_ENTRY_BARRIER_SLOT \ + STF_ENTRY_BARRIER_FIXUP_SECTION; \ + nop; \ + nop; \ + nop + +#define STF_EXIT_BARRIER_SLOT \ + STF_EXIT_BARRIER_FIXUP_SECTION; \ + nop; \ + nop; \ + nop; \ + nop; \ + nop; \ + nop + +/* + * r10 must be free to use, r13 must be paca + */ +#define INTERRUPT_TO_KERNEL \ + STF_ENTRY_BARRIER_SLOT + /* * Macros for annotating the expected destination of (h)rfid * @@ -90,16 +111,19 @@ rfid #define RFI_TO_USER \ + STF_EXIT_BARRIER_SLOT; \ RFI_FLUSH_SLOT; \ rfid; \ b rfi_flush_fallback #define RFI_TO_USER_OR_KERNEL \ + STF_EXIT_BARRIER_SLOT; \ RFI_FLUSH_SLOT; \ rfid; \ b rfi_flush_fallback #define RFI_TO_GUEST \ + STF_EXIT_BARRIER_SLOT; \ RFI_FLUSH_SLOT; \ rfid; \ b rfi_flush_fallback @@ -108,21 +132,25 @@ hrfid #define HRFI_TO_USER \ + STF_EXIT_BARRIER_SLOT; \ RFI_FLUSH_SLOT; \ hrfid; \ b hrfi_flush_fallback #define HRFI_TO_USER_OR_KERNEL \ + STF_EXIT_BARRIER_SLOT; \ RFI_FLUSH_SLOT; \ hrfid; \ b hrfi_flush_fallback #define HRFI_TO_GUEST \ + STF_EXIT_BARRIER_SLOT; \ RFI_FLUSH_SLOT; \ hrfid; \ b hrfi_flush_fallback #define HRFI_TO_UNKNOWN \ + STF_EXIT_BARRIER_SLOT; \ RFI_FLUSH_SLOT; \ hrfid; \ b hrfi_flush_fallback @@ -254,6 +282,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) #define __EXCEPTION_PROLOG_1_PRE(area) \ OPT_SAVE_REG_TO_PACA(area+EX_PPR, r9, CPU_FTR_HAS_PPR); \ OPT_SAVE_REG_TO_PACA(area+EX_CFAR, r10, CPU_FTR_CFAR); \ + INTERRUPT_TO_KERNEL; \ SAVE_CTR(r10, area); \ mfcr r9; diff --git a/arch/powerpc/include/asm/feature-fixups.h b/arch/powerpc/include/asm/feature-fixups.h index 1e82eb3caabd..a9b64df34e2a 100644 --- a/arch/powerpc/include/asm/feature-fixups.h +++ b/arch/powerpc/include/asm/feature-fixups.h @@ -187,6 +187,22 @@ label##3: \ FTR_ENTRY_OFFSET label##1b-label##3b; \ .popsection; +#define STF_ENTRY_BARRIER_FIXUP_SECTION \ +953: \ + .pushsection __stf_entry_barrier_fixup,"a"; \ + .align 2; \ +954: \ + FTR_ENTRY_OFFSET 953b-954b; \ + .popsection; + +#define STF_EXIT_BARRIER_FIXUP_SECTION \ +955: \ + .pushsection __stf_exit_barrier_fixup,"a"; \ + .align 2; \ +956: \ + FTR_ENTRY_OFFSET 955b-956b; \ + .popsection; + #define RFI_FLUSH_FIXUP_SECTION \ 951: \ .pushsection __rfi_flush_fixup,"a"; \ @@ -199,6 +215,9 @@ label##3: \ #ifndef __ASSEMBLY__ #include <linux/types.h> +extern long stf_barrier_fallback; +extern long __start___stf_entry_barrier_fixup, __stop___stf_entry_barrier_fixup; +extern long __start___stf_exit_barrier_fixup, __stop___stf_exit_barrier_fixup; extern long __start___rfi_flush_fixup, __stop___rfi_flush_fixup; void apply_feature_fixups(void); diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 4c02a7378d06..e7377b73cfec 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -96,6 +96,7 @@ struct kvmppc_vcore { struct kvm_vcpu *runner; struct kvm *kvm; u64 tb_offset; /* guest timebase - host timebase */ + u64 tb_offset_applied; /* timebase offset currently in force */ ulong lpcr; u32 arch_compat; ulong pcr; diff --git a/arch/powerpc/include/asm/security_features.h b/arch/powerpc/include/asm/security_features.h index fa4d2e1cf772..44989b22383c 100644 --- a/arch/powerpc/include/asm/security_features.h +++ b/arch/powerpc/include/asm/security_features.h @@ -12,6 +12,17 @@ extern unsigned long powerpc_security_features; extern bool rfi_flush; +/* These are bit flags */ +enum stf_barrier_type { + STF_BARRIER_NONE = 0x1, + STF_BARRIER_FALLBACK = 0x2, + STF_BARRIER_EIEIO = 0x4, + STF_BARRIER_SYNC_ORI = 0x8, +}; + +void setup_stf_barrier(void); +void do_stf_barrier_fixups(enum stf_barrier_type types); + static inline void security_ftr_set(unsigned long feature) { powerpc_security_features |= feature; |