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powerpc: Use feature bit for RTC presence rather than timebase presence
authorPaul Mackerras <paulus@ozlabs.org>
Mon, 19 Mar 2018 21:46:11 +0000 (08:46 +1100)
committerMichael Ellerman <mpe@ellerman.id.au>
Fri, 23 Mar 2018 13:36:45 +0000 (00:36 +1100)
All PowerPC CPUs other than the original PPC601 have a timebase
register rather than the "real-time clock" (RTC) register that the
PPC601 (and the original POWER and POWER2 CPUs) had.  Currently
we have a CPU feature bit to indicate the presence of the timebase,
but it makes more sense to use a bit to indicate the unusual
situation rather than the common situation.  This therefore defines
a CPU_FTR_USE_RTC bit in place of the CPU_FTR_USE_TB bit, and
arranges for it to be set on PPC601 systems.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/include/asm/cputable.h patch | blob | history
arch/powerpc/include/asm/time.h patch | blob | history
arch/powerpc/kernel/dt_cpu_ftrs.c patch | blob | history
arch/powerpc/kernel/vdso.c patch | blob | history

diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index a2c5c95..052db18 100644 (file)
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -138,7 +138,7 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTR_ALTIVEC                        ASM_CONST(0x00000008)
 #define CPU_FTR_TAU                    ASM_CONST(0x00000010)
 #define CPU_FTR_CAN_DOZE               ASM_CONST(0x00000020)
-#define CPU_FTR_USE_TB                 ASM_CONST(0x00000040)
+#define CPU_FTR_USE_RTC                        ASM_CONST(0x00000040)
 #define CPU_FTR_L2CSR                  ASM_CONST(0x00000080)
 #define CPU_FTR_601                    ASM_CONST(0x00000100)
 #define CPU_FTR_DBELL                  ASM_CONST(0x00000200)
@@ -285,21 +285,19 @@ static inline void cpu_feature_keys_init(void) { }
 #endif
 
 #define CPU_FTRS_PPC601        (CPU_FTR_COMMON | CPU_FTR_601 | \
-       CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE)
-#define CPU_FTRS_603   (CPU_FTR_COMMON | \
-           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | \
+       CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE | CPU_FTR_USE_RTC)
+#define CPU_FTRS_603   (CPU_FTR_COMMON | CPU_FTR_MAYBE_CAN_DOZE | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE)
-#define CPU_FTRS_604   (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | CPU_FTR_PPC_LE)
+#define CPU_FTRS_604   (CPU_FTR_COMMON | CPU_FTR_PPC_LE)
 #define CPU_FTRS_740_NOTAU     (CPU_FTR_COMMON | \
-           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | CPU_FTR_L2CR | \
+           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_L2CR | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE)
 #define CPU_FTRS_740   (CPU_FTR_COMMON | \
-           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | CPU_FTR_L2CR | \
+           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_L2CR | \
            CPU_FTR_TAU | CPU_FTR_MAYBE_CAN_NAP | \
            CPU_FTR_PPC_LE)
 #define CPU_FTRS_750   (CPU_FTR_COMMON | \
-           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | CPU_FTR_L2CR | \
+           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_L2CR | \
            CPU_FTR_TAU | CPU_FTR_MAYBE_CAN_NAP | \
            CPU_FTR_PPC_LE)
 #define CPU_FTRS_750CL (CPU_FTRS_750)
@@ -308,103 +306,96 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTRS_750FX (CPU_FTRS_750 | CPU_FTR_DUAL_PLL_750FX)
 #define CPU_FTRS_750GX (CPU_FTRS_750FX)
 #define CPU_FTRS_7400_NOTAU    (CPU_FTR_COMMON | \
-           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | CPU_FTR_L2CR | \
+           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_L2CR | \
            CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE)
 #define CPU_FTRS_7400  (CPU_FTR_COMMON | \
-           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | CPU_FTR_L2CR | \
+           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_L2CR | \
            CPU_FTR_TAU | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE)
 #define CPU_FTRS_7450_20       (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
+           CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_L3CR | CPU_FTR_SPEC7450 | \
            CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE | CPU_FTR_NEED_PAIRED_STWCX)
 #define CPU_FTRS_7450_21       (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_L3CR | CPU_FTR_SPEC7450 | \
            CPU_FTR_NAP_DISABLE_L2_PR | CPU_FTR_L3_DISABLE_NAP | \
            CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE | CPU_FTR_NEED_PAIRED_STWCX)
 #define CPU_FTRS_7450_23       (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | CPU_FTR_NEED_PAIRED_STWCX | \
+           CPU_FTR_NEED_PAIRED_STWCX | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_L3CR | CPU_FTR_SPEC7450 | \
            CPU_FTR_NAP_DISABLE_L2_PR | CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE)
 #define CPU_FTRS_7455_1        (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | CPU_FTR_NEED_PAIRED_STWCX | \
+           CPU_FTR_NEED_PAIRED_STWCX | \
            CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | CPU_FTR_L3CR | \
            CPU_FTR_SPEC7450 | CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE)
 #define CPU_FTRS_7455_20       (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | CPU_FTR_NEED_PAIRED_STWCX | \
+           CPU_FTR_NEED_PAIRED_STWCX | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_L3CR | CPU_FTR_SPEC7450 | \
            CPU_FTR_NAP_DISABLE_L2_PR | CPU_FTR_L3_DISABLE_NAP | \
            CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE)
 #define CPU_FTRS_7455  (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_L3CR | CPU_FTR_SPEC7450 | CPU_FTR_NAP_DISABLE_L2_PR | \
            CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE | CPU_FTR_NEED_PAIRED_STWCX)
 #define CPU_FTRS_7447_10       (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_L3CR | CPU_FTR_SPEC7450 | CPU_FTR_NAP_DISABLE_L2_PR | \
            CPU_FTR_NEED_COHERENT | CPU_FTR_NO_BTIC | CPU_FTR_PPC_LE | \
            CPU_FTR_NEED_PAIRED_STWCX)
 #define CPU_FTRS_7447  (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_L3CR | CPU_FTR_SPEC7450 | CPU_FTR_NAP_DISABLE_L2_PR | \
            CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE | CPU_FTR_NEED_PAIRED_STWCX)
 #define CPU_FTRS_7447A (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_SPEC7450 | CPU_FTR_NAP_DISABLE_L2_PR | \
            CPU_FTR_NEED_COHERENT | CPU_FTR_PPC_LE | CPU_FTR_NEED_PAIRED_STWCX)
 #define CPU_FTRS_7448  (CPU_FTR_COMMON | \
-           CPU_FTR_USE_TB | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_L2CR | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_SPEC7450 | CPU_FTR_NAP_DISABLE_L2_PR | \
            CPU_FTR_PPC_LE | CPU_FTR_NEED_PAIRED_STWCX)
-#define CPU_FTRS_82XX  (CPU_FTR_COMMON | \
-           CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB)
+#define CPU_FTRS_82XX  (CPU_FTR_COMMON | CPU_FTR_MAYBE_CAN_DOZE)
 #define CPU_FTRS_G2_LE (CPU_FTR_COMMON | CPU_FTR_MAYBE_CAN_DOZE | \
-           CPU_FTR_USE_TB | CPU_FTR_MAYBE_CAN_NAP)
+           CPU_FTR_MAYBE_CAN_NAP)
 #define CPU_FTRS_E300  (CPU_FTR_MAYBE_CAN_DOZE | \
-           CPU_FTR_USE_TB | CPU_FTR_MAYBE_CAN_NAP | \
+           CPU_FTR_MAYBE_CAN_NAP | \
            CPU_FTR_COMMON)
 #define CPU_FTRS_E300C2        (CPU_FTR_MAYBE_CAN_DOZE | \
-           CPU_FTR_USE_TB | CPU_FTR_MAYBE_CAN_NAP | \
+           CPU_FTR_MAYBE_CAN_NAP | \
            CPU_FTR_COMMON | CPU_FTR_FPU_UNAVAILABLE)
-#define CPU_FTRS_CLASSIC32     (CPU_FTR_COMMON | CPU_FTR_USE_TB)
-#define CPU_FTRS_8XX   (CPU_FTR_USE_TB | CPU_FTR_NOEXECUTE)
-#define CPU_FTRS_40X   (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
-#define CPU_FTRS_44X   (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
-#define CPU_FTRS_440x6 (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE | \
+#define CPU_FTRS_CLASSIC32     (CPU_FTR_COMMON)
+#define CPU_FTRS_8XX   (CPU_FTR_NOEXECUTE)
+#define CPU_FTRS_40X   (CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
+#define CPU_FTRS_44X   (CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
+#define CPU_FTRS_440x6 (CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE | \
            CPU_FTR_INDEXED_DCR)
 #define CPU_FTRS_47X   (CPU_FTRS_440x6)
-#define CPU_FTRS_E200  (CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
+#define CPU_FTRS_E200  (CPU_FTR_SPE_COMP | \
            CPU_FTR_NODSISRALIGN | CPU_FTR_COHERENT_ICACHE | \
            CPU_FTR_UNIFIED_ID_CACHE | CPU_FTR_NOEXECUTE | \
            CPU_FTR_DEBUG_LVL_EXC)
-#define CPU_FTRS_E500  (CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | \
+#define CPU_FTRS_E500  (CPU_FTR_MAYBE_CAN_DOZE | \
            CPU_FTR_SPE_COMP | CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_NODSISRALIGN | \
            CPU_FTR_NOEXECUTE)
-#define CPU_FTRS_E500_2        (CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | \
+#define CPU_FTRS_E500_2        (CPU_FTR_MAYBE_CAN_DOZE | \
            CPU_FTR_SPE_COMP | CPU_FTR_MAYBE_CAN_NAP | \
            CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
-#define CPU_FTRS_E500MC        (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | \
+#define CPU_FTRS_E500MC        (CPU_FTR_NODSISRALIGN | \
            CPU_FTR_L2CSR | CPU_FTR_LWSYNC | CPU_FTR_NOEXECUTE | \
            CPU_FTR_DBELL | CPU_FTR_DEBUG_LVL_EXC | CPU_FTR_EMB_HV)
 /*
  * e5500/e6500 erratum A-006958 is a timebase bug that can use the
  * same workaround as CPU_FTR_CELL_TB_BUG.
  */
-#define CPU_FTRS_E5500 (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | \
+#define CPU_FTRS_E5500 (CPU_FTR_NODSISRALIGN | \
            CPU_FTR_L2CSR | CPU_FTR_LWSYNC | CPU_FTR_NOEXECUTE | \
            CPU_FTR_DBELL | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \
            CPU_FTR_DEBUG_LVL_EXC | CPU_FTR_EMB_HV | CPU_FTR_CELL_TB_BUG)
-#define CPU_FTRS_E6500 (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | \
+#define CPU_FTRS_E6500 (CPU_FTR_NODSISRALIGN | \
            CPU_FTR_L2CSR | CPU_FTR_LWSYNC | CPU_FTR_NOEXECUTE | \
            CPU_FTR_DBELL | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \
            CPU_FTR_DEBUG_LVL_EXC | CPU_FTR_EMB_HV | CPU_FTR_ALTIVEC_COMP | \
@@ -412,21 +403,21 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTRS_GENERIC_32    (CPU_FTR_COMMON | CPU_FTR_NODSISRALIGN)
 
 /* 64-bit CPUs */
-#define CPU_FTRS_POWER4        (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_POWER4        (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
            CPU_FTR_MMCRA | CPU_FTR_CP_USE_DCBTZ | \
            CPU_FTR_STCX_CHECKS_ADDRESS)
-#define CPU_FTRS_PPC970        (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_PPC970        (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_201 | \
            CPU_FTR_ALTIVEC_COMP | CPU_FTR_CAN_NAP | CPU_FTR_MMCRA | \
            CPU_FTR_CP_USE_DCBTZ | CPU_FTR_STCX_CHECKS_ADDRESS | \
            CPU_FTR_HVMODE | CPU_FTR_DABRX)
-#define CPU_FTRS_POWER5        (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_POWER5        (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
            CPU_FTR_MMCRA | CPU_FTR_SMT | \
            CPU_FTR_COHERENT_ICACHE | CPU_FTR_PURR | \
            CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_DABRX)
-#define CPU_FTRS_POWER6 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_POWER6 (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
            CPU_FTR_MMCRA | CPU_FTR_SMT | \
            CPU_FTR_COHERENT_ICACHE | \
@@ -434,7 +425,7 @@ static inline void cpu_feature_keys_init(void) { }
            CPU_FTR_DSCR | CPU_FTR_UNALIGNED_LD_STD | \
            CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_CFAR | \
            CPU_FTR_DABRX)
-#define CPU_FTRS_POWER7 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_POWER7 (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\
            CPU_FTR_MMCRA | CPU_FTR_SMT | \
            CPU_FTR_COHERENT_ICACHE | \
@@ -443,7 +434,7 @@ static inline void cpu_feature_keys_init(void) { }
            CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \
            CPU_FTR_CFAR | CPU_FTR_HVMODE | \
            CPU_FTR_VMX_COPY | CPU_FTR_HAS_PPR | CPU_FTR_DABRX | CPU_FTR_PKEY)
-#define CPU_FTRS_POWER8 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_POWER8 (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\
            CPU_FTR_MMCRA | CPU_FTR_SMT | \
            CPU_FTR_COHERENT_ICACHE | \
@@ -455,7 +446,7 @@ static inline void cpu_feature_keys_init(void) { }
            CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_PKEY)
 #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG)
 #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL)
-#define CPU_FTRS_POWER9 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_POWER9 (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\
            CPU_FTR_MMCRA | CPU_FTR_SMT | \
            CPU_FTR_COHERENT_ICACHE | \
@@ -470,15 +461,15 @@ static inline void cpu_feature_keys_init(void) { }
                             (~CPU_FTR_SAO))
 #define CPU_FTRS_POWER9_DD2_0 CPU_FTRS_POWER9
 #define CPU_FTRS_POWER9_DD2_1 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1)
-#define CPU_FTRS_CELL  (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_CELL  (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
            CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \
            CPU_FTR_PAUSE_ZERO  | CPU_FTR_CELL_TB_BUG | CPU_FTR_CP_USE_DCBTZ | \
            CPU_FTR_UNALIGNED_LD_STD | CPU_FTR_DABRX)
-#define CPU_FTRS_PA6T (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+#define CPU_FTRS_PA6T (CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP | \
            CPU_FTR_PURR | CPU_FTR_REAL_LE | CPU_FTR_DABRX)
-#define CPU_FTRS_COMPATIBLE    (CPU_FTR_USE_TB | CPU_FTR_PPCAS_ARCH_V2)
+#define CPU_FTRS_COMPATIBLE    (CPU_FTR_PPCAS_ARCH_V2)
 
 #ifdef __powerpc64__
 #ifdef CONFIG_PPC_BOOK3E
diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h
index b240666..c9ad438 100644 (file)
--- a/arch/powerpc/include/asm/time.h
+++ b/arch/powerpc/include/asm/time.h
@@ -46,7 +46,7 @@ struct div_result {
 /* Accessor functions for the timebase (RTC on 601) registers. */
 /* If one day CONFIG_POWER is added just define __USE_RTC as 1 */
 #ifdef CONFIG_6xx
-#define __USE_RTC()    (!cpu_has_feature(CPU_FTR_USE_TB))
+#define __USE_RTC()    (cpu_has_feature(CPU_FTR_USE_RTC))
 #else
 #define __USE_RTC()    0
 #endif
diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
index 945e2c2..ee562ff 100644 (file)
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -54,8 +54,7 @@ struct dt_cpu_feature {
 };
 
 #define CPU_FTRS_BASE \
-          (CPU_FTR_USE_TB | \
-           CPU_FTR_LWSYNC | \
+          (CPU_FTR_LWSYNC | \
            CPU_FTR_FPU_UNAVAILABLE |\
            CPU_FTR_NODSISRALIGN |\
            CPU_FTR_NOEXECUTE |\
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 22b01a3..b44ec10 100644 (file)
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -99,26 +99,28 @@ static struct vdso_patch_def vdso_patches[] = {
                CPU_FTR_COHERENT_ICACHE, CPU_FTR_COHERENT_ICACHE,
                "__kernel_sync_dicache", "__kernel_sync_dicache_p5"
        },
+#ifdef CONFIG_PPC32
        {
-               CPU_FTR_USE_TB, 0,
+               CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
                "__kernel_gettimeofday", NULL
        },
        {
-               CPU_FTR_USE_TB, 0,
+               CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
                "__kernel_clock_gettime", NULL
        },
        {
-               CPU_FTR_USE_TB, 0,
+               CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
                "__kernel_clock_getres", NULL
        },
        {
-               CPU_FTR_USE_TB, 0,
+               CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
                "__kernel_get_tbfreq", NULL
        },
        {
-               CPU_FTR_USE_TB, 0,
+               CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
                "__kernel_time", NULL
        },
+#endif
 };
 
 /*
Domain: System / Kernel;