Commit 2cfd716d authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'powerpc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc updates from Michael Ellerman:
 "These were delayed for various reasons, so I let them sit in next a
  bit longer, rather than including them in my first pull request.

  Fixes:
   - Fix early access to cpu_spec relocation from Benjamin Herrenschmidt
   - Fix incorrect event codes in power9-event-list from Madhavan Srinivasan
   - Move register_process_table() out of ppc_md from Michael Ellerman

  Use jump_label use for [cpu|mmu]_has_feature():
   - Add mmu_early_init_devtree() from Michael Ellerman
   - Move disable_radix handling into mmu_early_init_devtree() from Michael Ellerman
   - Do hash device tree scanning earlier from Michael Ellerman
   - Do radix device tree scanning earlier from Michael Ellerman
   - Do feature patching before MMU init from Michael Ellerman
   - Check features don't change after patching from Michael Ellerman
   - Make MMU_FTR_RADIX a MMU family feature from Aneesh Kumar K.V
   - Convert mmu_has_feature() to returning bool from Michael Ellerman
   - Convert cpu_has_feature() to returning bool from Michael Ellerman
   - Define radix_enabled() in one place & use static inline from Michael Ellerman
   - Add early_[cpu|mmu]_has_feature() from Michael Ellerman
   - Convert early cpu/mmu feature check to use the new helpers from Aneesh Kumar K.V
   - jump_label: Make it possible for arches to invoke jump_label_init() earlier from Kevin Hao
   - Call jump_label_init() in apply_feature_fixups() from Aneesh Kumar K.V
   - Remove mfvtb() from Kevin Hao
   - Move cpu_has_feature() to a separate file from Kevin Hao
   - Add kconfig option to use jump labels for cpu/mmu_has_feature() from Michael Ellerman
   - Add option to use jump label for cpu_has_feature() from Kevin Hao
   - Add option to use jump label for mmu_has_feature() from Kevin Hao
   - Catch usage of cpu/mmu_has_feature() before jump label init from Aneesh Kumar K.V
   - Annotate jump label assembly from Michael Ellerman

  TLB flush enhancements from Aneesh Kumar K.V:
   - radix: Implement tlb mmu gather flush efficiently
   - Add helper for finding SLBE LLP encoding
   - Use hugetlb flush functions
   - Drop multiple definition of mm_is_core_local
   - radix: Add tlb flush of THP ptes
   - radix: Rename function and drop unused arg
   - radix/hugetlb: Add helper for finding page size
   - hugetlb: Add flush_hugetlb_tlb_range
   - remove flush_tlb_page_nohash

  Add new ptrace regsets from Anshuman Khandual and Simon Guo:
   - elf: Add powerpc specific core note sections
   - Add the function flush_tmregs_to_thread
   - Enable in transaction NT_PRFPREG ptrace requests
   - Enable in transaction NT_PPC_VMX ptrace requests
   - Enable in transaction NT_PPC_VSX ptrace requests
   - Adapt gpr32_get, gpr32_set functions for transaction
   - Enable support for NT_PPC_CGPR
   - Enable support for NT_PPC_CFPR
   - Enable support for NT_PPC_CVMX
   - Enable support for NT_PPC_CVSX
   - Enable support for TM SPR state
   - Enable NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCR
   - Enable support for NT_PPPC_TAR, NT_PPC_PPR, NT_PPC_DSCR
   - Enable support for EBB registers
   - Enable support for Performance Monitor registers"

* tag 'powerpc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (48 commits)
  powerpc/mm: Move register_process_table() out of ppc_md
  powerpc/perf: Fix incorrect event codes in power9-event-list
  powerpc/32: Fix early access to cpu_spec relocation
  powerpc/ptrace: Enable support for Performance Monitor registers
  powerpc/ptrace: Enable support for EBB registers
  powerpc/ptrace: Enable support for NT_PPPC_TAR, NT_PPC_PPR, NT_PPC_DSCR
  powerpc/ptrace: Enable NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCR
  powerpc/ptrace: Enable support for TM SPR state
  powerpc/ptrace: Enable support for NT_PPC_CVSX
  powerpc/ptrace: Enable support for NT_PPC_CVMX
  powerpc/ptrace: Enable support for NT_PPC_CFPR
  powerpc/ptrace: Enable support for NT_PPC_CGPR
  powerpc/ptrace: Adapt gpr32_get, gpr32_set functions for transaction
  powerpc/ptrace: Enable in transaction NT_PPC_VSX ptrace requests
  powerpc/ptrace: Enable in transaction NT_PPC_VMX ptrace requests
  powerpc/ptrace: Enable in transaction NT_PRFPREG ptrace requests
  powerpc/process: Add the function flush_tmregs_to_thread
  elf: Add powerpc specific core note sections
  powerpc/mm: remove flush_tlb_page_nohash
  powerpc/mm/hugetlb: Add flush_hugetlb_tlb_range
  ...
parents 755b20f4 eea8148c
......@@ -75,6 +75,14 @@ static inline void disable_kernel_spe(void)
static inline void __giveup_spe(struct task_struct *t) { }
#endif
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
extern void flush_tmregs_to_thread(struct task_struct *);
#else
static inline void flush_tmregs_to_thread(struct task_struct *t)
{
}
#endif
static inline void clear_task_ebb(struct task_struct *t)
{
#ifdef CONFIG_PPC_BOOK3S_64
......
......@@ -18,6 +18,7 @@
#include <linux/percpu.h>
#include <asm/processor.h>
#include <asm/cpu_has_feature.h>
/* time.c */
extern unsigned long tb_ticks_per_jiffy;
......@@ -103,7 +104,7 @@ static inline u64 get_vtb(void)
{
#ifdef CONFIG_PPC_BOOK3S_64
if (cpu_has_feature(CPU_FTR_ARCH_207S))
return mfvtb();
return mfspr(SPRN_VTB);
#endif
return 0;
}
......
......@@ -46,5 +46,18 @@ static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
#endif
}
#ifdef CONFIG_SMP
static inline int mm_is_core_local(struct mm_struct *mm)
{
return cpumask_subset(mm_cpumask(mm),
topology_sibling_cpumask(smp_processor_id()));
}
#else
static inline int mm_is_core_local(struct mm_struct *mm)
{
return 1;
}
#endif
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_TLB_H */
......@@ -54,7 +54,6 @@ extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
#define flush_tlb_page(vma,addr) local_flush_tlb_page(vma,addr)
#define __flush_tlb_page(mm,addr,p,i) __local_flush_tlb_page(mm,addr,p,i)
#endif
#define flush_tlb_page_nohash(vma,addr) flush_tlb_page(vma,addr)
#elif defined(CONFIG_PPC_STD_MMU_32)
......
......@@ -23,6 +23,7 @@
#ifdef CONFIG_ALTIVEC
#include <asm/cputable.h>
#include <asm/cpu_has_feature.h>
void xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in);
......
......@@ -91,6 +91,11 @@
#define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
#define ELF_NFPREG 33 /* includes fpscr */
#define ELF_NVMX 34 /* includes all vector registers */
#define ELF_NVSX 32 /* includes all VSX registers */
#define ELF_NTMSPRREG 3 /* include tfhar, tfiar, texasr */
#define ELF_NEBB 3 /* includes ebbrr, ebbhr, bescr */
#define ELF_NPMU 5 /* includes siar, sdar, sier, mmcr2, mmcr0 */
typedef unsigned long elf_greg_t64;
typedef elf_greg_t64 elf_gregset_t64[ELF_NGREG];
......
......@@ -26,6 +26,7 @@
#include <asm/emulated_ops.h>
#include <asm/switch_to.h>
#include <asm/disassemble.h>
#include <asm/cpu_has_feature.h>
struct aligninfo {
unsigned char len;
......
......@@ -15,6 +15,7 @@
#include <linux/threads.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/jump_label.h>
#include <asm/oprofile_impl.h>
#include <asm/cputable.h>
......@@ -2224,3 +2225,39 @@ struct cpu_spec * __init identify_cpu(unsigned long offset, unsigned int pvr)
return NULL;
}
#ifdef CONFIG_JUMP_LABEL_FEATURE_CHECKS
struct static_key_true cpu_feature_keys[NUM_CPU_FTR_KEYS] = {
[0 ... NUM_CPU_FTR_KEYS - 1] = STATIC_KEY_TRUE_INIT
};
EXPORT_SYMBOL_GPL(cpu_feature_keys);
void __init cpu_feature_keys_init(void)
{
int i;
for (i = 0; i < NUM_CPU_FTR_KEYS; i++) {
unsigned long f = 1ul << i;
if (!(cur_cpu_spec->cpu_features & f))
static_branch_disable(&cpu_feature_keys[i]);
}
}
struct static_key_true mmu_feature_keys[NUM_MMU_FTR_KEYS] = {
[0 ... NUM_MMU_FTR_KEYS - 1] = STATIC_KEY_TRUE_INIT
};
EXPORT_SYMBOL_GPL(mmu_feature_keys);
void __init mmu_feature_keys_init(void)
{
int i;
for (i = 0; i < NUM_MMU_FTR_KEYS; i++) {
unsigned long f = 1ul << i;
if (!(cur_cpu_spec->mmu_features & f))
static_branch_disable(&mmu_feature_keys[i]);
}
}
#endif
......@@ -532,7 +532,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300)
#ifdef CONFIG_PPC_STD_MMU_64
BEGIN_MMU_FTR_SECTION
b 2f
END_MMU_FTR_SECTION_IFSET(MMU_FTR_RADIX)
END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX)
BEGIN_FTR_SECTION
clrrdi r6,r8,28 /* get its ESID */
clrrdi r9,r1,28 /* get current sp ESID */
......
......@@ -940,7 +940,7 @@ BEGIN_MMU_FTR_SECTION
b do_hash_page /* Try to handle as hpte fault */
MMU_FTR_SECTION_ELSE
b handle_page_fault
ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX)
ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
.align 7
.globl h_data_storage_common
......@@ -971,7 +971,7 @@ BEGIN_MMU_FTR_SECTION
b do_hash_page /* Try to handle as hpte fault */
MMU_FTR_SECTION_ELSE
b handle_page_fault
ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX)
ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
STD_EXCEPTION_COMMON(0xe20, h_instr_storage, unknown_exception)
......@@ -1392,7 +1392,7 @@ slb_miss_realmode:
#ifdef CONFIG_PPC_STD_MMU_64
BEGIN_MMU_FTR_SECTION
bl slb_allocate_realmode
END_MMU_FTR_SECTION_IFCLR(MMU_FTR_RADIX)
END_MMU_FTR_SECTION_IFCLR(MMU_FTR_TYPE_RADIX)
#endif
/* All done -- return from exception. */
......@@ -1406,7 +1406,7 @@ BEGIN_MMU_FTR_SECTION
beq- 2f
FTR_SECTION_ELSE
b 2f
ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX)
ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
.machine push
.machine "power4"
......
......@@ -572,7 +572,7 @@ common_exit:
BEGIN_MMU_FTR_SECTION
b no_segments
END_MMU_FTR_SECTION_IFSET(MMU_FTR_RADIX)
END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX)
/* Restore SLB from PACA */
ld r8,PACA_SLBSHADOWPTR(r13)
......
......@@ -75,6 +75,7 @@
#endif
#define CREATE_TRACE_POINTS
#include <asm/trace.h>
#include <asm/cpu_has_feature.h>
DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
EXPORT_PER_CPU_SYMBOL(irq_stat);
......
......@@ -184,7 +184,7 @@ void setup_paca(struct paca_struct *new_paca)
* if we do a GET_PACA() before the feature fixups have been
* applied
*/
if (cpu_has_feature(CPU_FTR_HVMODE))
if (early_cpu_has_feature(CPU_FTR_HVMODE))
mtspr(SPRN_SPRG_HPACA, local_paca);
#endif
mtspr(SPRN_SPRG_PACA, local_paca);
......
......@@ -58,6 +58,7 @@
#include <asm/code-patching.h>
#include <asm/exec.h>
#include <asm/livepatch.h>
#include <asm/cpu_has_feature.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
......@@ -1073,6 +1074,26 @@ static inline void restore_sprs(struct thread_struct *old_thread,
#endif
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
void flush_tmregs_to_thread(struct task_struct *tsk)
{
/*
* Process self tracing is not yet supported through
* ptrace interface. Ptrace generic code should have
* prevented this from happening in the first place.
* Warn once here with the message, if some how it
* is attempted.
*/
WARN_ONCE(tsk == current,
"Not expecting ptrace on self: TM regs may be incorrect\n");
/*
* If task is not current, it should have been flushed
* already to it's thread_struct during __switch_to().
*/
}
#endif
struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *new)
{
......
......@@ -170,7 +170,7 @@ static struct ibm_pa_feature {
*/
{CPU_FTR_TM_COMP, 0, 0,
PPC_FEATURE2_HTM_COMP|PPC_FEATURE2_HTM_NOSC_COMP, 22, 0, 0},
{0, MMU_FTR_RADIX, 0, 0, 40, 0, 0},
{0, MMU_FTR_TYPE_RADIX, 0, 0, 40, 0, 0},
};
static void __init scan_features(unsigned long node, const unsigned char *ftrs,
......@@ -647,14 +647,6 @@ static void __init early_reserve_mem(void)
#endif
}
static bool disable_radix;
static int __init parse_disable_radix(char *p)
{
disable_radix = true;
return 0;
}
early_param("disable_radix", parse_disable_radix);
void __init early_init_devtree(void *params)
{
phys_addr_t limit;
......@@ -744,11 +736,8 @@ void __init early_init_devtree(void *params)
*/
spinning_secondaries = boot_cpu_count - 1;
#endif
/*
* now fixup radix MMU mode based on kernel command line
*/
if (disable_radix)
cur_cpu_spec->mmu_features &= ~MMU_FTR_RADIX;
mmu_early_init_devtree();
#ifdef CONFIG_PPC_POWERNV
/* Scan and build the list of machine check recoverable ranges */
......
This diff is collapsed.
......@@ -66,6 +66,7 @@
#include <asm/hugetlb.h>
#include <asm/livepatch.h>
#include <asm/mmu_context.h>
#include <asm/cpu_has_feature.h>
#include "setup.h"
......
......@@ -37,6 +37,7 @@
#include <asm/serial.h>
#include <asm/udbg.h>
#include <asm/code-patching.h>
#include <asm/cpu_has_feature.h>
#define DBG(fmt...)
......
......@@ -227,8 +227,8 @@ static void __init configure_exceptions(void)
opal_configure_cores();
/* Enable AIL if supported, and we are in hypervisor mode */
if (cpu_has_feature(CPU_FTR_HVMODE) &&
cpu_has_feature(CPU_FTR_ARCH_207S)) {
if (early_cpu_has_feature(CPU_FTR_HVMODE) &&
early_cpu_has_feature(CPU_FTR_ARCH_207S)) {
unsigned long lpcr = mfspr(SPRN_LPCR);
mtspr(SPRN_LPCR, lpcr | LPCR_AIL_3);
}
......@@ -298,12 +298,12 @@ void __init early_setup(unsigned long dt_ptr)
*/
configure_exceptions();
/* Initialize the hash table or TLB handling */
early_init_mmu();
/* Apply all the dynamic patching */
apply_feature_fixups();
/* Initialize the hash table or TLB handling */
early_init_mmu();
/*
* At this point, we can let interrupts switch to virtual mode
* (the MMU has been setup), so adjust the MSR in the PACA to
......
......@@ -55,6 +55,7 @@
#include <asm/debug.h>
#include <asm/kexec.h>
#include <asm/asm-prototypes.h>
#include <asm/cpu_has_feature.h>
#ifdef DEBUG
#include <asm/udbg.h>
......
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