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-rw-r--r--arch/powerpc/kernel/asm-offsets.c13
-rw-r--r--arch/powerpc/kernel/cpu_setup_power.S4
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S4
-rw-r--r--arch/powerpc/kernel/iommu.c25
-rw-r--r--arch/powerpc/kernel/process.c19
-rw-r--r--arch/powerpc/kernel/tm.S20
-rw-r--r--arch/powerpc/kernel/traps.c34
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S2
8 files changed, 56 insertions, 65 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 89cf15566c4e..d68b9ef38328 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -387,12 +387,12 @@ int main(void)
OFFSET(CFG_SYSCALL_MAP64, vdso_data, syscall_map_64);
OFFSET(TVAL64_TV_SEC, timeval, tv_sec);
OFFSET(TVAL64_TV_USEC, timeval, tv_usec);
- OFFSET(TVAL32_TV_SEC, compat_timeval, tv_sec);
- OFFSET(TVAL32_TV_USEC, compat_timeval, tv_usec);
+ OFFSET(TVAL32_TV_SEC, old_timeval32, tv_sec);
+ OFFSET(TVAL32_TV_USEC, old_timeval32, tv_usec);
OFFSET(TSPC64_TV_SEC, timespec, tv_sec);
OFFSET(TSPC64_TV_NSEC, timespec, tv_nsec);
- OFFSET(TSPC32_TV_SEC, compat_timespec, tv_sec);
- OFFSET(TSPC32_TV_NSEC, compat_timespec, tv_nsec);
+ OFFSET(TSPC32_TV_SEC, old_timespec32, tv_sec);
+ OFFSET(TSPC32_TV_NSEC, old_timespec32, tv_nsec);
#else
OFFSET(TVAL32_TV_SEC, timeval, tv_sec);
OFFSET(TVAL32_TV_USEC, timeval, tv_usec);
@@ -438,7 +438,7 @@ int main(void)
#ifdef CONFIG_PPC_BOOK3S
OFFSET(VCPU_TAR, kvm_vcpu, arch.tar);
#endif
- OFFSET(VCPU_CR, kvm_vcpu, arch.cr);
+ OFFSET(VCPU_CR, kvm_vcpu, arch.regs.ccr);
OFFSET(VCPU_PC, kvm_vcpu, arch.regs.nip);
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
OFFSET(VCPU_MSR, kvm_vcpu, arch.shregs.msr);
@@ -503,6 +503,7 @@ int main(void)
OFFSET(VCPU_VPA, kvm_vcpu, arch.vpa.pinned_addr);
OFFSET(VCPU_VPA_DIRTY, kvm_vcpu, arch.vpa.dirty);
OFFSET(VCPU_HEIR, kvm_vcpu, arch.emul_inst);
+ OFFSET(VCPU_NESTED, kvm_vcpu, arch.nested);
OFFSET(VCPU_CPU, kvm_vcpu, cpu);
OFFSET(VCPU_THREAD_CPU, kvm_vcpu, arch.thread_cpu);
#endif
@@ -695,7 +696,7 @@ int main(void)
#endif /* CONFIG_PPC_BOOK3S_64 */
#else /* CONFIG_PPC_BOOK3S */
- OFFSET(VCPU_CR, kvm_vcpu, arch.cr);
+ OFFSET(VCPU_CR, kvm_vcpu, arch.regs.ccr);
OFFSET(VCPU_XER, kvm_vcpu, arch.regs.xer);
OFFSET(VCPU_LR, kvm_vcpu, arch.regs.link);
OFFSET(VCPU_CTR, kvm_vcpu, arch.regs.ctr);
diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index 458b928dbd84..c317080db771 100644
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -147,8 +147,8 @@ __init_hvmode_206:
rldicl. r0,r3,4,63
bnelr
ld r5,CPU_SPEC_FEATURES(r4)
- LOAD_REG_IMMEDIATE(r6,CPU_FTR_HVMODE)
- xor r5,r5,r6
+ LOAD_REG_IMMEDIATE(r6,CPU_FTR_HVMODE | CPU_FTR_P9_TM_HV_ASSIST)
+ andc r5,r5,r6
std r5,CPU_SPEC_FEATURES(r4)
blr
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index ea04dfb8c092..2d8fc8c9da7a 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1314,9 +1314,7 @@ EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x100)
#ifdef CONFIG_PPC_DENORMALISATION
mfspr r10,SPRN_HSRR1
- mfspr r11,SPRN_HSRR0 /* save HSRR0 */
andis. r10,r10,(HSRR1_DENORM)@h /* denorm? */
- addi r11,r11,-4 /* HSRR0 is next instruction */
bne+ denorm_assist
#endif
@@ -1382,6 +1380,8 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
*/
XVCPSGNDP32(32)
denorm_done:
+ mfspr r11,SPRN_HSRR0
+ subi r11,r11,4
mtspr SPRN_HSRR0,r11
mtcrf 0x80,r9
ld r9,PACA_EXGEN+EX_R9(r13)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index af7a20dc6e09..19b4c628f3be 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -1013,31 +1013,6 @@ long iommu_tce_xchg(struct iommu_table *tbl, unsigned long entry,
}
EXPORT_SYMBOL_GPL(iommu_tce_xchg);
-#ifdef CONFIG_PPC_BOOK3S_64
-long iommu_tce_xchg_rm(struct iommu_table *tbl, unsigned long entry,
- unsigned long *hpa, enum dma_data_direction *direction)
-{
- long ret;
-
- ret = tbl->it_ops->exchange_rm(tbl, entry, hpa, direction);
-
- if (!ret && ((*direction == DMA_FROM_DEVICE) ||
- (*direction == DMA_BIDIRECTIONAL))) {
- struct page *pg = realmode_pfn_to_page(*hpa >> PAGE_SHIFT);
-
- if (likely(pg)) {
- SetPageDirty(pg);
- } else {
- tbl->it_ops->exchange_rm(tbl, entry, hpa, direction);
- ret = -EFAULT;
- }
- }
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(iommu_tce_xchg_rm);
-#endif
-
int iommu_take_ownership(struct iommu_table *tbl)
{
unsigned long flags, i, sz = (tbl->it_size + 7) >> 3;
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 913c5725cdb2..5d983d8bac27 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -620,8 +620,6 @@ void do_send_trap(struct pt_regs *regs, unsigned long address,
void do_break (struct pt_regs *regs, unsigned long address,
unsigned long error_code)
{
- siginfo_t info;
-
current->thread.trap_nr = TRAP_HWBKPT;
if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, error_code,
11, SIGSEGV) == NOTIFY_STOP)
@@ -634,12 +632,7 @@ void do_break (struct pt_regs *regs, unsigned long address,
hw_breakpoint_disable();
/* Deliver the signal to userspace */
- clear_siginfo(&info);
- info.si_signo = SIGTRAP;
- info.si_errno = 0;
- info.si_code = TRAP_HWBKPT;
- info.si_addr = (void __user *)address;
- force_sig_info(SIGTRAP, &info, current);
+ force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)address, current);
}
#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
@@ -1306,6 +1299,16 @@ void show_user_instructions(struct pt_regs *regs)
pc = regs->nip - (instructions_to_print * 3 / 4 * sizeof(int));
+ /*
+ * Make sure the NIP points at userspace, not kernel text/data or
+ * elsewhere.
+ */
+ if (!__access_ok(pc, instructions_to_print * sizeof(int), USER_DS)) {
+ pr_info("%s[%d]: Bad NIP, not dumping instructions.\n",
+ current->comm, current->pid);
+ return;
+ }
+
pr_info("%s[%d]: code: ", current->comm, current->pid);
for (i = 0; i < instructions_to_print; i++) {
diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
index 6bffbc5affe7..7716374786bd 100644
--- a/arch/powerpc/kernel/tm.S
+++ b/arch/powerpc/kernel/tm.S
@@ -176,13 +176,27 @@ _GLOBAL(tm_reclaim)
std r1, PACATMSCRATCH(r13)
ld r1, PACAR1(r13)
- /* Store the PPR in r11 and reset to decent value */
std r11, GPR11(r1) /* Temporary stash */
+ /*
+ * Move the saved user r1 to the kernel stack in case PACATMSCRATCH is
+ * clobbered by an exception once we turn on MSR_RI below.
+ */
+ ld r11, PACATMSCRATCH(r13)
+ std r11, GPR1(r1)
+
+ /*
+ * Store r13 away so we can free up the scratch SPR for the SLB fault
+ * handler (needed once we start accessing the thread_struct).
+ */
+ GET_SCRATCH0(r11)
+ std r11, GPR13(r1)
+
/* Reset MSR RI so we can take SLB faults again */
li r11, MSR_RI
mtmsrd r11, 1
+ /* Store the PPR in r11 and reset to decent value */
mfspr r11, SPRN_PPR
HMT_MEDIUM
@@ -207,11 +221,11 @@ _GLOBAL(tm_reclaim)
SAVE_GPR(8, r7) /* user r8 */
SAVE_GPR(9, r7) /* user r9 */
SAVE_GPR(10, r7) /* user r10 */
- ld r3, PACATMSCRATCH(r13) /* user r1 */
+ ld r3, GPR1(r1) /* user r1 */
ld r4, GPR7(r1) /* user r7 */
ld r5, GPR11(r1) /* user r11 */
ld r6, GPR12(r1) /* user r12 */
- GET_SCRATCH0(8) /* user r13 */
+ ld r8, GPR13(r1) /* user r13 */
std r3, GPR1(r7)
std r4, GPR7(r7)
std r5, GPR11(r7)
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index c85adb858271..ab1bd06d7c44 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -307,12 +307,9 @@ void die(const char *str, struct pt_regs *regs, long err)
}
NOKPROBE_SYMBOL(die);
-void user_single_step_siginfo(struct task_struct *tsk,
- struct pt_regs *regs, siginfo_t *info)
+void user_single_step_report(struct pt_regs *regs)
{
- info->si_signo = SIGTRAP;
- info->si_code = TRAP_TRACE;
- info->si_addr = (void __user *)regs->nip;
+ force_sig_fault(SIGTRAP, TRAP_TRACE, (void __user *)regs->nip, current);
}
static void show_signal_msg(int signr, struct pt_regs *regs, int code,
@@ -341,14 +338,12 @@ static void show_signal_msg(int signr, struct pt_regs *regs, int code,
show_user_instructions(regs);
}
-void _exception_pkey(int signr, struct pt_regs *regs, int code,
- unsigned long addr, int key)
+static bool exception_common(int signr, struct pt_regs *regs, int code,
+ unsigned long addr)
{
- siginfo_t info;
-
if (!user_mode(regs)) {
die("Exception in kernel mode", regs, signr);
- return;
+ return false;
}
show_signal_msg(signr, regs, code, addr);
@@ -364,18 +359,23 @@ void _exception_pkey(int signr, struct pt_regs *regs, int code,
*/
thread_pkey_regs_save(&current->thread);
- clear_siginfo(&info);
- info.si_signo = signr;
- info.si_code = code;
- info.si_addr = (void __user *) addr;
- info.si_pkey = key;
+ return true;
+}
+
+void _exception_pkey(struct pt_regs *regs, unsigned long addr, int key)
+{
+ if (!exception_common(SIGSEGV, regs, SEGV_PKUERR, addr))
+ return;
- force_sig_info(signr, &info, current);
+ force_sig_pkuerr((void __user *) addr, key);
}
void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
{
- _exception_pkey(signr, regs, code, addr, 0);
+ if (!exception_common(signr, regs, code, addr))
+ return;
+
+ force_sig_fault(signr, code, (void __user *)addr, current);
}
void system_reset_exception(struct pt_regs *regs)
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 07ae018e550e..105a976323aa 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -212,8 +212,6 @@ SECTIONS
CON_INITCALL
}
- SECURITY_INIT
-
. = ALIGN(8);
__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
__start___ftr_fixup = .;
generated by cgit (git 2.34.1) at 2024-06-23 01:32:53 +0000