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authorPeter Zijlstra <peterz@infradead.org>2026-02-03 12:04:13 +0100
committerPeter Zijlstra <peterz@infradead.org>2026-02-03 12:04:13 +0100
commit3e4067169c573fba9dd8f77480f3a6e9c723b507 (patch)
treebb332f90943149696e655f6745c5e4c934b8a9fb /arch/powerpc/kernel
parent5c4378b7b0e1f45cf38e77db9305ee2c7bf88002 (diff)
parent18f7fcd5e69a04df57b563360b88be72471d6b62 (diff)
Merge branch 'v6.19-rc8'
Update to avoid conflicts with /urgent patches. Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/btext.c3
-rw-r--r--arch/powerpc/kernel/entry_32.S15
-rw-r--r--arch/powerpc/kernel/interrupt.c5
-rw-r--r--arch/powerpc/kernel/watchdog.c15
4 files changed, 16 insertions, 22 deletions
diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index 7f63f1cdc6c3..ca00c4824e31 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -20,6 +20,7 @@
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/udbg.h>
+#include <asm/setup.h>
#define NO_SCROLL
@@ -463,7 +464,7 @@ static noinline void draw_byte(unsigned char c, long locX, long locY)
{
unsigned char *base = calc_base(locX << 3, locY << 4);
unsigned int font_index = c * 16;
- const unsigned char *font = font_sun_8x16.data + font_index;
+ const unsigned char *font = PTRRELOC(font_sun_8x16.data) + font_index;
int rb = dispDeviceRowBytes;
rmci_maybe_on();
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 16f8ee6cb2cd..d8426251b1cd 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -101,17 +101,6 @@ SYM_FUNC_END(__kuep_unlock)
.endm
#endif
-.macro clr_ri trash
-#ifndef CONFIG_BOOKE
-#ifdef CONFIG_PPC_8xx
- mtspr SPRN_NRI, \trash
-#else
- li \trash, MSR_KERNEL & ~MSR_RI
- mtmsr \trash
-#endif
-#endif
-.endm
-
.globl transfer_to_syscall
transfer_to_syscall:
stw r3, ORIG_GPR3(r1)
@@ -160,7 +149,6 @@ ret_from_syscall:
cmpwi r3,0
REST_GPR(3, r1)
syscall_exit_finish:
- clr_ri r4
mtspr SPRN_SRR0,r7
mtspr SPRN_SRR1,r8
@@ -237,7 +225,6 @@ fast_exception_return:
/* Clear the exception marker on the stack to avoid confusing stacktrace */
li r10, 0
stw r10, 8(r11)
- clr_ri r10
mtspr SPRN_SRR1,r9
mtspr SPRN_SRR0,r12
REST_GPR(9, r11)
@@ -270,7 +257,6 @@ interrupt_return:
.Lfast_user_interrupt_return:
lwz r11,_NIP(r1)
lwz r12,_MSR(r1)
- clr_ri r4
mtspr SPRN_SRR0,r11
mtspr SPRN_SRR1,r12
@@ -313,7 +299,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
cmpwi cr1,r3,0
lwz r11,_NIP(r1)
lwz r12,_MSR(r1)
- clr_ri r4
mtspr SPRN_SRR0,r11
mtspr SPRN_SRR1,r12
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c
index aea6f7e8e9c6..e63bfde13e03 100644
--- a/arch/powerpc/kernel/interrupt.c
+++ b/arch/powerpc/kernel/interrupt.c
@@ -38,7 +38,7 @@ static inline bool exit_must_hard_disable(void)
#else
static inline bool exit_must_hard_disable(void)
{
- return false;
+ return true;
}
#endif
@@ -443,6 +443,9 @@ again:
if (unlikely(stack_store))
__hard_EE_RI_disable();
+#else
+ } else {
+ __hard_EE_RI_disable();
#endif /* CONFIG_PPC64 */
}
diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
index 2429cb1c7baa..764001deb060 100644
--- a/arch/powerpc/kernel/watchdog.c
+++ b/arch/powerpc/kernel/watchdog.c
@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/processor.h>
#include <linux/smp.h>
+#include <linux/sys_info.h>
#include <asm/interrupt.h>
#include <asm/paca.h>
@@ -235,7 +236,11 @@ static void watchdog_smp_panic(int cpu)
pr_emerg("CPU %d TB:%lld, last SMP heartbeat TB:%lld (%lldms ago)\n",
cpu, tb, last_reset, tb_to_ns(tb - last_reset) / 1000000);
- if (!sysctl_hardlockup_all_cpu_backtrace) {
+ if (sysctl_hardlockup_all_cpu_backtrace ||
+ (hardlockup_si_mask & SYS_INFO_ALL_BT)) {
+ trigger_allbutcpu_cpu_backtrace(cpu);
+ cpumask_clear(&wd_smp_cpus_ipi);
+ } else {
/*
* Try to trigger the stuck CPUs, unless we are going to
* get a backtrace on all of them anyway.
@@ -244,11 +249,9 @@ static void watchdog_smp_panic(int cpu)
smp_send_nmi_ipi(c, wd_lockup_ipi, 1000000);
__cpumask_clear_cpu(c, &wd_smp_cpus_ipi);
}
- } else {
- trigger_allbutcpu_cpu_backtrace(cpu);
- cpumask_clear(&wd_smp_cpus_ipi);
}
+ sys_info(hardlockup_si_mask & ~SYS_INFO_ALL_BT);
if (hardlockup_panic)
nmi_panic(NULL, "Hard LOCKUP");
@@ -415,9 +418,11 @@ DEFINE_INTERRUPT_HANDLER_NMI(soft_nmi_interrupt)
xchg(&__wd_nmi_output, 1); // see wd_lockup_ipi
- if (sysctl_hardlockup_all_cpu_backtrace)
+ if (sysctl_hardlockup_all_cpu_backtrace ||
+ (hardlockup_si_mask & SYS_INFO_ALL_BT))
trigger_allbutcpu_cpu_backtrace(cpu);
+ sys_info(hardlockup_si_mask & ~SYS_INFO_ALL_BT);
if (hardlockup_panic)
nmi_panic(regs, "Hard LOCKUP");