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author | Joerg Roedel <jroedel@suse.de> | 2023-10-26 17:05:58 +0200 |
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committer | Joerg Roedel <jroedel@suse.de> | 2023-10-26 17:05:58 +0200 |
commit | 3613047280ec42a4e1350fdc1a6dd161ff4008cc (patch) | |
tree | 6cf2f03f518537f3229e6066a8b2638755f0bb48 /arch/powerpc/kernel | |
parent | bbc70e0aec287e164344b1a071bd46466a4f29b3 (diff) | |
parent | 05d3ef8bba77c1b5f98d941d8b2d4aeab8118ef1 (diff) | |
download | linux-stable-3613047280ec42a4e1350fdc1a6dd161ff4008cc.tar.gz linux-stable-3613047280ec42a4e1350fdc1a6dd161ff4008cc.tar.bz2 linux-stable-3613047280ec42a4e1350fdc1a6dd161ff4008cc.zip |
Merge tag 'v6.6-rc7' into core
Linux 6.6-rc7
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r-- | arch/powerpc/kernel/entry_32.S | 8 | ||||
-rw-r--r-- | arch/powerpc/kernel/head_85xx.S | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/stacktrace.c | 27 |
3 files changed, 11 insertions, 26 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 9692acb0361f..7eda33a24bb4 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -137,8 +137,9 @@ ret_from_syscall: lis r4,icache_44x_need_flush@ha lwz r5,icache_44x_need_flush@l(r4) cmplwi cr0,r5,0 - bne- 2f + bne- .L44x_icache_flush #endif /* CONFIG_PPC_47x */ +.L44x_icache_flush_return: kuep_unlock lwz r4,_LINK(r1) lwz r5,_CCR(r1) @@ -172,10 +173,11 @@ syscall_exit_finish: b 1b #ifdef CONFIG_44x -2: li r7,0 +.L44x_icache_flush: + li r7,0 iccci r0,r0 stw r7,icache_44x_need_flush@l(r4) - b 1b + b .L44x_icache_flush_return #endif /* CONFIG_44x */ .globl ret_from_fork diff --git a/arch/powerpc/kernel/head_85xx.S b/arch/powerpc/kernel/head_85xx.S index 97e9ea0c7297..0f1641a31250 100644 --- a/arch/powerpc/kernel/head_85xx.S +++ b/arch/powerpc/kernel/head_85xx.S @@ -395,7 +395,7 @@ interrupt_base: #ifdef CONFIG_PPC_FPU FP_UNAVAILABLE_EXCEPTION #else - EXCEPTION(0x0800, FP_UNAVAIL, FloatingPointUnavailable, unknown_exception) + EXCEPTION(0x0800, FP_UNAVAIL, FloatingPointUnavailable, emulation_assist_interrupt) #endif /* System Call Interrupt */ diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c index b15f15dcacb5..e6a958a5da27 100644 --- a/arch/powerpc/kernel/stacktrace.c +++ b/arch/powerpc/kernel/stacktrace.c @@ -73,29 +73,12 @@ int __no_sanitize_address arch_stack_walk_reliable(stack_trace_consume_fn consum bool firstframe; stack_end = stack_page + THREAD_SIZE; - if (!is_idle_task(task)) { - /* - * For user tasks, this is the SP value loaded on - * kernel entry, see "PACAKSAVE(r13)" in _switch() and - * system_call_common(). - * - * Likewise for non-swapper kernel threads, - * this also happens to be the top of the stack - * as setup by copy_thread(). - * - * Note that stack backlinks are not properly setup by - * copy_thread() and thus, a forked task() will have - * an unreliable stack trace until it's been - * _switch()'ed to for the first time. - */ - stack_end -= STACK_USER_INT_FRAME_SIZE; - } else { - /* - * idle tasks have a custom stack layout, - * c.f. cpu_idle_thread_init(). - */ + + // See copy_thread() for details. + if (task->flags & PF_KTHREAD) stack_end -= STACK_FRAME_MIN_SIZE; - } + else + stack_end -= STACK_USER_INT_FRAME_SIZE; if (task == current) sp = current_stack_frame(); |