summaryrefslogtreecommitdiffstats
path: root/arch/sparc
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2020-08-19 17:50:40 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2021-01-03 20:10:54 -0500
commitd17b9ec777d86c590a77a404565be5d6005f2fe2 (patch)
tree263a32a58b9690baa08cffad7839c3c87a5eb9c3 /arch/sparc
parent5c8fe583cce542aa0b84adc939ce85293de36e5e (diff)
downloadlinux-d17b9ec777d86c590a77a404565be5d6005f2fe2.tar.gz
linux-d17b9ec777d86c590a77a404565be5d6005f2fe2.tar.bz2
linux-d17b9ec777d86c590a77a404565be5d6005f2fe2.zip
sparc64: get rid of fake_swapper_regs
no reason to have ->kregs of initial thread set up in a special way - we can keep them on stack, same as for every other thread. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/include/asm/thread_info_64.h1
-rw-r--r--arch/sparc/kernel/head_64.S2
-rw-r--r--arch/sparc/kernel/setup_64.c4
3 files changed, 2 insertions, 5 deletions
diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
index 42cd4cd3892e..8047a9caab2f 100644
--- a/arch/sparc/include/asm/thread_info_64.h
+++ b/arch/sparc/include/asm/thread_info_64.h
@@ -118,6 +118,7 @@ struct thread_info {
.task = &tsk, \
.current_ds = ASI_P, \
.preempt_count = INIT_PREEMPT_COUNT, \
+ .kregs = (struct pt_regs *)(init_stack+THREAD_SIZE)-1 \
}
/* how to get the thread information struct from C */
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S
index c5ff2472b3d9..72a5bdc833ea 100644
--- a/arch/sparc/kernel/head_64.S
+++ b/arch/sparc/kernel/head_64.S
@@ -706,7 +706,7 @@ tlb_fixup_done:
wr %g0, ASI_P, %asi
mov 1, %g1
sllx %g1, THREAD_SHIFT, %g1
- sub %g1, (STACKFRAME_SZ + STACK_BIAS), %g1
+ sub %g1, (STACKFRAME_SZ + STACK_BIAS + TRACEREG_SZ), %g1
add %g6, %g1, %sp
/* Set per-cpu pointer initially to zero, this makes
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index d87244197d5c..48abee4eee29 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -165,8 +165,6 @@ extern int root_mountflags;
char reboot_command[COMMAND_LINE_SIZE];
-static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
-
static void __init per_cpu_patch(void)
{
struct cpuid_patch_entry *p;
@@ -661,8 +659,6 @@ void __init setup_arch(char **cmdline_p)
rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
#endif
- task_thread_info(&init_task)->kregs = &fake_swapper_regs;
-
#ifdef CONFIG_IP_PNP
if (!ic_set_manually) {
phandle chosen = prom_finddevice("/chosen");