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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 19:34:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 19:34:17 -0700 |
| commit | d3511f53bb2475f2a4e8460bee5a1ae6dea2a433 (patch) | |
| tree | 8141260e4fb705d8f94548150572433c685e6829 /arch/parisc/kernel/head.S | |
| parent | 02aff8db6438ce29371fd9cd54c57213f4bb4536 (diff) | |
| parent | 62217beb394e654bbd2bb87c533dadd2d8bf62c6 (diff) | |
| download | linux-d3511f53bb2475f2a4e8460bee5a1ae6dea2a433.tar.gz linux-d3511f53bb2475f2a4e8460bee5a1ae6dea2a433.tar.bz2 linux-d3511f53bb2475f2a4e8460bee5a1ae6dea2a433.zip | |
Merge branch 'parisc-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Many great new features, fixes and optimizations, including:
- Convert page table updates to use per-pagetable spinlocks which
overall improves performance on SMP machines a lot, by Mikulas
Patocka
- Kernel debugger (KGDB) support, by Sven Schnelle
- KPROBES support, by Sven Schnelle
- Lots of TLB lock/flush improvements, by Dave Anglin
- Drop DISCONTIGMEM and switch to SPARSEMEM
- Added JUMP_LABEL, branch runtime-patching support
- Lots of other small speedups and cleanups, e.g. for QEMU, stack
randomization, avoidance of name clashes, documentation updates,
etc ..."
* 'parisc-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (28 commits)
parisc: Add static branch and JUMP_LABEL feature
parisc: Use PA_ASM_LEVEL in boot code
parisc: Rename LEVEL to PA_ASM_LEVEL to avoid name clash with DRBD code
parisc: Update huge TLB page support to use per-pagetable spinlock
parisc: Use per-pagetable spinlock
parisc: Allow live-patching of __meminit functions
parisc: Add memory barrier to asm pdc and sync instructions
parisc: Add memory clobber to TLB purges
parisc: Use ldcw instruction for SMP spinlock release barrier
parisc: Remove lock code to serialize TLB operations in pacache.S
parisc: Switch from DISCONTIGMEM to SPARSEMEM
parisc: enable wide mode early
parisc: update feature lists
parisc: Show n/a if product number not available
parisc: remove unused flags parameter in __patch_text()
doc: update kprobes supported architecture list
parisc: Implement kretprobes
parisc: remove kprobes.h from generic-y
parisc: Implement kprobes
parisc: add functions required by KPROBE_EVENTS
...
Diffstat (limited to 'arch/parisc/kernel/head.S')
| -rw-r--r-- | arch/parisc/kernel/head.S | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/parisc/kernel/head.S b/arch/parisc/kernel/head.S index fbb4e43fda05..d12de2a13753 100644 --- a/arch/parisc/kernel/head.S +++ b/arch/parisc/kernel/head.S @@ -22,7 +22,7 @@ #include <linux/linkage.h> #include <linux/init.h> - .level LEVEL + .level PA_ASM_LEVEL __INITDATA ENTRY(boot_args) @@ -258,7 +258,7 @@ stext_pdc_ret: ldo R%PA(fault_vector_11)(%r10),%r10 $is_pa20: - .level LEVEL /* restore 1.1 || 2.0w */ + .level PA_ASM_LEVEL /* restore 1.1 || 2.0w */ #endif /*!CONFIG_64BIT*/ load32 PA(fault_vector_20),%r10 @@ -329,6 +329,19 @@ smp_slave_stext: mtsp %r0,%sr6 mtsp %r0,%sr7 +#ifdef CONFIG_64BIT + /* + * Enable Wide mode early, in case the task_struct for the idle + * task in smp_init_current_idle_task was allocated above 4GB. + */ +1: mfia %rp /* clear upper part of pcoq */ + ldo 2f-1b(%rp),%rp + depdi 0,31,32,%rp + bv (%rp) + ssm PSW_SM_W,%r0 +2: +#endif + /* Initialize the SP - monarch sets up smp_init_current_idle_task */ load32 PA(smp_init_current_idle_task),%sp LDREG 0(%sp),%sp /* load task address */ |