BMC/Intel-BMC/linux.git/arch/parisc, branch dev-4.17

parisc: Define mb() and add memory barriers to assembler unlock sequences

2018-08-15T16:10:56+00:00

commit fedb8da96355f5f64353625bf96dc69423ad1826 upstream. For years I thought all parisc machines executed loads and stores in order. However, Jeff Law recently indicated on gcc-patches that this is not correct. There are various degrees of out-of-order execution all the way back to the PA7xxx processor series (hit-under-miss). The PA8xxx series has full out-of-order execution for both integer operations, and loads and stores. This is described in the following article: http://web.archive.org/web/20040214092531/http://www.cpus.hp.com/technical_references/advperf.shtml For this reason, we need to define mb() and to insert a memory barrier before the store unlocking spinlocks. This ensures that all memory accesses are complete prior to unlocking. The ldcw instruction performs the same function on entry. Signed-off-by: John David Anglin Cc: stable@vger.kernel.org # 4.0+ Signed-off-by: Helge Deller Signed-off-by: Greg Kroah-Hartman

parisc: Enable CONFIG_MLONGCALLS by default

2018-08-15T16:10:56+00:00

commit 66509a276c8c1d19ee3f661a41b418d101c57d29 upstream. Enable the -mlong-calls compiler option by default, because otherwise in most cases linking the vmlinux binary fails due to truncations of R_PARISC_PCREL22F relocations. This fixes building the 64-bit defconfig. Cc: stable@vger.kernel.org # 4.0+ Signed-off-by: Helge Deller Signed-off-by: Greg Kroah-Hartman

parisc: Move setup_profiling_timer() out of init section

2018-05-18T14:21:49+00:00

No other architecture has setup_profiling_timer() in the init section, thus on parisc we face this section mismatch warning: Reference from the function devm_device_add_group() to the function .init.text:setup_profiling_timer() Signed-off-by: Helge Deller

parisc: Move find_pa_parent_type() out of init section

2018-05-18T14:21:48+00:00

The 0-DAY kernel test infrastructure reported that inet_put_port() may reference the find_pa_parent_type() function, so it can't be moved into the init section. Fixes: b86db40e1ecc ("parisc: Move various functions and strings to init section") Signed-off-by: Helge Deller

parisc: Fix section mismatches

2018-05-02T19:47:35+00:00

Fix three section mismatches: 1) Section mismatch in reference from the function ioread8() to the function .init.text:pcibios_init_bridge() 2) Section mismatch in reference from the function free_initmem() to the function .init.text:map_pages() 3) Section mismatch in reference from the function ccio_ioc_init() to the function .init.text:count_parisc_driver() Signed-off-by: Helge Deller

parisc: drivers.c: Fix section mismatches

2018-05-02T19:47:27+00:00

Fix two section mismatches in drivers.c: 1) Section mismatch in reference from the function alloc_tree_node() to the function .init.text:create_tree_node(). 2) Section mismatch in reference from the function walk_native_bus() to the function .init.text:alloc_pa_dev(). Signed-off-by: Helge Deller

parisc: time: Convert read_persistent_clock() to read_persistent_clock64()

2018-04-20T18:18:21+00:00

The read_persistent_clock() uses a timespec, which is not year 2038 safe on 32bit systems. On parisc architecture, we have implemented generic RTC drivers that can be used to compensate the system suspend time, but the RTC time can not represent the nanosecond resolution, so this patch just converts to read_persistent_clock64() with timespec64. Signed-off-by: Baolin Wang Acked-by: Arnd Bergmann Signed-off-by: Helge Deller

parisc: Document rules regarding checksum of HPMC handler

2018-04-18T14:17:13+00:00

Signed-off-by: Helge Deller

parisc: Make bzImage default build target

2018-04-18T13:44:06+00:00

Debian uses "make all" to build the Linux kernel, thus to be able to use the self-decompressing kernel as default debian kernel we need to make bzImage the default build target. Signed-off-by: Helge Deller

parisc: Fix missing binfmt_elf32.o build error

2018-04-14T09:17:59+00:00

Commit 71d577db01a5 ("parisc: Switch to generic COMPAT_BINFMT_ELF") removed the binfmt_elf32.c source file, but missed to drop the object file from the list of object files the Makefile, which then results in a build error. Fixes: 71d577db01a5 ("parisc: Switch to generic COMPAT_BINFMT_ELF") Reported-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: Helge Deller