diff options
| author |   Yunhong Jiang <yunhong.jiang@linux.intel.com> | 2017-03-08 23:13:28 -0800 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@linux.intel.com> | 2017-03-08 23:36:15 -0800 |
| commit | 52f993b8e89487ec9ee15a7fb4979e0f09a45b27 (patch) | |
| tree | d65304486afe0bea4a311c783c0d72791c8c0aa2 /kernel/arch/parisc/kernel/setup.c | |
| parent | c189ccac5702322ed843fe17057035b7222a59b6 (diff) | |
Upgrade to 4.4.50-rt62
The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it
to 4.4.50-rt62.
The command to achieve it is:
a) Clone a git repo from
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
b) Get the diff between this two changesets:
git diff 640eca2901f3435e616157b11379d3223a44b391
705619beeea1b0b48219a683fd1a901a86fdaf5e
where the two commits are:
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
640eca2901f3435e616157b11379d3223a44b391
640eca2901f3 v4.4.6-rt14
localversion-rt
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
705619beeea1b0b48219a683fd1a901a86fdaf5e
705619beeea1 Linux 4.4.50-rt62
localversion-rt
c) One patch has been backported thus revert the patch before applying.
filterdiff -p1 -x scripts/package/Makefile
~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run
Upstream status: backport
Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/arch/parisc/kernel/setup.c')
| -rw-r--r-- | kernel/arch/parisc/kernel/setup.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/arch/parisc/kernel/setup.c b/kernel/arch/parisc/kernel/setup.c index f7ea626e2..2e66a8877 100644 --- a/kernel/arch/parisc/kernel/setup.c +++ b/kernel/arch/parisc/kernel/setup.c @@ -38,6 +38,7 @@ #include <linux/export.h> #include <asm/processor.h> +#include <asm/sections.h> #include <asm/pdc.h> #include <asm/led.h> #include <asm/machdep.h> /* for pa7300lc_init() proto */ @@ -140,6 +141,13 @@ void __init setup_arch(char **cmdline_p) #endif printk(KERN_CONT ".\n"); + /* + * Check if initial kernel page mappings are sufficient. + * panic early if not, else we may access kernel functions + * and variables which can't be reached. + */ + if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE) + panic("KERNEL_INITIAL_ORDER too small!"); pdc_console_init(); @@ -326,6 +334,10 @@ static int __init parisc_init(void) /* tell PDC we're Linux. Nevermind failure. */ pdc_stable_write(0x40, &osid, sizeof(osid)); + /* start with known state */ + flush_cache_all_local(); + flush_tlb_all_local(NULL); + processor_init(); #ifdef CONFIG_SMP pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n", |