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authorLinus Torvalds <torvalds@linux-foundation.org>2018-10-26 23:36:21 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-26 23:36:21 +0200
commit685f7e4f161425b137056abe35ba8ef7b669d83d (patch)
tree550dd1f5dc9e852cfeec26bf5e3ce9dd060c8a33 /arch/powerpc/platforms/4xx
parentMerge tag 'nfs-for-4.20-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs (diff)
parentRevert "selftests/powerpc: Fix out-of-tree build errors" (diff)
downloadlinux-685f7e4f161425b137056abe35ba8ef7b669d83d.tar.xz
linux-685f7e4f161425b137056abe35ba8ef7b669d83d.zip
Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman: "Notable changes: - A large series to rewrite our SLB miss handling, replacing a lot of fairly complicated asm with much fewer lines of C. - Following on from that, we now maintain a cache of SLB entries for each process and preload them on context switch. Leading to a 27% speedup for our context switch benchmark on Power9. - Improvements to our handling of SLB multi-hit errors. We now print more debug information when they occur, and try to continue running by flushing the SLB and reloading, rather than treating them as fatal. - Enable THP migration on 64-bit Book3S machines (eg. Power7/8/9). - Add support for physical memory up to 2PB in the linear mapping on 64-bit Book3S. We only support up to 512TB as regular system memory, otherwise the percpu allocator runs out of vmalloc space. - Add stack protector support for 32 and 64-bit, with a per-task canary. - Add support for PTRACE_SYSEMU and PTRACE_SYSEMU_SINGLESTEP. - Support recognising "big cores" on Power9, where two SMT4 cores are presented to us as a single SMT8 core. - A large series to cleanup some of our ioremap handling and PTE flags. - Add a driver for the PAPR SCM (storage class memory) interface, allowing guests to operate on SCM devices (acked by Dan). - Changes to our ftrace code to handle very large kernels, where we need to use a trampoline to get to ftrace_caller(). And many other smaller enhancements and cleanups. Thanks to: Alan Modra, Alistair Popple, Aneesh Kumar K.V, Anton Blanchard, Aravinda Prasad, Bartlomiej Zolnierkiewicz, Benjamin Herrenschmidt, Breno Leitao, Cédric Le Goater, Christophe Leroy, Christophe Lombard, Dan Carpenter, Daniel Axtens, Finn Thain, Gautham R. Shenoy, Gustavo Romero, Haren Myneni, Hari Bathini, Jia Hongtao, Joel Stanley, John Allen, Laurent Dufour, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Hairgrove, Masahiro Yamada, Michael Bringmann, Michael Neuling, Michal Suchanek, Murilo Opsfelder Araujo, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Paul Mackerras, Petr Vorel, Rashmica Gupta, Reza Arbab, Rob Herring, Sam Bobroff, Samuel Mendoza-Jonas, Scott Wood, Stan Johnson, Stephen Rothwell, Stewart Smith, Suraj Jitindar Singh, Tyrel Datwyler, Vaibhav Jain, Vasant Hegde, YueHaibing, zhong jiang" * tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (221 commits) Revert "selftests/powerpc: Fix out-of-tree build errors" powerpc/msi: Fix compile error on mpc83xx powerpc: Fix stack protector crashes on CPU hotplug powerpc/traps: restore recoverability of machine_check interrupts powerpc/64/module: REL32 relocation range check powerpc/64s/radix: Fix radix__flush_tlb_collapsed_pmd double flushing pmd selftests/powerpc: Add a test of wild bctr powerpc/mm: Fix page table dump to work on Radix powerpc/mm/radix: Display if mappings are exec or not powerpc/mm/radix: Simplify split mapping logic powerpc/mm/radix: Remove the retry in the split mapping logic powerpc/mm/radix: Fix small page at boundary when splitting powerpc/mm/radix: Fix overuse of small pages in splitting logic powerpc/mm/radix: Fix off-by-one in split mapping logic powerpc/ftrace: Handle large kernel configs powerpc/mm: Fix WARN_ON with THP NUMA migration selftests/powerpc: Fix out-of-tree build errors powerpc/time: no steal_time when CONFIG_PPC_SPLPAR is not selected powerpc/time: Only set CONFIG_ARCH_HAS_SCALED_CPUTIME on PPC64 powerpc/time: isolate scaled cputime accounting in dedicated functions. ...
Diffstat (limited to 'arch/powerpc/platforms/4xx')
-rw-r--r--arch/powerpc/platforms/4xx/ocm.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/powerpc/platforms/4xx/ocm.c b/arch/powerpc/platforms/4xx/ocm.c
index 69d9f60d9fe5..f5bbd4563342 100644
--- a/arch/powerpc/platforms/4xx/ocm.c
+++ b/arch/powerpc/platforms/4xx/ocm.c
@@ -113,7 +113,6 @@ static void __init ocm_init_node(int count, struct device_node *node)
int len;
struct resource rsrc;
- int ioflags;
ocm = ocm_get_node(count);
@@ -179,9 +178,8 @@ static void __init ocm_init_node(int count, struct device_node *node)
/* ioremap the non-cached region */
if (ocm->nc.memtotal) {
- ioflags = _PAGE_NO_CACHE | _PAGE_GUARDED | _PAGE_EXEC;
ocm->nc.virt = __ioremap(ocm->nc.phys, ocm->nc.memtotal,
- ioflags);
+ _PAGE_EXEC | PAGE_KERNEL_NCG);
if (!ocm->nc.virt) {
printk(KERN_ERR
@@ -195,9 +193,8 @@ static void __init ocm_init_node(int count, struct device_node *node)
/* ioremap the cached region */
if (ocm->c.memtotal) {
- ioflags = _PAGE_EXEC;
ocm->c.virt = __ioremap(ocm->c.phys, ocm->c.memtotal,
- ioflags);
+ _PAGE_EXEC | PAGE_KERNEL);
if (!ocm->c.virt) {
printk(KERN_ERR