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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-10 15:29:27 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-10 15:29:27 +0300 |
commit | b970afcfcabd63cd3832e95db096439c177c3592 (patch) | |
tree | b63e662c780e02617916f4c0269e2adddc67f5a0 /arch/powerpc/include/asm/cpuidle.h | |
parent | 8ea5b2abd07e2280a332bd9c1a7f4dd15b9b6c13 (diff) | |
parent | 8150a153c013aa2dd1ffae43370b89ac1347a7fb (diff) | |
download | linux-b970afcfcabd63cd3832e95db096439c177c3592.tar.xz |
Merge tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Slightly delayed due to the issue with printk() calling
probe_kernel_read() interacting with our new user access prevention
stuff, but all fixed now.
The only out-of-area changes are the addition of a cpuhp_state, small
additions to Documentation and MAINTAINERS updates.
Highlights:
- Support for Kernel Userspace Access/Execution Prevention (like
SMAP/SMEP/PAN/PXN) on some 64-bit and 32-bit CPUs. This prevents
the kernel from accidentally accessing userspace outside
copy_to/from_user(), or ever executing userspace.
- KASAN support on 32-bit.
- Rework of where we map the kernel, vmalloc, etc. on 64-bit hash to
use the same address ranges we use with the Radix MMU.
- A rewrite into C of large parts of our idle handling code for
64-bit Book3S (ie. power8 & power9).
- A fast path entry for syscalls on 32-bit CPUs, for a 12-17% speedup
in the null_syscall benchmark.
- On 64-bit bare metal we have support for recovering from errors
with the time base (our clocksource), however if that fails
currently we hang in __delay() and never crash. We now have support
for detecting that case and short circuiting __delay() so we at
least panic() and reboot.
- Add support for optionally enabling the DAWR on Power9, which had
to be disabled by default due to a hardware erratum. This has the
effect of enabling hardware breakpoints for GDB, the downside is a
badly behaved program could crash the machine by pointing the DAWR
at cache inhibited memory. This is opt-in obviously.
- xmon, our crash handler, gets support for a read only mode where
operations that could change memory or otherwise disturb the system
are disabled.
Plus many clean-ups, reworks and minor fixes etc.
Thanks to: Christophe Leroy, Akshay Adiga, Alastair D'Silva, Alexey
Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar,
Anton Blanchard, Ben Hutchings, Bo YU, Breno Leitao, Cédric Le Goater,
Christopher M. Riedl, Christoph Hellwig, Colin Ian King, David Gibson,
Ganesh Goudar, Gautham R. Shenoy, George Spelvin, Greg Kroah-Hartman,
Greg Kurz, Horia Geantă, Jagadeesh Pagadala, Joel Stanley, Joe
Perches, Julia Lawall, Laurentiu Tudor, Laurent Vivier, Lukas Bulwahn,
Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael
Neuling, Mukesh Ojha, Nathan Fontenot, Nathan Lynch, Nicholas Piggin,
Nick Desaulniers, Oliver O'Halloran, Peng Hao, Qian Cai, Ravi
Bangoria, Rick Lindsley, Russell Currey, Sachin Sant, Stewart Smith,
Sukadev Bhattiprolu, Thomas Huth, Tobin C. Harding, Tyrel Datwyler,
Valentin Schneider, Wei Yongjun, Wen Yang, YueHaibing"
* tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (205 commits)
powerpc/64s: Use early_mmu_has_feature() in set_kuap()
powerpc/book3s/64: check for NULL pointer in pgd_alloc()
powerpc/mm: Fix hugetlb page initialization
ocxl: Fix return value check in afu_ioctl()
powerpc/mm: fix section mismatch for setup_kup()
powerpc/mm: fix redundant inclusion of pgtable-frag.o in Makefile
powerpc/mm: Fix makefile for KASAN
powerpc/kasan: add missing/lost Makefile
selftests/powerpc: Add a signal fuzzer selftest
powerpc/booke64: set RI in default MSR
ocxl: Provide global MMIO accessors for external drivers
ocxl: move event_fd handling to frontend
ocxl: afu_irq only deals with IRQ IDs, not offsets
ocxl: Allow external drivers to use OpenCAPI contexts
ocxl: Create a clear delineation between ocxl backend & frontend
ocxl: Don't pass pci_dev around
ocxl: Split pci.c
ocxl: Remove some unused exported symbols
ocxl: Remove superfluous 'extern' from headers
ocxl: read_pasid never returns an error, so make it void
...
Diffstat (limited to 'arch/powerpc/include/asm/cpuidle.h')
-rw-r--r-- | arch/powerpc/include/asm/cpuidle.h | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/arch/powerpc/include/asm/cpuidle.h b/arch/powerpc/include/asm/cpuidle.h index 43e5f31fe64d..9844b3ded187 100644 --- a/arch/powerpc/include/asm/cpuidle.h +++ b/arch/powerpc/include/asm/cpuidle.h @@ -27,10 +27,11 @@ * the THREAD_WINKLE_BITS are set, which indicate which threads have not * yet woken from the winkle state. */ -#define PNV_CORE_IDLE_LOCK_BIT 0x10000000 +#define NR_PNV_CORE_IDLE_LOCK_BIT 28 +#define PNV_CORE_IDLE_LOCK_BIT (1ULL << NR_PNV_CORE_IDLE_LOCK_BIT) +#define PNV_CORE_IDLE_WINKLE_COUNT_SHIFT 16 #define PNV_CORE_IDLE_WINKLE_COUNT 0x00010000 -#define PNV_CORE_IDLE_WINKLE_COUNT_ALL_BIT 0x00080000 #define PNV_CORE_IDLE_WINKLE_COUNT_BITS 0x000F0000 #define PNV_CORE_IDLE_THREAD_WINKLE_BITS_SHIFT 8 #define PNV_CORE_IDLE_THREAD_WINKLE_BITS 0x0000FF00 @@ -68,16 +69,6 @@ #define ERR_DEEP_STATE_ESL_MISMATCH -2 #ifndef __ASSEMBLY__ -/* Additional SPRs that need to be saved/restored during stop */ -struct stop_sprs { - u64 pid; - u64 ldbar; - u64 fscr; - u64 hfscr; - u64 mmcr1; - u64 mmcr2; - u64 mmcra; -}; #define PNV_IDLE_NAME_LEN 16 struct pnv_idle_states_t { @@ -92,10 +83,6 @@ struct pnv_idle_states_t { extern struct pnv_idle_states_t *pnv_idle_states; extern int nr_pnv_idle_states; -extern u32 pnv_fastsleep_workaround_at_entry[]; -extern u32 pnv_fastsleep_workaround_at_exit[]; - -extern u64 pnv_first_deep_stop_state; unsigned long pnv_cpu_offline(unsigned int cpu); int validate_psscr_val_mask(u64 *psscr_val, u64 *psscr_mask, u32 flags); |