AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-28 11:18:45 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
005f78cd88
linux_dsm_epyc7002/arch/arm64/include/asm
History
Ard Biesheuvel 005f78cd88 arm64: defer reloading a task's FPSIMD state to userland resume 
If a task gets scheduled out and back in again and nothing has touched
its FPSIMD state in the mean time, there is really no reason to reload
it from memory. Similarly, repeated calls to kernel_neon_begin() and
kernel_neon_end() will preserve and restore the FPSIMD state every time.

This patch defers the FPSIMD state restore to the last possible moment,
i.e., right before the task returns to userland. If a task does not return to
userland at all (for any reason), the existing FPSIMD state is preserved
and may be reused by the owning task if it gets scheduled in again on the
same CPU.

This patch adds two more functions to abstract away from straight FPSIMD
register file saves and restores:
- fpsimd_restore_current_state -> ensure current's FPSIMD state is loaded
- fpsimd_flush_task_state -> invalidate live copies of a task's FPSIMD state

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2014-05-08 11:31:57 +02:00
..
xen xen/arm64: do not call the swiotlb functions twice 2013-12-11 16:21:00 +00:00
arch_timer.h ARM64: arch_timer: add support to configure and enable event stream 2013-09-26 09:47:43 +01:00
asm-offsets.h
assembler.h arm64: asm: add CPU_LE & CPU_BE assembler helpers 2013-10-25 15:59:38 +01:00
atomic.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
barrier.h arm64: barriers: add dmb barrier 2014-03-10 11:57:40 +00:00
bitops.h arm64: klib: Optimised atomic bitops 2013-03-21 17:39:31 +00:00
cache.h
cacheflush.h arm64: Implement coherent DMA API based on swiotlb 2014-02-27 17:16:59 +00:00
cachetype.h
cmpxchg.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
compat.h ARM64: perf: support dwarf unwinding in compat mode 2014-03-13 11:22:38 +00:00
compiler.h
cpu_ops.h arm64: kernel: cpu_{suspend/resume} implementation 2013-12-16 17:17:31 +00:00
cpufeature.h arm64: enable generic CPU feature modalias matching for this architecture 2014-03-14 18:01:36 +00:00
cputable.h
cputype.h Merge tag 'arm64-suspend' of git://linux-arm.org/linux-2.6-lp into upstream 2013-12-19 17:57:51 +00:00
debug-monitors.h arm64: KGDB: Add Basic KGDB support 2014-02-26 11:16:25 +00:00
device.h arm64: device: add iommu pointer to device archdata 2013-06-11 18:15:55 +01:00
dma-contiguous.h arm64: fix build error if DMA_CMA is enabled 2014-01-27 12:00:25 +00:00
dma-mapping.h arm64: Implement coherent DMA API based on swiotlb 2014-02-27 17:16:59 +00:00
elf.h arm64: compat: add support for big-endian (BE8) AArch32 binaries 2013-10-25 15:59:35 +01:00
esr.h arm64: fix typo: s/SERRROR/SERROR/ 2014-02-05 10:42:32 +00:00
exception.h arm64: Use irqchip_init() for interrupt controller initialisation 2013-03-26 16:02:23 +00:00
exec.h
fb.h
fixmap.h arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
fpsimd.h arm64: defer reloading a task's FPSIMD state to userland resume 2014-05-08 11:31:57 +02:00
fpsimdmacros.h arm64: move FP-SIMD save/restore code to a macro 2012-12-05 11:26:50 +00:00
futex.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
hardirq.h arm64: enable generic clockevent broadcast 2013-12-16 17:17:35 +00:00
hugetlb.h ARM64: mm: HugeTLB support. 2013-06-14 09:52:40 +01:00
hw_breakpoint.h
hwcap.h arm64: advertise ARMv8 extensions to 32-bit compat ELF binaries 2014-03-04 08:06:32 +00:00
hypervisor.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
insn.h arm64: introduce aarch64_insn_gen_{nop|branch_imm}() helper functions 2014-01-08 15:21:29 +00:00
io.h arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
irq.h arm64: add CPU_HOTPLUG infrastructure 2013-10-25 11:33:21 +01:00
irqflags.h arm64: Add macros to manage processor debug state 2014-02-26 11:16:25 +00:00
jump_label.h arm64, jump label: optimize jump label implementation 2014-01-08 15:23:53 +00:00
Kbuild arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
kgdb.h arm64: KGDB: Add Basic KGDB support 2014-02-26 11:16:25 +00:00
kvm_arm.h Merge tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2014-04-02 14:50:10 -07:00
kvm_asm.h arm64: KVM: trap VM system registers until MMU and caches are ON 2014-03-03 01:15:21 +00:00
kvm_coproc.h arm64: KVM: 32bit handling of coprocessor traps 2013-06-12 16:42:16 +01:00
kvm_emulate.h A handful of fixes for KVM/arm64: 2013-11-11 12:05:20 +01:00
kvm_host.h arm64: KVM: Add Kconfig option for max VCPUs per-Guest 2013-12-28 10:28:50 +00:00
kvm_mmio.h arm64: KVM: MMIO access backend 2013-06-07 14:03:38 +01:00
kvm_mmu.h arm64: KVM: flush VM pages before letting the guest enable caches 2014-03-03 01:15:22 +00:00
kvm_psci.h arm64: KVM: PSCI implementation 2013-06-12 16:40:32 +01:00
linkage.h arm64: fix alignment padding in assembly code 2012-10-20 11:12:01 +01:00
memblock.h
memory.h arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
mmu_context.h arm64: mm: don't bother invalidating the icache in switch_mm 2013-06-07 18:00:11 +01:00
mmu.h arm64: initialize pgprot info earlier in boot 2014-04-07 16:36:15 -07:00
module.h
neon.h arm64: add support for kernel mode NEON 2013-08-20 12:12:26 +01:00
page.h
percpu.h arm64: Fix !CONFIG_SMP kernel build 2014-02-28 16:12:25 +00:00
perf_event.h arm64: perf: add guest vs host discrimination 2013-01-29 16:56:17 +00:00
pgalloc.h arm64: handle pgtable_page_ctor() fail 2013-11-15 09:32:16 +09:00
pgtable-2level-hwdef.h arm64: Use 42-bit address space with 64K pages 2013-11-05 17:23:52 +00:00
pgtable-2level-types.h ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" 2013-08-22 11:44:41 +01:00
pgtable-3level-hwdef.h
pgtable-3level-types.h ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" 2013-08-22 11:44:41 +01:00
pgtable-hwdef.h arm64: Update the TCR_EL1 translation granule definitions for 16K pages 2014-04-03 10:43:11 +01:00
pgtable.h - KGDB support for arm64 2014-03-31 15:01:45 -07:00
pmu.h
proc-fns.h arm64: kernel: suspend/resume registers save/restore 2013-12-16 17:17:31 +00:00
processor.h arm64: compat: add support for big-endian (BE8) AArch32 binaries 2013-10-25 15:59:35 +01:00
psci.h arm64: remove return value form psci_init() 2014-02-28 14:14:53 +00:00
ptrace.h ARM64: perf: support dwarf unwinding in compat mode 2014-03-13 11:22:38 +00:00
shmparam.h
sigcontext.h
signal32.h
smp_plat.h arm64: kernel: build MPIDR_EL1 hash function data structure 2013-12-16 17:17:30 +00:00
smp.h arm64: add CPU_HOTPLUG infrastructure 2013-10-25 11:33:21 +01:00
sparsemem.h
spinlock_types.h arm64: Fix the endianness of arch_spinlock_t 2013-10-25 16:10:22 +01:00
spinlock.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
stacktrace.h
stat.h
string.h arm64: klib: Optimised string functions 2013-03-21 17:39:30 +00:00
suspend.h arm64: kernel: cpu_{suspend/resume} implementation 2013-12-16 17:17:31 +00:00
sync_bitops.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
syscall.h arm64: check for number of arguments in syscall_get/set_arguments() 2013-10-23 15:45:35 +01:00
syscalls.h arm64: switch to generic sigaltstack 2013-02-14 09:17:29 -05:00
system_misc.h arm64: use common reboot infrastructure 2013-07-19 15:57:08 +01:00
thread_info.h arm64: defer reloading a task's FPSIMD state to userland resume 2014-05-08 11:31:57 +02:00
timex.h arm64: kernel: compiling issue, need delete read_current_timer() 2013-06-10 17:58:20 +01:00
tlb.h arm64: Convert asm/tlb.h to generic mmu_gather 2014-02-26 11:16:27 +00:00
tlbflush.h ARM64: mm: THP support. 2013-06-14 09:52:41 +01:00
topology.h arm64: topology: Implement basic CPU topology support 2014-03-04 10:30:07 +00:00
traps.h
uaccess.h arm64: Fix __range_ok macro 2014-03-20 17:41:27 +00:00
ucontext.h arm64: fix padding computation in struct ucontext 2013-03-18 10:42:16 +00:00
unistd32.h arm64: compat: Wire up new AArch32 syscalls 2014-02-05 12:03:52 +00:00
unistd.h compat: let architectures define __ARCH_WANT_COMPAT_SYS_GETDENTS64 2014-03-04 09:05:33 +01:00
vdso_datapage.h
vdso.h
virt.h Revert "arm64: virt: ensure visibility of __boot_cpu_mode" 2014-04-05 10:06:20 +01:00
word-at-a-time.h arm64: dcache: select DCACHE_WORD_ACCESS for little-endian CPUs 2013-12-19 17:43:08 +00:00