- 07 1月, 2016 2 次提交
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由 David Matlack 提交于
The comment had the meaning of mmu.gva_to_gpa and nested_mmu.gva_to_gpa swapped. Fix that, and also add some details describing how each translation works. Signed-off-by: NDavid Matlack <dmatlack@google.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
Merge tag 'kvm-arm-for-4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-next KVM/ARM changes for Linux v4.5 - Complete rewrite of the arm64 world switch in C, hopefully paving the way for more sharing with the 32bit code, better maintainability and easier integration of new features. Also smaller and slightly faster in some cases... - Support for 16bit VM identifiers - Various cleanups
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- 19 12月, 2015 1 次提交
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由 Takuya Yoshikawa 提交于
Not just in order to clean up the code, but to make it faster by using enhanced instructions: the initialization became 20-30% faster on our testing machine. Signed-off-by: NTakuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 18 12月, 2015 7 次提交
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由 Pavel Fedin 提交于
Before commit 662d9715 ("arm/arm64: KVM: Kill CONFIG_KVM_ARM_{VGIC,TIMER}") is was possible to compile the kernel without vGIC and vTimer support. Commit message says about possibility to detect vGIC support in runtime, but this has never been implemented. This patch introduces runtime check, restoring the lost functionality. It again allows to use KVM on hardware without vGIC. Interrupt controller has to be emulated in userspace in this case. -ENODEV return code from probe function means there's no GIC at all. -ENXIO happens when, for example, there is GIC node in the device tree, but it does not specify vGIC resources. Any other error code is still treated as full stop because it might mean some really serious problems. Signed-off-by: NPavel Fedin <p.fedin@samsung.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Fengguang Wu 提交于
Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NFengguang Wu <fengguang.wu@intel.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Vladimir Murzin 提交于
The ARMv8.1 architecture extension allows to choose between 8-bit and 16-bit of VMID, so use this capability for KVM. Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NVladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Vladimir Murzin 提交于
kvm_arm.h is included from both C code and assembly code; however some definitions in this header supplied with U/UL/ULL suffixes which might confuse assembly once they got evaluated. We have _AC macro for such cases, so just wrap problem places with it. Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NVladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Vladimir Murzin 提交于
Since commit a987370f ("arm64: KVM: Fix stage-2 PGD allocation to have per-page refcounting") there is no reference to S2_PGD_ORDER, so kill it for the good. Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NVladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Marc Zyngier 提交于
The debug trapping code is pretty heavy on the "inline" attribute, but most functions are actually referenced in the sysreg tables, making the inlining imposible. Removing the useless inline qualifier seems the right thing to do, having verified that the output code is similar. Cc: Alex Bennée <alex.bennee@linaro.org> Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Marc Zyngier 提交于
David Binderman reported that the exception injection code had a couple of unused variables lingering around. Upon examination, it looked like this code could do with an anticipated spring cleaning, which amounts to deduplicating the CPSR/SPSR update, and making it look a bit more like the architecture spec. The spurious variables are removed in the process. Reported-by: NDavid Binderman <dcb314@hotmail.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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- 17 12月, 2015 16 次提交
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由 Andrey Smetanin 提交于
It's possible that guest send us Hyper-V EOM at the middle of Hyper-V SynIC timer running, so we start processing of Hyper-V SynIC timers in vcpu context and stop the Hyper-V SynIC timer unconditionally: host guest ------------------------------------------------------------------------------ start periodic stimer start periodic timer timer expires after 15ms send expiration message into guest restart periodic timer timer expires again after 15 ms msg slot is still not cleared so setup ->msg_pending (1) restart periodic timer process timer msg and clear slot ->msg_pending was set: send EOM into host received EOM kvm_make_request(KVM_REQ_HV_STIMER) kvm_hv_process_stimers(): ... stimer_stop() if (time_now >= stimer->exp_time) stimer_expiration(stimer); Because the timer was rearmed at (1), time_now < stimer->exp_time and stimer_expiration is not called. The timer then never fires. The patch fixes such situation by not stopping Hyper-V SynIC timer at all, because it's safe to restart it without stop in vcpu context and timer callback always returns HRTIMER_NORESTART. Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Borislav Petkov 提交于
It looks like this in action: kvm [5197]: vcpu0, guest rIP: 0xffffffff810187ba unhandled rdmsr: 0xc001102 and helps to pinpoint quickly where in the guest we did the unsupported thing. Signed-off-by: NBorislav Petkov <bp@suse.de> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> --- I am sending this as RFC because the error messages it produces are very ugly. Because of inlining, the original line is lost. The alternative is to change vmcs_read/write/checkXX into macros, but then you need to have a single huge BUILD_BUG_ON or BUILD_BUG_ON_MSG because multiple BUILD_BUG_ON* with the same __LINE__ are not supported well.
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由 Paolo Bonzini 提交于
This was not printing the high parts of several 64-bit fields on 32-bit kernels. Separate from the previous one to make the patches easier to review. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
In theory this should have broken EPT on 32-bit kernels (due to reading the high part of natural-width field GUEST_CR3). Not sure if no one noticed or the processor behaves differently from the documentation. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Li RongQing 提交于
POSTED_INTR_NV is 16bit, should not use 64bit write function [ 5311.676074] vmwrite error: reg 3 value 0 (err 12) [ 5311.680001] CPU: 49 PID: 4240 Comm: qemu-system-i38 Tainted: G I 4.1.13-WR8.0.0.0_standard #1 [ 5311.689343] Hardware name: Intel Corporation S2600WT2/S2600WT2, BIOS SE5C610.86B.01.01.0008.021120151325 02/11/2015 [ 5311.699550] 00000000 00000000 e69a7e1c c1950de1 00000000 e69a7e38 fafcff45 fafebd24 [ 5311.706924] 00000003 00000000 0000000c b6a06dfa e69a7e40 fafcff79 e69a7eb0 fafd5f57 [ 5311.714296] e69a7ec0 c1080600 00000000 00000001 c0e18018 000001be 00000000 00000b43 [ 5311.721651] Call Trace: [ 5311.722942] [<c1950de1>] dump_stack+0x4b/0x75 [ 5311.726467] [<fafcff45>] vmwrite_error+0x35/0x40 [kvm_intel] [ 5311.731444] [<fafcff79>] vmcs_writel+0x29/0x30 [kvm_intel] [ 5311.736228] [<fafd5f57>] vmx_create_vcpu+0x337/0xb90 [kvm_intel] [ 5311.741600] [<c1080600>] ? dequeue_task_fair+0x2e0/0xf60 [ 5311.746197] [<faf3b9ca>] kvm_arch_vcpu_create+0x3a/0x70 [kvm] [ 5311.751278] [<faf29e9d>] kvm_vm_ioctl+0x14d/0x640 [kvm] [ 5311.755771] [<c1129d44>] ? free_pages_prepare+0x1a4/0x2d0 [ 5311.760455] [<c13e2842>] ? debug_smp_processor_id+0x12/0x20 [ 5311.765333] [<c10793be>] ? sched_move_task+0xbe/0x170 [ 5311.769621] [<c11752b3>] ? kmem_cache_free+0x213/0x230 [ 5311.774016] [<faf29d50>] ? kvm_set_memory_region+0x60/0x60 [kvm] [ 5311.779379] [<c1199fa2>] do_vfs_ioctl+0x2e2/0x500 [ 5311.783285] [<c11752b3>] ? kmem_cache_free+0x213/0x230 [ 5311.787677] [<c104dc73>] ? __mmdrop+0x63/0xd0 [ 5311.791196] [<c104dc73>] ? __mmdrop+0x63/0xd0 [ 5311.794712] [<c104dc73>] ? __mmdrop+0x63/0xd0 [ 5311.798234] [<c11a2ed7>] ? __fget+0x57/0x90 [ 5311.801559] [<c11a2f72>] ? __fget_light+0x22/0x50 [ 5311.805464] [<c119a240>] SyS_ioctl+0x80/0x90 [ 5311.808885] [<c1957d30>] sysenter_do_call+0x12/0x12 [ 5312.059280] kvm: zapping shadow pages for mmio generation wraparound [ 5313.678415] kvm [4231]: vcpu0 disabled perfctr wrmsr: 0xc2 data 0xffff [ 5313.726518] kvm [4231]: vcpu0 unhandled rdmsr: 0x570 Signed-off-by: NLi RongQing <roy.qing.li@gmail.com> Cc: Yang Zhang <yang.z.zhang@Intel.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
Per Hyper-V specification (and as required by Hyper-V-aware guests), SynIC provides 4 per-vCPU timers. Each timer is programmed via a pair of MSRs, and signals expiration by delivering a special format message to the configured SynIC message slot and triggering the corresponding synthetic interrupt. Note: as implemented by this patch, all periodic timers are "lazy" (i.e. if the vCPU wasn't scheduled for more than the timer period the timer events are lost), regardless of the corresponding configuration MSR. If deemed necessary, the "catch up" mode (the timer period is shortened until the timer catches up) will be implemented later. Changes v2: * Use remainder to calculate periodic timer expiration time Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
The SynIC message protocol mandates that the message slot is claimed by atomically setting message type to something other than HVMSG_NONE. If another message is to be delivered while the slot is still busy, message pending flag is asserted to indicate to the guest that the hypervisor wants to be notified when the slot is released. To make sure the protocol works regardless of where the message sources are (kernel or userspace), clear the pending flag on SINT ACK notification, and let the message sources compete for the slot again. Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
This helper will be used also in Hyper-V SynIC timers implementation. Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
This rearrangement places functions declarations together according to their functionality, so future additions will be simplier. Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
This struct is required for Hyper-V SynIC timers implementation inside KVM and for upcoming Hyper-V VMBus support by userspace(QEMU). So place it into Hyper-V UAPI header. Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
This struct is required for Hyper-V SynIC timers implementation inside KVM and for upcoming Hyper-V VMBus support by userspace(QEMU). So place it into Hyper-V UAPI header. Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> Acked-by: NK. Y. Srinivasan <kys@microsoft.com> Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
This constant is required for Hyper-V SynIC timers MSR's support by userspace(QEMU). Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> Acked-by: NK. Y. Srinivasan <kys@microsoft.com> Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Andrey Smetanin 提交于
enum hv_message_type inside struct hv_message, hv_post_message is not size portable. Replace enum by u32. Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
Merge tag 'kvm-s390-next-4.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390 features and fixes for 4.5 (kvm/next) Some small cleanups - use assignment instead of memcpy - use %pK for kernel pointers Changes regarding guest memory size - Fix an off-by-one error in our guest memory interface (we might use unnecessarily big page tables, e.g. 3 levels for a 2GB guest instead of 2 levels) - We now ask the machine about the max. supported guest address and limit accordingly.
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- 16 12月, 2015 3 次提交
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由 Guenther Hutzl 提交于
Verify that the guest maximum storage address is below the MHA (maximum host address) value allowed on the host. Acked-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: NGuenther Hutzl <hutzl@linux.vnet.ibm.com> Signed-off-by: NDominik Dingel <dingel@linux.vnet.ibm.com> [adopt to match recent limit,size changes] Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Dominik Dingel 提交于
While the userspace interface requests the maximum size the gmap code expects to get a maximum address. This error resulted in bigger page tables than necessary for some guest sizes, e.g. a 2GB guest used 3 levels instead of 2. At the same time we introduce KVM_S390_NO_MEM_LIMIT, which allows in a bright future that a guest spans the complete 64 bit address space. We also switch to TASK_MAX_SIZE for the initial memory size, this is a cosmetic change as the previous size also resulted in a 4 level pagetable creation. Reported-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NDominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Christian Borntraeger 提交于
The s390dbf and trace events provide a debugfs interface. If kptr_restrict is active, we should not expose kernel pointers. We can fence the debugfs output by using %pK instead of %p. Cc: Kees Cook <keescook@chromium.org> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 15 12月, 2015 1 次提交
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由 Christian Borntraeger 提交于
Replace two memcpy with proper assignment. Suggested-by: NPaolo Bonzini <pbonzini@redhat.com> Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 14 12月, 2015 10 次提交
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由 Marc Zyngier 提交于
As we've now switched to the new world switch implementation, remove the weak attributes, as nobody is supposed to override it anymore. Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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由 Marc Zyngier 提交于
As we've now rewritten most of our code-base in C, most of the KVM-specific code in asm-offset.c is useless. Delete-time again! Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
Having the system register numbers as #defines has been a pain since day one, as the ordering is pretty fragile, and moving things around leads to renumbering and epic conflict resolutions. Now that we're mostly acessing the sysreg file in C, an enum is a much better type to use, and we can clean things up a bit. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
This is it. We remove all of the code that has now been rewritten. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
In order to run C code in HYP, we must make sure that the kernel's RO section is mapped into HYP (otherwise things break badly). Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
So far, we've implemented the new world switch with a completely different namespace, so that we could have both implementation compiled in. Let's take things one step further by adding weak aliases that have the same names as the original implementation. The weak attributes allows the new implementation to be overriden by the old one, and everything still work. At a later point, we'll be able to simply drop the old code, and everything will hopefully keep working, thanks to the aliases we have just added. This also saves us repainting all the callers. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
Add the panic handler, together with the small bits of assembly code to call the kernel's panic implementation. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
Add the entry points for HYP mode (both for hypercalls and exception handling). Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
Implement the TLB handling as a direct translation of the assembly code version. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Marc Zyngier 提交于
Implement the fpsimd save restore, keeping the lazy part in assembler (as returning to C would be overkill). Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
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