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2020-03-03platform/ptrace: don't call probeSeccomp on arm64Andrei Vagin
The support of PTRACE_SYSEMU on arm64 was added in the 5.3 kernel, so we can be sure that the current version is higher that 5.3. And this change moves vsyscall seccomp rules to the arch specific file, because vsyscall isn't supported on arm64. PiperOrigin-RevId: 298696493
2020-02-28pcids.go isn't arch-specificAndrei Vagin
Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-02-26Merge pull request #1912 from lubinszARM:pr_kvm_buildgVisor bot
PiperOrigin-RevId: 297492004
2020-02-25Merge pull request #1271 from lubinszARM:pr_ring0_1gVisor bot
PiperOrigin-RevId: 297230721
2020-02-25Don't acquire contended lock with the OS thread locked.Adin Scannell
Fixes #1049 PiperOrigin-RevId: 297175164
2020-02-20Code Clean:Move getUserRegisters into dieArchSetup() and other small changes.Bin Lu
Consistent with QEMU, getUserRegisters() should be an arch-specific function. So, it should be called in dieArchSetup(). With this patch and the pagetable/pcid patch, the kvm modules on Arm64 can be built successfully. Signed-off-by: Bin Lu <bin.lu@arm.com>
2020-02-18ring0/pagetables: fix typogVisor bot
PiperOrigin-RevId: 295770717
2020-02-14passed the kvm test case of "TestKernelSyscall" on Arm64Bin Lu
For kvm test case "TestKernelSyscall", redpill/syscall(-1) in guest kernel level will be trapped in el1_svc. And in el1_svc, we use mmio_exit to leave the guest. Signed-off-by: Bin Lu <bin.lu@arm.com>
2020-01-29supporting sError in guest kernel on Arm64Bin Lu
For test case 'TestBounce', we use KVM_SET_VCPU_EVENTS to trigger sError to leave guest. Signed-off-by: Bin Lu <bin.lu@arm.com>
2020-01-27Update package locations.Adin Scannell
Because the abi will depend on the core types for marshalling (usermem, context, safemem, safecopy), these need to be flattened from the sentry directory. These packages contain no sentry-specific details. PiperOrigin-RevId: 291811289
2020-01-27Fix licenses.Adin Scannell
The preferred Copyright holder is "The gVisor Authors". PiperOrigin-RevId: 291786657
2020-01-27Standardize on tools directory.Adin Scannell
PiperOrigin-RevId: 291745021
2020-01-23Check for EINTR from KVM_CREATE_VMMichael Pratt
The kernel may return EINTR from: kvm_create_vm kvm_init_mmu_notifier mmu_notifier_register do_mmu_notifier_register mm_take_all_locks Go 1.14's preemptive scheduling signals make hitting this much more likely. PiperOrigin-RevId: 291212669
2020-01-21Merge pull request #1275 from lubinszARM:pr_ring0_5gVisor bot
PiperOrigin-RevId: 290839263
2020-01-21Merge pull request #1274 from lubinszARM:pr_ring0_4gVisor bot
PiperOrigin-RevId: 290811598
2020-01-16Merge pull request #1272 from lubinszARM:pr_ring0_2gVisor bot
PiperOrigin-RevId: 290113719
2020-01-15Merge pull request #1540 from laijs:fix-PCIDsgVisor bot
PiperOrigin-RevId: 289925133
2020-01-09New sync package.Ian Gudger
* Rename syncutil to sync. * Add aliases to sync types. * Replace existing usage of standard library sync package. This will make it easier to swap out synchronization primitives. For example, this will allow us to use primitives from github.com/sasha-s/go-deadlock to check for lock ordering violations. Updates #1472 PiperOrigin-RevId: 289033387
2020-01-09Avoid panic when c.PCIDs is nilLai Jiangshan
When PCID is disabled, there would throw a panic when dropPageTables() access to c.PCID without check. Signed-off-by: Lai Jiangshan <eag0628@gmail.com>
2020-01-08Merge pull request #1273 from lubinszARM:pr_ring_3gVisor bot
PiperOrigin-RevId: 288743614
2020-01-06platform/syscall: use syscall + int3 to execute a system call in a stub processAndrei Vagin
Right now, we need to call ptrace(PTRACE_SYSCALL) and wait() twice to execute one system call in a stub process. With these changes, we will need to call ptrace + wait only once. In addition, this allows to workaround the kernel bug when a stub process doesn't stop on syscall-exit-stop and starts executing the next system call. Reported-by: syzbot+37143cafa8dc3b5008ee@syzkaller.appspotmail.com PiperOrigin-RevId: 288393029
2019-12-26Merge pull request #1461 from xiaobo55x:ptrace_sysemugVisor bot
PiperOrigin-RevId: 287225250
2019-12-26Merge pull request #1460 from lubinszARM:pr_clean_code1gVisor bot
PiperOrigin-RevId: 287221280
2019-12-24slight changes to ring0&pagetables for Arm64Bin Lu
There are 2 jobs have been finished in this patch: 1, a comment was added to explain the purpose of the extra NOPs in Vectors(). 2, some merge errors were fixed. Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-12-23Replace syscall.PTRACE_SYSEMU with unix.PTRACE_SYSEMUHaibo Xu
Linux PTRACE_SYSEMU support on arm64 was merged to mainline from V5.3, and the corresponding support in go also enabled recently. Since the "syscall" package is locked down from go 1.4, so the ptrace PTRACE_SYSEMU definition can't be added to package "syscall" on arm64. According to the golang community, updates required by new systems or versions should use the corresponding package in the golang.org/x/sys repository instead(https://golang.org/pkg/syscall/). Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I2f917bb2be62f990c3e158e2bb99e094ea03f751
2019-12-18Merge pull request #890 from lubinszARM:pr_phyapgVisor bot
PiperOrigin-RevId: 286299056
2019-12-18Merge pull request #1322 from lubinszARM:pr_vfp_ring0gVisor bot
PiperOrigin-RevId: 286259750
2019-12-18supporting lazy-fpsimd in guest on Arm64Bin Lu
Several jobs were finished in this patch: 1, provide functions to get/set fpcr/fpsr/vregs 2, support lazy-fpsimd-context-switch in el1 Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-12-17Mark enableCpuidFault nosplitMichael Pratt
This is called after fork, so it must be nosplit. Updates #1408 PiperOrigin-RevId: 286053054
2019-12-17Merge pull request #1321 from lubinszARM:pr_testutils_vfpgVisor bot
PiperOrigin-RevId: 286042427
2019-12-13enable kvm to support arm64lubinszARM
There are 4 jobs were finished in this package: 1, Virtual machine initialization. 2, Bluepill implementation. 3, Move ring0.Vectors() into the address with 11-bits alignment. 4, Basic support for "SwitchToUser". Signed-off-by: Bin Lu <bin.lu@arm.com> COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/919 from lubinszARM:pr_kvm eedea52db451bf62722759009a9f14c54a69c55f PiperOrigin-RevId: 285501256
2019-12-04Add a floating test case for Arm64Bin Lu
Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-12-03platform/ptrace: make some operations arch specificHaibo Xu
Make the patchSignalInfo/cpuid faulting/initial thread seccomp rules operations architecture dependent. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: Iaf692dbe3700d2e01168ec2f1b4beeda9136fd62
2019-11-26passed the kvm test case of "TestApplicationFault" on Arm64 platformBin Lu
For test case "TestApplicationFault", Memory-fault in guest user level will be trapped in el0_da. And in el0_da, we use mmio_exit to leave the KVM guest. Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-11-26passed the kvm test case of "TestApplicationSyscall" on Arm64 platformBin Lu
For test case "TestApplicationSyscall", Syscall in guest user level will be trapped in el0_svc. And in el0_svc, we use mmio_exit to leave the KVM guest for now. Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-11-26Prepare the vcpu environment for a container applicationBin Lu
Mainly 2 jobs were finished in this patch: 1, context switching for a container application: a, R0-R30 b, pc\pstate\sp_el0 c, pagetable_el0 for container application This job can help us to pass the following test cases: "TestApplicationSyscall", "TestApplicationFault" 2, checking pagetable_el0 is empty This job can help us to pass the following test case: "TestInvalidate" Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-11-26passed the kvm test case of "TestKernelFault" on Arm64 platformBin Lu
Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-11-22enable ring0/pagetables to support arm64lubinszARM
Signed-off-by: Bin Lu <bin.lu@arm.com> COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/891 from lubinszARM:pr_pagetable 2385de75a8662af3ab1ae289dd74dd0e5dcfaf66 PiperOrigin-RevId: 282013224
2019-11-18platform/ptrace: use host.GetCPU instead of the getcpu syscallAndrei Vagin
This should save ~200ns from switchToApp (on ptrace too). // mpratt PiperOrigin-RevId: 281159895
2019-11-11Merge pull request #918 from lubinszARM:pr_ring0gVisor bot
PiperOrigin-RevId: 279840214
2019-10-31platform/kvm: calll sigtimedwait with zero timeoutAndrei Vagin
sigtimedwait is used to check pending signals and it should not block. PiperOrigin-RevId: 277777269
2019-10-30support using KVM_MEM_READONLY for arm64 regionslubinszARM
On Arm platform, "setMemoryRegion" has extra permission checks. In virt/kvm/arm/mmu.c: kvm_arch_prepare_memory_region() .... if (writable && !(vma->vm_flags & VM_WRITE)) { ret = -EPERM; break; } .... So, for Arm platform, the "flags" for kvm_memory_region is required. And on x86 platform, the "flags" can be always set as '0'. Signed-off-by: Bin Lu <bin.lu@arm.com> COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/810 from lubinszARM:pr_setregion 8c99b19cfb0c859c6630a1cfff951db65fcf87ac PiperOrigin-RevId: 277602603
2019-10-29Update build tags to allow Go 1.14Michael Pratt
Currently there are no ABI changes. We should check again closer to release. PiperOrigin-RevId: 277349744
2019-10-25platform/ptrace: use tgkill instead of killAndrei Vagin
The syscall filters don't allow kill, just tgkill. PiperOrigin-RevId: 276718421
2019-10-23Optimize kvm/physical_map.go on Arm platformBin Lu
Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-10-22platform/ptrace: exit without panic if a stub process has been killed by SIGKILLAndrei Vagin
SIGKILL can be sent only by an user or OOM-killer. In both cases, we don't need to panic. PiperOrigin-RevId: 276150120
2019-10-22enable ring0 to support arm64Bin Lu
This patch enabled the basic framework for arm64 guest. Serveral jobs were finished in this patch: 1, ring0.Vectors() 2, switchToUser() 3, basic framwork for Arm64 guest. Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-10-16Reorder BUILD license and load functions in gvisor.Kevin Krakauer
PiperOrigin-RevId: 275139066
2019-10-09Merge pull request #811 from lubinszARM:pr_testutilgVisor bot
PiperOrigin-RevId: 273781641
2019-09-24gvisor: change syscall.RawSyscall to syscall.RawSyscall6 where requiredgVisor bot
Before https://golang.org/cl/173160 syscall.RawSyscall would zero out the last three register arguments to the system call. That no longer happens. For system calls that take more than three arguments, use RawSyscall6 to ensure that we pass zero, not random data, for the additional arguments. PiperOrigin-RevId: 271062527
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