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PiperOrigin-RevId: 290839263
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PiperOrigin-RevId: 290811598
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PiperOrigin-RevId: 290113719
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PiperOrigin-RevId: 289925133
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* 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
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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>
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PiperOrigin-RevId: 288743614
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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
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PiperOrigin-RevId: 287225250
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PiperOrigin-RevId: 287221280
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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>
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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
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PiperOrigin-RevId: 286299056
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PiperOrigin-RevId: 286259750
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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>
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This is called after fork, so it must be nosplit.
Updates #1408
PiperOrigin-RevId: 286053054
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PiperOrigin-RevId: 286042427
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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
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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Make the patchSignalInfo/cpuid faulting/initial thread seccomp rules
operations architecture dependent.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: Iaf692dbe3700d2e01168ec2f1b4beeda9136fd62
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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>
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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>
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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>
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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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
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This should save ~200ns from switchToApp (on ptrace too). // mpratt
PiperOrigin-RevId: 281159895
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PiperOrigin-RevId: 279840214
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sigtimedwait is used to check pending signals and
it should not block.
PiperOrigin-RevId: 277777269
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