Age | Commit message (Collapse) | Author |
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Our "Preconditions:" blocks are very useful to determine the input invariants,
but they are bit inconsistent throughout the codebase, which makes them harder
to read (particularly cases with 5+ conditions in a single paragraph).
I've reformatted all of the cases to fit in simple rules:
1. Cases with a single condition are placed on a single line.
2. Cases with multiple conditions are placed in a bulleted list.
This format has been added to the style guide.
I've also mentioned "Postconditions:", though those are much less frequently
used, and all uses already match this style.
PiperOrigin-RevId: 327687465
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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It indicates that the Sentry has changed the state of the thread and
next calls of PullFullState() has to do nothing.
PiperOrigin-RevId: 325567415
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PiperOrigin-RevId: 325546308
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PiperOrigin-RevId: 324748508
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PiperOrigin-RevId: 324309862
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PiperOrigin-RevId: 324127810
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PiperOrigin-RevId: 324125938
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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I disabled DAIF(DEBUG, sError, IRQ, FIQ) in guest kernel mode,
and enabled them in guest user mode.
So, I can make sure all DAIF-s come from guest user mode,
and then the case 'TestBounceStress' can passed on Arm64.
Test steps:
1, cd pkg/sentry/platform/kvm
2, bazel test kvm_test --strip=never --test_output=streamed
Signed-off-by: Bin Lu <bin.lu@arm.com>
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full context switch: add fpsimd load/store support to container
application.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 323456118
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PiperOrigin-RevId: 323455097
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The subsequent systrap changes will need to import memmap from
the platform package.
PiperOrigin-RevId: 323409486
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We need to correctly distinguish instruction_abort/data_abort for
mem_abort@Arm64.
So, EC/WNR/FSC in esr_el1 should be checked.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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At present, when doing syscall_kvm test, we need to
enable the function of ESR_ELx_SYS64_ISS_SYS_CNTVCT/ESR_ELx_SYS64_ISS_SYS_CNTFRQ to
successfully pass the test.
I set CNTKCTL_EL1.EL0VCTEN==1/CNTKCTL_EL1.EL0PCTEN==1, so that the related cases can passed.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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This patch load/save TLS for the container application.
Related issue: full context-switch supporting for Arm64 #1238
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/2761 from lubinszARM:pr_tls_2 cb5dbca1c9c3f378002406da7a58887f9b5032b3
PiperOrigin-RevId: 322887044
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Support the operation of asid, so that I can optimize tlb performance
by combining with nG.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 321060717
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Split the kvm ut test cases to pass unit-tests on Arm64.
I will add the tls and full-context test cases for Arm64 later.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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At present, when doing syscall_kvm test, we need to
enable the function of ESR_ELx_SYS64_ISS_SYS_CTR_READ to
successfully pass the test.
I set SCTLR_EL1.UCT==1, so that the related cases can passed.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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There are 3 types of asynchronous exceptions on Arm64: sError, IRQ, FIQ.
In this case, we use the sError injection method in bluepillHandler to force the guest to quit.
So that the test case of "TestBounce" can be passed on Arm64.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 315812219
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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This analysis also catches a potential bug, which is a split on mapPhysical.
This would have led to potential guest-exit during Mapping (although this
would have been handled by the now-unecessary retryInGuest loop).
PiperOrigin-RevId: 315025106
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PiperOrigin-RevId: 314186752
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None of the dependencies have changed in 1.15. It may be possible to simplify
some of the wrappers in rawfile following 1.13, but that can come in a later
change.
PiperOrigin-RevId: 313863264
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On amd64, it uses 'HLT' to leave the guest.
Unlike amd64, arm64 can only uses mmio_exit/psci to leave the guest.
So, I designed the HYPERCALL_VMEXIT to be compatible with amd64/arm64.
To keep it simple, I used the address of exception table as the
MMIO base address, so that I can trigger a MMIO-EXIT by forcibly writing this space.
Then, in host user space, I can calculate this address to find out
which hypercall.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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It's a workaround to treat PROT_NONE as RDONLY temporarily.
TODO(gvisor.dev/issue/2686): PROT_NONE should be specially treated.
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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PiperOrigin-RevId: 308472331
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PiperOrigin-RevId: 308347744
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PiperOrigin-RevId: 307941984
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PiperOrigin-RevId: 307166482
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PiperOrigin-RevId: 306300032
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Minimize the use of unsafe.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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X86 provide 12 bits for PCID while arm64 support
8/16 bits ASID.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I0bd9236e44e6b6c4c88eb6e9adc5ac27b918bf6c
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PiperOrigin-RevId: 304221302
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The build tag for 32-bit x86 is 386, not i386.
Updates #2298
PiperOrigin-RevId: 304206373
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In the case of other signals (preemption), inject a normal bounce and
defer the signal until the vCPU has been returned from guest mode.
PiperOrigin-RevId: 303799678
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PiperOrigin-RevId: 303105826
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This fixes a compile time error:
pkg/sentry/platform/kvm/bluepill_arm64_unsafe.go:45:35: undefined: unsafe
PiperOrigin-RevId: 300375687
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Linux use the task.thread.uw.tp_value field to store the
TLS pointer on arm64 platform, and we use a similar way
in gvisor to store it in the arch/State struct.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: Ie76b5c6d109bc27ccfd594008a96753806db7764
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PiperOrigin-RevId: 299405855
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PiperOrigin-RevId: 299405663
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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
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Signed-off-by: Andrei Vagin <avagin@gmail.com>
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 297492004
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