Commit graph

53 commits

Author SHA1 Message Date
David Tolnay
c69f97542a error: Consistently use Display instead of error description()
The description method is deprecated and its signature forces less
helpful error messages than what Display can provide.

BUG=none
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu

Change-Id: I27fc99d59d0ef457c5273dc53e4c563ef439c2c0
Reviewed-on: https://chromium-review.googlesource.com/1497735
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2019-03-02 17:41:31 -08:00
Jianxun Zhang
96f2d8ebe2 linux: rename function of device creation
Rename functions and parameters that had 'virtio' in their names
because we also create non-virtio devices like audio.

BUG=none
TEST=emerge-eve crosvm and deploy it to the device, verify some of
devices are still created at /sys/bus/virtio/devices/

Change-Id: I3ea75159a865e5f00ecef349725b3c12f94afaca
Signed-off-by: Jianxun Zhang <jianxun.zhang@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/1480739
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2019-03-01 23:41:40 -08:00
Daniel Verkamp
e403f5ccd0 linux: add support for loading an initrd
Based on Linux boot protocol references:
- x86: Documentation/x86/boot.txt
- arm: Documentation/devicetree/bindings/chosen.txt

BUG=None
TEST=Boot Alpine Linux netboot initrd on x86_64 and aarch64

Change-Id: If4730765638f0a0b8bb8f63203c98e4765a354ee
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1407221
Tested-by: kokoro <noreply+kokoro@google.com>
2019-02-07 03:02:08 -08:00
Daniel Verkamp
e54b33834c x86_64: return fdt size from create_fdt()
This will allow placement of the initrd after the end of the device tree
blob in the next patch.

This also moves the load of the fdt into setup_system_memory() so that
the position of the initrd can be calculated (in the next patch) before
calling configure_system().

BUG=None
TEST=Boot Termina on x86-64

Change-Id: I6dcfce3aa48ae0932157a40fa28ea9fb384263c8
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1443634
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2019-02-07 03:02:08 -08:00
Miriam Zimmerman
26ac928925 Add logic to set up PIT (guarded by flag).
BUG=chromium:908689
TEST=None

Change-Id: I625bab235f740d1d2ae256de61a25d560025b751
Reviewed-on: https://chromium-review.googlesource.com/1444501
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Miriam Zimmerman <mutexlox@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2019-02-06 08:31:58 -08:00
Tristan Muntsinger
4133b0120d crosvm: x86_64 guest support for android device-tree
This device tree is derived from the Android fstab file which is
provided via command line flag.

BUG=chromium:922737
TEST=None
CQ-DEPEND=CL:1415390
CQ-DEPEND=CL:1415270

Change-Id: Idd007c844f84cab3ff37be16a718f14e5f630312
Reviewed-on: https://chromium-review.googlesource.com/1370058
Commit-Ready: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2019-01-28 14:17:10 -08:00
Zach Reizner
3ba0098d67 crosvm: add debug labels to devices for improved SIGCHLD logs
Each device (Bus, Pci, Proxy, etc), gets a debug label associated with
it. When a child is spawned, the debug label for it is stored in
a map with the child's pid as the key. If a SIGCHLD is handled, this map
is used to print a more helpful message about exactly which child died.

BUG=None
TEST=run with sandboxing and a faulty child device
     check logs for message about child died
     the child should have a debug label

Change-Id: I61fbbee0a8e701249533a7a3a6a1ad48840f12e5
Reviewed-on: https://chromium-review.googlesource.com/1432835
Commit-Ready: Chih-Yang Hsia <paulhsia@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
2019-01-26 00:59:57 -08:00
paulhsia
b6d842fa56 crosvm: Support cros-rust version crosvm ebuild
To support eclass migration for crosvm ebuild from crate to cros-rust.
This CL need to be built with cros-rust version crosvm ebuild.

- Upgrage crate cc from 1.0.15 to 1.0.25.
- Change local tempdir version from 0.3.5 to 0.3.7 for ebuild
integration.
- Remove 9s directory since it's moved to platform2.

BUG=chromium:781398
BUG=chromium:907520
TEST=Run $ FEATURES=test emerge-eve crosvm
     in a clean chroot
CQ-DEPEND=CL:1421303

Change-Id: Iab615b555a51f8020e5efae1cc40ac6b54ea87f2
Reviewed-on: https://chromium-review.googlesource.com/1421237
Commit-Ready: Chih-Yang Hsia <paulhsia@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Chih-Yang Hsia <paulhsia@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2019-01-22 16:53:13 -08:00
David Tolnay
2bac1e7a9c toolchain: Update to Rust 1.31.0
We updated the production toolchain from 1.30 to 1.31 in CL:1366446.
This CL does the same upgrade for the local developer toolchain and
Kokoro.

The relevant changes are in rust-toolchain and kokoro/Dockerfile.
The rest are from rustfmt.

TEST=cargo fmt --all -- --check
TEST=as described in kokoro/README.md

Change-Id: I3b4913f3e237baa36c664b4953be360c09efffd4
Reviewed-on: https://chromium-review.googlesource.com/1374376
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-12-13 19:28:04 -08:00
David Tolnay
1d4d44a8e2 sync: Mutex type with methods that panic instead of return error
This CL adds a crate `sync` containing a type sync::Mutex which wraps
the standard library Mutex and mirrors the same methods, except that
they panic where the standard library would return a PoisonError. This
API codifies our error handling strategy around poisoned mutexes in
crosvm.

- Crosvm releases are built with panic=abort so poisoning never occurs.
  A panic while a mutex is held (or ever) takes down the entire process.
  Thus we would like for code not to have to consider the possibility of
  poison.

- We could ask developers to always write `.lock().unwrap()` on a
  standard library mutex. However, we would like to stigmatize the use
  of unwrap. It is confusing to permit unwrap but only on mutex lock
  results. During code review it may not always be obvious whether a
  particular unwrap is unwrapping a mutex lock result or a different
  error that should be handled in a more principled way.

Developers should feel free to use sync::Mutex anywhere in crosvm that
they would otherwise be using std::sync::Mutex.

TEST=boot linux

Change-Id: I9727b6f8fee439edb4a8d52cf19d59acf04d990f
Reviewed-on: https://chromium-review.googlesource.com/1359923
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-12-05 01:13:41 -08:00
David Tolnay
5bbbf61082 lint: Resolve the easier clippy lints
Hopefully the changes are self-explanatory and uncontroversial. This
eliminates much of the noise from `cargo clippy` and, for my purposes,
gives me a reasonable way to use it as a tool when writing and reviewing
code.

Here is the Clippy invocation I was using:

    cargo +nightly clippy -- -W clippy::correctness -A renamed_and_removed_lints -Aclippy::{blacklisted_name,borrowed_box,cast_lossless,cast_ptr_alignment,enum_variant_names,identity_op,if_same_then_else,mut_from_ref,needless_pass_by_value,new_without_default,new_without_default_derive,or_fun_call,ptr_arg,should_implement_trait,single_match,too_many_arguments,trivially_copy_pass_by_ref,unreadable_literal,unsafe_vector_initialization,useless_transmute}

TEST=cargo check --features wl-dmabuf,gpu,usb-emulation
TEST=boot linux

Change-Id: I55eb1b4a72beb2f762480e3333a921909314a0a2
Reviewed-on: https://chromium-review.googlesource.com/1356911
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-12-03 20:32:03 -08:00
Daniel Verkamp
ac242df107 Revert "mptable: mark PCI interrupts as edge triggered"
Legacy PCI interrupts should be level triggered, not edge triggered.

The reverted change was done as part of a series of patches during
debugging of virtio-pci differences from virtio-mmio, but this was not
the actual root cause of the problems.

BUG=None
TEST=Boot crosvm on x86-64 and verify virtio devices still work

This reverts commit 9357ceab6a.

Change-Id: If1bf6e48d63fe352f0b914f5bdb2e346ab210369
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1297840
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-10-29 21:18:14 -07:00
Daniel Verkamp
8eceba31c0 devices: make PCI work in --disable-sandbox mode
Make the Minijail part of the PCI device tuple optional so that an empty
jail is not created for --disable-sandbox.

BUG=None
TEST=Boot crosvm in both --multiprocess and --disable-sandbox modes

Change-Id: Ibb3f2dbf33ca19910ee7448ea823b2772e09ecc5
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1290289
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-19 15:07:43 -07:00
Daniel Verkamp
56f283b297 Revert "Revert "linux: Convert all virtio devices to PCI""
This reverts commit c8986f14a8.

Re-land the virtio PCI conversion after the preceding fixes.

BUG=chromium:854766
TEST=Boot crosvm on nami and kevin

Change-Id: I3699e3ed1a45cecc99c51e352d0cf0c32bc4116f
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1265862
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-12 23:07:16 -07:00
Daniel Verkamp
9357ceab6a mptable: mark PCI interrupts as edge triggered
BUG=chromium:854766
TEST=Boot crosvm on an x86_64 platform (nami)

Change-Id: Id55975a443a54e8b9c25616cd842507c57802af0
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1265047
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-10 17:07:55 -07:00
Zach Reizner
55a9e504be cargo fmt all source code
Now that cargo fmt has landed, run it over everything at once to bring
rust source to the standard formatting.

TEST=cargo test
BUG=None

Change-Id: Ic95a48725e5a40dcbd33ba6d5aef2bd01e91865b
Reviewed-on: https://chromium-review.googlesource.com/1259287
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-10-09 21:14:05 -07:00
Daniel Verkamp
c8986f14a8 Revert "linux: Convert all virtio devices to PCI"
This reverts commit d635acbaf3.

This commit seems to be responsible for introducing hung tasks in tests,
so let's revert it for now to get the tests green and debug it offline.

BUG=chromium:891806
TEST=None

Change-Id: I83504058baeae00909d9fb4f4bb704a144a0dfaf
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1259408
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-04 00:37:22 -07:00
Daniel Verkamp
d635acbaf3 linux: Convert all virtio devices to PCI
Change the main create_virtio_devs() function to create virtio devices
using the PCI transport rather than MMIO.

BUG=chromium:854766
TEST=Boot crosvm and verify that all virtio devices still work

Change-Id: I9a6e60b21edea1e5ac2b3ae5c91793d45cf5063a
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1241541
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-02 09:17:25 -07:00
Daniel Verkamp
8102525958 x86_64: increase size of MMIO range
VirtioPci uses 0x4000 bytes of MMIO space per device, so the existing
allocation of 0x10000 was only enough for 4 devices; extend the MMIO
region to allow for more devices.

Change-Id: I0cc44edacc5f435510ab8ae9b38a925a0ee5d008
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1240654
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-01 11:30:04 -07:00
Daniel Verkamp
28a671a95f devices: pci: refactor config access mechanism
The current PciRoot is only workable for the legacy I/O port 0xCF8
access mechanism; factor out the config access mechanism part of PciRoot
into PciConfigIo so that we can add a MMIO-based access mechanism for
ARM.

Change-Id: I87756b0ab31070d8717c76d419957bf5ea5d75ad
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1241539
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-01 11:30:03 -07:00
Dylan Reid
9f2bbc8a91 devices: pci: fix registration of PCI IRQs
MPTABLE needs the PCI device number, not the IRQ; modify the information
passed via pci_irqs so that it contains a (device index, interrupt pin)
tuple.

Change-Id: Ia1dcb478cdab6654087925093ef9d1204edb21c9
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1237362
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-01 11:30:02 -07:00
Dylan Reid
aa12c74bff devices: pci: add ioeventfds to PciDevice trait
VirtioDevices and potentially others need to register ioeventfds that
will be triggered when guests write to certain addresses. Allow
PciDevices to return an array of ioeventfds that the VM can install.

Change-Id: I2524c4e8c04f75a8d7868cac998304aecbb29c40
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1237360
Commit-Ready: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: Daniel Verkamp <dverkamp@chromium.org>
2018-10-01 11:30:01 -07:00
Dylan Reid
0f579cb09c move pci root creation to arch
passing everything in to the pci code is getting annoying. Instead build
it up in arch which already has access to all the needed resources.
Change-Id: If42f994443c4f11152fca8da16f27fa4cd80580d
Reviewed-on: https://chromium-review.googlesource.com/1237357
Commit-Ready: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-10-01 11:29:59 -07:00
Dylan Reid
059a188d0d Arch: Big refactor and add an empty PCI bus
When setting up IO, accept an optional PciRoot device to put on the IO
bus.

For aarch64, it's currently ignored. For x86_64, it will be added at
0xcf8.

 break up mmio device creation and registration

Moving forward registration will be handled by the architecture specific
code. However, creation will be handled by the common code. To make that
easier split up the two steps so a list of devices is created, then each
is registered later.

Start moving to a model where the configuration generates a set of
components that are passed to the architecture. The architecture will
crate a VM from the components.

Break up the big run_config function and move architecture specific
parts to the various architectures.

This doesn't refactor the function calls each architecture makes, but
moves the setup flow in to the arch impls so that they can diverge in
the future.

Change-Id: I5b10d092896606796dc0c9afc5e34a1b288b867b
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1099860
Commit-Ready: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: Daniel Verkamp <dverkamp@chromium.org>
2018-09-10 17:17:35 -07:00
Dylan Reid
2dd78797d7 x86_64: Don't allocate addrs in the 32 bit gap
Device allocations have to skip the gap so they don't collide with
things like the APIC.

BUG=863490
TEST=Resize a gedit window on APL for a minute and make sure there isn't
a crash.

Change-Id: Ia8185bcdbb6c18e13d02be317ae4d48c73288661
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1168400
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-08-09 02:21:31 -07:00
Dylan Reid
625866b8bb x86_64: Enable pci on the command line.
Change-Id: I73f77dfbd1d76ed94e6ae9645fa7c0a6fab0337a
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1085250
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
2018-07-31 12:07:31 -07:00
Dylan Reid
a697d31fc6 mptable: Add ability to allocate pci interrupts
PCI devices will require interrupts, allow this by passing a vector of
IRQs to the mptable so the guest kernel can find the IRQs.

Change-Id: I9fa8a2ed0a34089e631441570521082ffde9c4ef
Reviewed-on: https://chromium-review.googlesource.com/1072578
Commit-Ready: Dylan Reid <dgreid@chromium.org>
Tested-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-07-23 21:05:03 -07:00
Dylan Reid
836466aead devices: proxy - Add support for proxying PciDevices
PCI adds a configuration space to the existing memory mapped IO
supported by BusDevices.

Add the ability to set configuration space as optional to the BusDevice
trait so that ProxyDevice can be shared.

PCI devices can have more than one memory mapped region. Expand the bus
so that it has the ability to pass an absolute address instead of an
offset. This will allow the PCI device to know which BAR is being
written to.

Change-Id: I055cd516c49a74316a9547df471290f05d865b0a
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1103663
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
2018-07-18 21:59:01 -07:00
Dylan Reid
228e4a6a91 Move gpu allocator to resources
Combine GPU buffer allocation with the system resource allocator making
life easier as only one allocator needs to get passed to the execute
function.

Change-Id: I199eb0fd6b99b629aaec1ae3295e8a1942da5309
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1099856
2018-07-09 17:59:23 -07:00
Slava Malyugin
ac5a8dbe50 x86_64: fill cache info in cpuid, stop spoofing CPU vendor id
The fix passes through cache-related CPU entries 2, 4, 0x80000005
and 0x80000006 similar to how QEMU does it.

Note passing this cpuid info itself is not sufficient unless
CPU vendor is something Linux kernel recognizes. Therefore, I am
removing cute spoofing of the vendor id, allowing host value to
pass through.

I believe it is generally a bad idea to spoof vendor id as lots of
kernel and user space code gets confused and may take unoptimized paths.
The corollary is that removing the spoofing may have unintended
consequences correctness- and performance-wise. I would appreciate
recommendation on additional testing.

BUG=chromium:859678
TEST=lscpu in Guest, 'cargo test'

Change-Id: I6963b00d9eecf49fb4578bcc75ad744c3099f045
Reviewed-on: https://chromium-review.googlesource.com/1125529
Commit-Ready: Slava Malyugin <slavamn@chromium.org>
Tested-by: Slava Malyugin <slavamn@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-07-09 12:42:42 -07:00
Dylan Reid
ef7352f208 Remove the device manager and use the new resource allocator
Allow IRQs to be assigned before creating device manager.

For PCI, we need to add devices with interrupts before MMIO setup. Add
the ability to tell the architecture device manager about IRQs that we
have stolen.

There was only one function in device_manager and all of its state is
now delegated to the resource allocator, remove it.

Change-Id: I9afa0e3081a20cb024551ef18ae34fe76a1ef39d
Reviewed-on: https://chromium-review.googlesource.com/1089720
Commit-Ready: Dylan Reid <dgreid@chromium.org>
Tested-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
2018-06-29 17:50:17 -07:00
Sonny Rao
a7fae252b0 crosvm: aarch64: get kernel's preferred target type for vcpus
This fixes an issue on kevin where if we start on a little core, the
kernel doesn't like the generic ARMv8 target cpu type for some reason.  To
fix this we must query the preferred type from the vm device first and
supply that to the vcpu init ioctl.

We need to change the signature of the configure_vcpu method to pass
in the vm object even though we aren't using it on x86.

BUG=chromium:797868
TEST=./build_test passes on all architectures
TEST=crosvm runs on kevin

Change-Id: I460cb9db62a8805bb88f838956aa4f1c69183961
Reviewed-on: https://chromium-review.googlesource.com/982996
Commit-Ready: Sonny Rao <sonnyrao@chromium.org>
Tested-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-04-03 12:50:39 -07:00
Dylan Reid
45753529ba x86_64: Set EFER.LMA
We were setting LME (Long Mode Enabled) but not LMA (Long Mode Active).
New kernels have a check in the kvm code that disallows this brokenness.

Change-Id: Ic8950c8748ead81201223c19404fdd2c8d80f7dc
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/985733
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-29 17:02:43 -07:00
Mike Frysinger
064696f4fa x86_64: use project name in cpuid vendor
The official name is "crosvm", not "CrOSVM".

BUG=None
TEST=None

Change-Id: I21f200d8224c9a8fee53011a63ff4ad165128904
Reviewed-on: https://chromium-review.googlesource.com/976941
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
2018-03-22 20:53:31 -07:00
Dylan Reid
1776c645c9 x86_64: Add separate error for getting sregs
Re-using the set error could cause confusion.

BUG=none
TEST=none

Change-Id: I47445b28946484028bf96cff9ee0bc8c89b6f3e5
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/974741
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-22 18:16:57 -07:00
Mike Frysinger
63be8cb9d3 x86_64: improve documentation for cpuid vendor
BUG=None
TEST=None

Change-Id: Id274c361d10be00d5d7279765a2e90ad5ecb4112
Reviewed-on: https://chromium-review.googlesource.com/974314
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-21 20:48:40 -07:00
Sonny Rao
ed517d1bfe crosvm: create a LinuxArch trait and use it for x86
This creates a trait that different architectures can implement to
support running Linux VMs.

In the implementation on X86 we remove some error and return errors
from lower-level modules as appropriate.  These modules now implement
the Error trait so we can get meaningful descriptions without an extra
error from the calling function. This still keeps all the ifdefs in
linux.rs for now until we have another implementation to use for ARM.

BUG=chromium:797868
TEST=./build_test passes on all architectures
TEST=crosvm runs on caroline

Change-Id: If24bcc83e25f9127d6aea68f9272e639296aad8b
Reviewed-on: https://chromium-review.googlesource.com/952368
Commit-Ready: Sonny Rao <sonnyrao@chromium.org>
Tested-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-15 17:58:33 -07:00
Sonny Rao
8f73ccc45d x86_64: implement error trait
This is useful for describing errors that we pass up.

BUG=chromium:797868
TEST=build_tests passes on all architectures
TEST=crosvm runs on caroline

Change-Id: Ied456015e74830d3f1f465fca1151682c9148eb5
Reviewed-on: https://chromium-review.googlesource.com/961603
Commit-Ready: Sonny Rao <sonnyrao@chromium.org>
Tested-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-14 11:55:56 -07:00
Sonny Rao
43724a239b crosvm: move x86_64 arch specific stuff into the x86_64 crate
This is in preparation to make different architectures implement a
trait, but for now it's just moving code out of linux.rs and into
x86_64 trait.  A few new functions were required which will become
part of the trait interface.  There's still a lot of ugly ifdefs
everywhere that should go away in subsequent CLs.

BUG=chromium:797868
TEST=./build_test
TEST=run crosvm on caroline

Change-Id: Ifc95d4eb84f64ebacb4481a172524d94dc96b7bb
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/942084
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-02 22:22:29 -08:00
Sonny Rao
1aa03e00a0 x86_64: implement error trait for sub-modules in x86_64 crate
Implement the std::error::Error Trait for Error types within the
x86_64 crate.  We will make use of these implementations later on when
we are using the architecture Trait to pass architecture-specific
errors up with meaningful descriptions.

BUG=chromium:797868
TEST=./build_test passes on all architectures
TEST=crosvm runs on caroline

Change-Id: I7a30db69437990608e3a0f5e6e3a200ef6c2d0c3
Reviewed-on: https://chromium-review.googlesource.com/932976
Commit-Ready: Sonny Rao <sonnyrao@chromium.org>
Tested-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
2018-02-27 22:26:07 -08:00
Dmitry Torokhov
cda18d757b kvm: do not pass max number of cpuid entries in get_supported_cpuid()
It does not make sense to have users of the API limit number of cpuid
entries retrieved. Just have KVM select reasonable upper limit and
return the true number.

TEST=cargo test --features plugin; cargo test -p kvm
BUG=chromium:800626

Change-Id: I8ab7e8d901bc408d17c23bfe798d89f921488673
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/933242
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-02-27 17:33:20 -08:00
Slava Malyugin
4567a281a5 crosvm: disable reliance on support of 1GB pages
The initalization code in crosvm used two-level page table
    in long mode, with last entry covering 1GB. This assumed
    presence of 1GB pages support ('pdpe1gb' in /proc/cpuinfo).
    Some CPUs don't have it.

    BUG=none
    TEST=reproduced bug on Celeron N3150 (Braswell), verified
         VM boots on it with fix

Change-Id: I6014c7ea236d8daf95e9f09b68beb7935a267aa3
Reviewed-on: https://chromium-review.googlesource.com/936323
Commit-Ready: Slava Malyugin <slavamn@chromium.org>
Tested-by: Slava Malyugin <slavamn@chromium.org>
Reviewed-by: Slava Malyugin <slavamn@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-02-26 22:07:23 -08:00
Sonny Rao
29cd40a1d6 crosvm: change GuestAddress to always be a u64
We want to be able to run 64-bit ARM kernels using a 32-bit version of
crosvm, to make it more consistent use a u64 to represent
GuestAddress.

BUG=chromium:797868
TEST=./build_test passes on all architectures
TEST=crosvm runs on caroline

Change-Id: I43bf993592caf46891e3e5e05258ab70b6bf3045
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/896398
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-02-01 18:08:55 -08:00
Dylan Reid
fedb675ed5 x85: mptable: Move the mptable to the end of base RAM
Recent Linux kernel's fail to start if the mptable is at the start of
RAM (address 0x00). Avoid putting the mptable there so that crosvm can
boot 4.14+ kernels. The kernel scans the last kilobyte of RAM after the
first, move the mptable there.

Change-Id: Ia00f49e7a4cbd0fb3719c21b757e8fdca65584e8
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/780045
2017-11-21 15:58:40 -08:00
Dylan Reid
5327d059a2 mptable: Fix range check and unit tests
The table grew with the addition of the 16 mpc_intsrc structures.
Correct the `compute_mp_size` function, the end check, and add a unit
test for the not having enough memory.

Change-Id: I1ff268629a47a422f50aefef9d6aa95121b94d59
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/777710
Reviewed-by: Slava Malyugin <slavamn@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2017-11-17 20:18:24 -08:00
Slava Malyugin
15ac873218 crosvm: fix MPTable, enable apic
The mptable inherited from kvmtool had some missing pieces. On top of that,
crosvm does not use KVM_SET_GSI_ROUTING. The addresses makes mptable match
the default routing in host kernel and removes "noapic".

TEST=cargo build (--release). tatl boot tested on 4.4.0 and 4.4.9

Change-Id: Ibc55abf245cd9d8fca601da204d5a189321c09c7
Reviewed-on: https://chromium-review.googlesource.com/772820
Commit-Ready: Slava Malyugin <slavamn@google.com>
Tested-by: Slava Malyugin <slavamn@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2017-11-15 20:21:05 -08:00
Dylan Reid
70a8290514 Fix new warning with rust 1.21
Mutable references being declared mutable themselves is unnecessary and
now generates a warning.

Change-Id: I29c7652fb86e17a8eda21efc728dd09b726c304f
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/717733
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2017-10-13 14:45:07 -07:00
Dylan Reid
0584fe9fb2 Limit types that can be read from guest memory
Not all types are safe to read from guest memory.  Any type with a
reference or pointer will be initialized to random bits that don't refer
to a valid address.  This can cause dangling pointer and general
unsafe behavior.

To fix this, limit types that can be read with read_obj to those that
implement the unsafe trait `DataInit`.  Provide implementations of
`DataInit` for intrinsic types that are obviously safe to initialize
with random data.

Implement the needed traits for bootparam types as they are read from
the kernel image directly.

Change-Id: I1040f5bc1b2fc4c58c87d8a2ce3f618edcf6f9b1
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/540750
Reviewed-by: Zach Reizner <zachr@chromium.org>
2017-06-27 00:20:33 -07:00
Dylan Reid
b2ae5fabd3 x86_64: Remove extra closure args and double-derefs
A few places were passing a reference to a reference, which just gets
compiled out anyways.

Some other places where passing `|e| ErrorName(e)` as a closure when
just `ErrorName` would be more succinct.

Change-Id: Ic097a81b956ef82b29fc1a15196c245bee61c251
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/510782
Reviewed-by: Zach Reizner <zachr@chromium.org>
2017-05-29 21:49:05 -07:00
Zach Reizner
664bbcb970 x86_64: add multi-cpu setup support
This change includes support for setting up the Intel MP Spec v1.4 table
necessary for emulating multiprocessor x86 systems.

BUG=None
TEST=cargo test

Change-Id: I02ffce49dc9eecfc98f56e5bc6ac009b3e680e27
Reviewed-on: https://chromium-review.googlesource.com/514349
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Tested-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2017-05-25 22:51:15 -07:00