[siemens/jailhouse] 0254c6: x86: Bring host CR4 into well-defined state during...

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Branch: refs/heads/next
Home: https://github.com/siemens/jailhouse
Commit: 0254c6cec7a8f6212848b118a6aeb60d8d4eccb4
https://github.com/siemens/jailhouse/commit/0254c6cec7a8f6212848b118a6aeb60d8d4eccb4
Author: Jan Kiszka <jan.k...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M hypervisor/arch/x86/include/asm/percpu.h
M hypervisor/arch/x86/include/asm/vcpu.h
M hypervisor/arch/x86/setup.c
M hypervisor/arch/x86/svm.c
M hypervisor/arch/x86/vmx.c

Log Message:
-----------
x86: Bring host CR4 into well-defined state during setup

Analogously to CR0: Avoid any uncertainty about the state of CR4 left
behind by Linux: check for unexpectedly set reserved bits or required-1
bits, and otherwise set our own state.

A side effect of this change is the VMX's vcpu_exit will no longer clear
VMXE in CR4 but only in the cached Linux state that arch_cpu_restore
will write back.

CC: Valentine Sinitsyn <valentine...@gmail.com>
Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Commit: a89ecf17df8b0bb9281c47bc1a40a3030dee5835
https://github.com/siemens/jailhouse/commit/a89ecf17df8b0bb9281c47bc1a40a3030dee5835
Author: Jan Kiszka <jan.k...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M hypervisor/include/jailhouse/printk.h

Log Message:
-----------
core: Introduce error return code tracing

A number of errors that can be reported during setup or while
reconfiguring cells are hard to trace down to their detailed reasons
because of the limited number of error codes available through POSIX.
This Introduces a non-invasive mechanism to instrument error return
paths in the hypervisor and report the origin of a specific error code
in the form

hypervisor/arch/x86/vmx.c:592: returning error -ENODEV

This can then be matched against the source code to find out which check
on the hardware, the system state or the configuration data failed
precisely.

The feature is off by default, requiring CONFIG_TRACE_ERROR to be set in
config.h.

Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Commit: 55400dafb2753bc7a1829c795cdb7a4c07136bdd
https://github.com/siemens/jailhouse/commit/55400dafb2753bc7a1829c795cdb7a4c07136bdd
Author: Jan Kiszka <jan.k...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M hypervisor/control.c
M hypervisor/paging.c
M hypervisor/pci.c
M hypervisor/pci_ivshmem.c

Log Message:
-----------
core: Instrument relevant return paths for error tracing

This instruments return paths so that the origin of important errors can
be tracked down. Two so far explicit error outputs are replaced with
trace_error.

We do not instrument -ENOMEM cases unless they relate to allocations
from the remapping pool. All other -ENOMEM cases boil down to a too
small hypervisor region.

Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Commit: 2029c09ee7f21937986f3a05725a1341bfb7c27c
https://github.com/siemens/jailhouse/commit/2029c09ee7f21937986f3a05725a1341bfb7c27c
Author: Jan Kiszka <jan.k...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M hypervisor/arch/x86/apic.c
M hypervisor/arch/x86/ioapic.c
M hypervisor/arch/x86/svm.c
M hypervisor/arch/x86/vcpu.c
M hypervisor/arch/x86/vmx.c
M hypervisor/arch/x86/vtd.c

Log Message:
-----------
x86: Instrument relevant return paths for error tracing

Add trace_error to return paths so that the origin of important errors
can be tracked down.

CC: Valentine Sinitsyn <valentine...@gmail.com>
Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Commit: e61898c87f0b275c1e617856805bd96d2c0aa994
https://github.com/siemens/jailhouse/commit/e61898c87f0b275c1e617856805bd96d2c0aa994
Author: Jan Kiszka <jan.k...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M hypervisor/paging.c

Log Message:
-----------
core: Simplify error reporting of paging_init

If -ENOMEM shows up at the user, this always means we ran out of pages.

Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Commit: 68657bf459d72e944eb9a5bbd5c3b71736d21178
https://github.com/siemens/jailhouse/commit/68657bf459d72e944eb9a5bbd5c3b71736d21178
Author: Jan Kiszka <jan.k...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M ci/jailhouse-config-vexpress.h
M ci/jailhouse-config-x86.h

Log Message:
-----------
ci: Test CONFIG_TRACE_ERROR in specific targets

Make sure we test both CONFIG_TRACE_ERROR enabled and disabled by
leaving it off for the Banana Pi, and also test it on both
architectures.

Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Commit: db73a985e5102ccef3326a138d117c8aa794128c
https://github.com/siemens/jailhouse/commit/db73a985e5102ccef3326a138d117c8aa794128c
Author: Jan Kiszka <jan.k...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M configs/qemu-vm.c

Log Message:
-----------
configs: Tune qemu config for X mode changes

X triggers accesses to the QEMU VBE ports and some non-existent port
402. Allow both to (re-)enable graphic mode changes.

Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Commit: 8918cd931be78e78aa7a83c93ad7222163b03e2b
https://github.com/siemens/jailhouse/commit/8918cd931be78e78aa7a83c93ad7222163b03e2b
Author: Henning Schild <henning...@siemens.com>
Date: 2015-03-21 (Sat, 21 Mar 2015)

Changed paths:
M tools/jailhouse-config-create

Log Message:
-----------
tools: config create: do not break up ROM memory region

Just take the ROM memory region as one, that avoids creating unalligned
memory regions on some systems.

Signed-off-by: Henning Schild <henning...@siemens.com>
Signed-off-by: Jan Kiszka <jan.k...@siemens.com>


Compare: https://github.com/siemens/jailhouse/compare/e9da2d4231c3...8918cd931be7