BMC/Intel-BMC/linux.git/arch/x86/kernel/jailhouse.c, branch dev-4.18

x86: Convert x86_platform_ops to timespec64

2018-05-19T12:03:14+00:00

The x86 platform operations are fairly isolated, so it's easy to change them from using timespec to timespec64. It has been checked that all the users and callers are safe, and there is only one critical function that is broken beyond 2106: pvclock_read_wallclock() uses a 32-bit number of seconds since the epoch to communicate the boot time between host and guest in a virtual environment. This will work until 2106, but fixing this is outside the scope of this change, Add a comment at least. Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Gleixner Reviewed-by: Boris Ostrovsky Acked-by: Radim Krčmář Acked-by: Jan Kiszka Cc: Juergen Gross Cc: jailhouse-dev@googlegroups.com Cc: Borislav Petkov Cc: kvm@vger.kernel.org Cc: y2038@lists.linaro.org Cc: "Rafael J. Wysocki" Cc: xen-devel@lists.xenproject.org Cc: John Stultz Cc: Andy Lutomirski Cc: "H. Peter Anvin" Cc: Paolo Bonzini Cc: Andy Shevchenko Cc: Joao Martins Link: https://lkml.kernel.org/r/20180427201435.3194219-1-arnd@arndb.de

x86/jailhouse: Fix incorrect SPDX identifier

2018-04-23T08:17:28+00:00

GPL2.0 is not a valid SPDX identiier. Replace it with GPL-2.0. Fixes: 4a362601baa6 ("x86/jailhouse: Add infrastructure for running in non-root cell") Signed-off-by: Thomas Gleixner Acked-by: Jan Kiszka Cc: Kate Stewart Cc: Jonathan Corbet Cc: Greg Kroah-Hartman Cc: Philippe Ombredanne Link: https://lkml.kernel.org/r/20180422220832.815346488@linutronix.de

x86/jailhouse: Enable PCI mmconfig access in inmates

2018-03-08T11:30:38+00:00

Use the PCI mmconfig base address exported by jailhouse in boot parameters in order to access the memory mapped PCI configuration space. [Jan: rebased, fixed !CONFIG_PCI_MMCONFIG, used pcibios_last_bus] Signed-off-by: Otavio Pontes Signed-off-by: Jan Kiszka Signed-off-by: Thomas Gleixner Reviewed-by: Andy Shevchenko Cc: jailhouse-dev@googlegroups.com Cc: linux-pci@vger.kernel.org Cc: virtualization@lists.linux-foundation.org Cc: Bjorn Helgaas Link: https://lkml.kernel.org/r/2ee9e4401fa22377b3965893a558120f169be82b.1520408357.git.jan.kiszka@siemens.com

x86/jailhouse: Respect pci=lastbus command line settings

2018-01-20T07:15:44+00:00

Limiting the scan width to the known last bus via the command line can accelerate the boot noteworthy. Signed-off-by: Jan Kiszka Signed-off-by: Thomas Gleixner Cc: Jailhouse Link: https://lkml.kernel.org/r/51f5fe62-ca8f-9286-5cdb-39df3fad78b4@siemens.com

x86/jailhouse: Set X86_FEATURE_TSC_KNOWN_FREQ

2018-01-20T07:15:43+00:00

Otherwise, Linux will not recognize precalibrated_tsc_khz and disable the tsc as clocksource. Signed-off-by: Jan Kiszka Signed-off-by: Thomas Gleixner Cc: Jailhouse Link: https://lkml.kernel.org/r/975fbfc9-2a64-cc56-40d5-164992ec3916@siemens.com

x86/jailhouse: Hide x2apic code when CONFIG_X86_X2APIC=n

2018-01-15T09:26:18+00:00

x2apic_phys is not available when CONFIG_X86_X2APIC=n and the code is not optimized out resulting in a build fail: jailhouse.c: In function ‘jailhouse_get_smp_config’: jailhouse.c:73:3: error: ‘x2apic_phys’ undeclared (first use in this function) Fixes: 11c8dc419bbc ("x86/jailhouse: Enable APIC and SMP support") Reported-by: Ingo Molnar Signed-off-by: Thomas Gleixner Cc: Jan Kiszka Cc: jailhouse-dev@googlegroups.com

x86/jailhouse: Initialize PCI support

2018-01-14T20:11:57+00:00

With this change, PCI devices can be detected and used inside a non-root cell. Signed-off-by: Jan Kiszka Signed-off-by: Thomas Gleixner Cc: jailhouse-dev@googlegroups.com Link: https://lkml.kernel.org/r/e8d19494b96b68a749bcac514795d864ad9c28c3.1511770314.git.jan.kiszka@siemens.com

x86/jailhouse: Wire up IOAPIC for legacy UART ports

2018-01-14T20:11:57+00:00

The typical I/O interrupts in non-root cells are MSI-based. However, the platform UARTs do not support MSI. In order to run a non-root cell that shall use one of them, the standard IOAPIC must be registered and 1:1 routing for IRQ 3 and 4 set up. If an IOAPIC is not available, the boot loader clears standard_ioapic in the setup data, so registration is skipped. If the guest is not allowed to to use one of those pins, Jailhouse will simply ignore the access. Signed-off-by: Jan Kiszka Signed-off-by: Thomas Gleixner Cc: jailhouse-dev@googlegroups.com Link: https://lkml.kernel.org/r/90d942dda9d48a8046e00bb3c1bb6757c83227be.1511770314.git.jan.kiszka@siemens.com

x86/jailhouse: Halt instead of failing to restart

2018-01-14T20:11:57+00:00

Jailhouse provides no guest-initiated restart. So, do not even try to. Signed-off-by: Jan Kiszka Signed-off-by: Thomas Gleixner Cc: jailhouse-dev@googlegroups.com Link: https://lkml.kernel.org/r/ef8a0ef95c2b17c21066e5f28ea56b58bf7eaa82.1511770314.git.jan.kiszka@siemens.com

x86/jailhouse: Silence ACPI warning

2018-01-14T20:11:56+00:00

Jailhouse support does not depend on ACPI, and does not even use it. But if it should be enabled, avoid warning about its absence in the platform. Signed-off-by: Jan Kiszka Signed-off-by: Thomas Gleixner Cc: jailhouse-dev@googlegroups.com Link: https://lkml.kernel.org/r/939687007cbd7643b02fd330e8616e7e5944063f.1511770314.git.jan.kiszka@siemens.com