Intel OpenBMC Linux kernel source tree (mirror) https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev-4.7 2016-02-22T11:39:13+00:00 2016-02-22T11:39:13+00:00 Jean-Philippe Brucker jean-philippe.brucker@arm.com 2016-02-19T10:04:45+00:00 urn:sha1:c7edd7f99cdaec65e9303b4c9edc19bb595564ed ARMv6 CPUs do not have virtualisation extensions, but hyp-stub.S is still included into the image to keep it generic. In order to use ARMv7 instructions during HYP initialisation, add -march=armv7-a flag to hyp-stub's build. On an ARMv6 CPU, __hyp_stub_install returns as soon as it detects that the mode isn't HYP, so we will never reach those instructions. Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2016-01-12T21:05:36+00:00 Linus Torvalds torvalds@linux-foundation.org 2016-01-12T21:05:36+00:00 urn:sha1:c9bed1cf51011c815d88288b774865d013ca78a8 Pull xen updates from David Vrabel: "Xen features and fixes for 4.5-rc0: - Stolen ticks and PV wallclock support for arm/arm64 - Add grant copy ioctl to gntdev device" * tag 'for-linus-4.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/gntdev: add ioctl for grant copy x86/xen: don't reset vcpu_info on a cancelled suspend xen/gntdev: constify mmu_notifier_ops structures xen/grant-table: constify gnttab_ops structure xen/time: use READ_ONCE xen/x86: convert remaining timespec to timespec64 in xen_pvclock_gtod_notify xen/x86: support XENPF_settime64 xen/arm: set the system time in Xen via the XENPF_settime64 hypercall xen/arm: introduce xen_read_wallclock arm: extend pvclock_wall_clock with sec_hi xen: introduce XENPF_settime64 xen/arm: introduce HYPERVISOR_platform_op on arm and arm64 xen: rename dom0_op to platform_op xen/arm: account for stolen ticks arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops missing include asm/paravirt.h in cputime.c xen: move xen_setup_runstate_info and get_runstate_snapshot to drivers/xen/time.c 2016-01-12T13:41:03+00:00 Russell King rmk+kernel@arm.linux.org.uk 2016-01-12T13:41:03+00:00 urn:sha1:6660800fb7fd0f66faecb3c550fe59709220ade5 2016-01-04T16:24:45+00:00 Jens Wiklander jens.wiklander@linaro.org 2016-01-04T14:46:47+00:00 urn:sha1:e679660dbb8347f275fe5d83a5dd59c1fb6c8e63 Switch to use a generic interface for issuing SMC/HVC based on ARM SMC Calling Convention. Removes now the now unused psci-call.S. Acked-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2016-01-04T16:24:34+00:00 Jens Wiklander jens.wiklander@linaro.org 2016-01-04T14:42:55+00:00 urn:sha1:b329f95d70f3f955093e9a2b18ac1ed3587a8f73 Adds implementation for arm-smccc and enables CONFIG_HAVE_SMCCC for architectures that may support arm-smccc. It's the responsibility of the caller to know if the SMC instruction is supported by the platform. Reviewed-by: Lars Persson <lars.persson@axis.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2016-01-04T11:12:10+00:00 Ard Biesheuvel ard.biesheuvel@linaro.org 2015-12-22T07:24:59+00:00 urn:sha1:5008efc83bf85b647aa1cbc44718b1675bbb7444 The PJ4 inline asm sequence to write to cp15 cannot be built in Thumb-2 mode, due to the way it performs arithmetic on the program counter, so it is built in ARM mode instead. However, building C files in ARM mode under CONFIG_THUMB2_KERNEL is problematic, since the instrumentation performed by subsystems like ftrace does not expect having to deal with interworking branches. Since the sequence in question is simply a poor man's ISB instruction, let's use a straight 'isb' instead when building in Thumb2 mode. Thumb2 implies V7, so 'isb' should always be supported in that case. Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2015-12-21T14:40:54+00:00 Stefano Stabellini stefano.stabellini@eu.citrix.com 2015-11-23T10:32:57+00:00 urn:sha1:02c2433b3aa6b57313c261c9811bbbe49528101c Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on ARM. The only paravirt interface supported is pv_time_ops.steal_clock, so no runtime pvops patching needed. This allows us to make use of steal_account_process_tick for stolen ticks accounting. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Christopher Covington <cov@codeaurora.org> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Russell King <linux@arm.linux.org.uk> 2015-12-13T18:18:30+00:00 Ard Biesheuvel ard.biesheuvel@linaro.org 2015-09-24T20:49:52+00:00 urn:sha1:da58fb6571bf40e5b2287d6aa3bbca04965f5677 This adds support to the kernel proper for booting via UEFI. It shares most of the code with arm64, so this patch mostly just wires it up for use with ARM. Note that this does not include the EFI stub, it is added in a subsequent patch. Tested-by: Ryan Harkin <ryan.harkin@linaro.org> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> 2015-08-10T14:57:44+00:00 Russell King rmk+kernel@arm.linux.org.uk 2015-08-07T18:58:48+00:00 urn:sha1:81497953e37bc28209d9a647171ea93b4a99fc57 2015-08-03T14:38:39+00:00 Mark Rutland mark.rutland@arm.com 2015-07-31T14:46:19+00:00 urn:sha1:be120397e7709d9d5ed88317a385ce864a2603bc Now that the common PSCI client code has been factored out to drivers/firmware, and made safe for 32-bit use, move the 32-bit ARM code over to it. This results in a moderate reduction of duplicated lines, and will prevent further duplication as the PSCI client code is updated for PSCI 1.0 and beyond. The two legacy platform users of the PSCI invocation code are updated to account for interface changes. In both cases the power state parameter (which is constant) is now generated using macros, so that the pack/unpack logic can be killed in preparation for PSCI 1.0 power state changes. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Rob Herring <robh@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ashwin Chaugule <ashwin.chaugule@linaro.org> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>