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d3cd3b5501
The main addition is the initial support for the notifications and memory transaction descriptor changes added in FF-A v1.1 specification. The notification mechanism enables a requester/sender endpoint to notify a service provider/receiver endpoint about an event with non-blocking semantics. A notification is akin to the doorbell between two endpoints in a communication protocol that is based upon the doorbell/mailbox mechanism. The framework is responsible for the delivery of the notification from the ender to the receiver without blocking the sender. The receiver endpoint relies on the OS scheduler for allocation of CPU cycles to handle a notification. OS is referred as the receiver’s scheduler in the context of notifications. The framework is responsible for informing the receiver’s scheduler that the receiver must be run since it has a pending notification. The series also includes support for the new format of memory transaction descriptors introduced in v1.1 specification. Apart from the main additions, it includes minor fixes to re-enable FF-A drivers usage of 32bit mode of messaging and kernel warning due to the missing assignment of IDR allocation ID to the FFA device. It also adds emitting 'modalias' to the base attribute of FF-A devices. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEunHlEgbzHrJD3ZPhAEG6vDF+4pgFAmUlJuUACgkQAEG6vDF+ 4pinPRAAzLFtehLNhpC2BsEbvdJo/bSeGl1OAricml3gyU45W7AamAPuplA9E871 GxXMYbH5+mnqz5cHaYBb8KGm5dRENrtKgrwMITg3jOlqdz9HWy2MLgbSmvqbXNsU 5O8iZDvFOTCMLSEI6gWnaiKRpAzDSFu0/FH86xv+9+pbjmjL3iDjFlbxbGLFYk+L gqHLdx4iW6aD6geC2n8oDO6UWCNLaHpXaJSAE6pfh/7pkuKMWYjVwivKxrMA9Saw WjoyBdjUgir9w6qJauR94MGMnbPTd378MzBrEWMo04I2ubLCVwiPVDEEu7jZGrBV 2n5DD8/0fSak9KEEozRKnj9umhmvHN9Of72qBLNZ0K4zmq8Fs00woXIlnUNH0dcZ qZN/ZEDXpD51OsgMH+ojojaqFEcFynEQIQjibiv1Ju16F+1PIABCyODgb58fIa71 WvRUXVttkml6boY7KqGIDRiSRfEIZfoWqKucFpEbRwCXLLqc2VJ4UYUiYB1B3fD1 g3ZuQXhurwfLG7SwrKK4KWFLHTSNj4IuixeqsAM+PYyTE5iquP3xpqYgbb99n9VT SWCyQdw0e+DyAhzmx0ZZZtCO2f54JQY852jHSkQFQsRNcK+h2exYxjIE7NfgfIGG H1NvJjumunOZEOZr+Wwz74wDJDMoLvMJTGr4ovIkNn/xb+4lcHU= =bHXY -----END PGP SIGNATURE----- gpgsig -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmUto10ACgkQYKtH/8kJ UidIlw//e0ZkLIffq0d9svTie4NHxxb8AEu8sqnxr1HcinpCfa2Cwi6utt+y5XXc Ti7T7Jj/BKnwTfNXw6REvKplBhMGMQFkKcrX7lSnDpPhzCj8Ls0j78ac52KfmVpi HmzRchsdKtKBYKZOBA+gnBABu38O9QvuteDKJXx8vzowztYJpHc/UmE5qYHwVWDT kKqNzFo34zvLS/ephZZFV113ji3foQiOFCWtx408nfcUvW/g8H3xRp6njPlmP0Ue PhFbR3qsEV/nLTafypACsxSappuHngtInXZA2cpA6LKc0oS426rTvY6i167amOq4 ktcqmVdD6mbNEApTsB5O32TK+AI2rPvCh6OCS0x0M6+yWhZVGjZXZgzr1Ma3uphz dD3HcXYEaMHJQVAu8npVo5x3UEApOts+SX7QY4IlekzCzr1guhnWKnmxTS8jYx2Z HzwJatmvb+ENzbZHX2R1Y53keue/oq0AkYva0gNVK6F7ELjowDmV0l02qm5G0aBC 3Pa1KEYpb34qagwknzFjGubBrJcPX/sdzt1KWUoCLDbveb+HCaPKlGipOs3PjMLy s/IeGH7LED3XbfxDpsRuzkwgtKzuvmdaWfgccx56rPjMlh763fvS16DB2PUiJ4FP qv7fu98hvVG2Z2eFVHib3FT6isw4NVmsXRzc6uW54nVKj2pQmRY= =QaJo -----END PGP SIGNATURE----- Merge tag 'ffa-updates-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into soc/drivers Arm FF-A updates for v6.7 The main addition is the initial support for the notifications and memory transaction descriptor changes added in FF-A v1.1 specification. The notification mechanism enables a requester/sender endpoint to notify a service provider/receiver endpoint about an event with non-blocking semantics. A notification is akin to the doorbell between two endpoints in a communication protocol that is based upon the doorbell/mailbox mechanism. The framework is responsible for the delivery of the notification from the ender to the receiver without blocking the sender. The receiver endpoint relies on the OS scheduler for allocation of CPU cycles to handle a notification. OS is referred as the receiver’s scheduler in the context of notifications. The framework is responsible for informing the receiver’s scheduler that the receiver must be run since it has a pending notification. The series also includes support for the new format of memory transaction descriptors introduced in v1.1 specification. Apart from the main additions, it includes minor fixes to re-enable FF-A drivers usage of 32bit mode of messaging and kernel warning due to the missing assignment of IDR allocation ID to the FFA device. It also adds emitting 'modalias' to the base attribute of FF-A devices. * tag 'ffa-updates-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: firmware: arm_ffa: Upgrade the driver version to v1.1 firmware: arm_ffa: Update memory descriptor to support v1.1 format firmware: arm_ffa: Switch to using ffa_mem_desc_offset() accessor KVM: arm64: FFA: Remove access of endpoint memory access descriptor array firmware: arm_ffa: Simplify the computation of transmit and fragment length firmware: arm_ffa: Add notification handling mechanism firmware: arm_ffa: Add interface to send a notification to a given partition firmware: arm_ffa: Add interfaces to request notification callbacks firmware: arm_ffa: Add schedule receiver callback mechanism firmware: arm_ffa: Initial support for scheduler receiver interrupt firmware: arm_ffa: Implement the NOTIFICATION_INFO_GET interface firmware: arm_ffa: Implement the FFA_NOTIFICATION_GET interface firmware: arm_ffa: Implement the FFA_NOTIFICATION_SET interface firmware: arm_ffa: Implement the FFA_RUN interface firmware: arm_ffa: Implement the notification bind and unbind interface firmware: arm_ffa: Implement notification bitmap create and destroy interfaces firmware: arm_ffa: Update the FF-A command list with v1.1 additions firmware: arm_ffa: Emit modalias for FF-A devices firmware: arm_ffa: Allow the FF-A drivers to use 32bit mode of messaging firmware: arm_ffa: Assign the missing IDR allocation ID to the FFA device Link: https://lore.kernel.org/r/20231010124354.1620064-1-sudeep.holla@arm.com Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.