Changes in Makefile

023c1515 - RISC-V: KVM: Add SBI system suspend support

Thu, 17 Oct 2024 07:45:40 +0000

RISC-V: KVM: Add SBI system suspend supportImplement a KVM SBI SUSP extension handler. The handler onlyvalidates the system suspend entry criteria and prepares for resumingin the appropriate state at the resume_addr (as specified by the SBIspec), but then it forwards the call to the VMM where any systemsuspend behavior may be implemented. Since VMM support is needed, KVMdisables the extension by default.Signed-off-by: Andrew Jones Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20241017074538.18867-5-ajones@ventanamicro.comSigned-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

d466c19c - RISC-V: KVM: Add common nested acceleration support

Sun, 20 Oct 2024 19:47:29 +0000

RISC-V: KVM: Add common nested acceleration supportAdd a common nested acceleration support which will be shared byall parts of KVM RISC-V. This nested acceleration support detectsand enables SBI NACL extension usage based on static keys whichensures minimum impact on the non-nested scenario.Signed-off-by: Anup Patel Reviewed-by: Atish Patra Link: https://lore.kernel.org/r/20241020194734.58686-9-apatel@ventanamicro.comSigned-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

e403a90a - RISC-V: KVM: Order the object files alphabetically

Sun, 20 Oct 2024 19:47:22 +0000

RISC-V: KVM: Order the object files alphabeticallyOrder the object files alphabetically in the Makefile so thatit is very predictable inserting new object files in the future.Signed-off-by: Anup Patel Reviewed-by: Atish Patra Link: https://lore.kernel.org/r/20241020194734.58686-2-apatel@ventanamicro.comSigned-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

b1992c37 - kbuild: use $(src) instead of $(srctree)/$(src) for source directory

Sat, 27 Apr 2024 14:55:02 +0000

kbuild: use $(src) instead of $(srctree)/$(src) for source directoryKbuild conventionally uses $(obj)/ for generated files, and $(src)/ forchecked-in source files. It is merely a convention without any functionaldifference. In fact, $(obj) and $(src) are exactly the same, as definedin scripts/Makefile.build: src := $(obj)When the kernel is built in a separate output directory, $(src) doesnot accurately reflect the source directory location. While Kbuildresolves this discrepancy by specifying VPATH=$(srctree) to search forsource files, it does not cover all cases. For example, when adding aheader search path for local headers, -I$(srctree)/$(src) is typicallypassed to the compiler.This introduces inconsistency between upstream and downstream Makefilesbecause $(src) is used instead of $(srctree)/$(src) for the latter.To address this inconsistency, this commit changes the semantics of$(src) so that it always points to the directory in the source tree.Going forward, the variables used in Makefiles will have the followingmeanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source treeConsequently, $(srctree)/$(src) in upstream Makefiles need to be replacedwith $(src).Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/riscv/kvm/Makefile

5fed84a8 - RISC-V: KVM: Add SBI STA extension skeleton

Wed, 20 Dec 2023 16:00:17 +0000

RISC-V: KVM: Add SBI STA extension skeletonAdd the files and functions needed to support the SBI STA(steal-time accounting) extension. In the next patches we'llcomplete the functions to fully enable SBI STA support.Reviewed-by: Anup Patel Reviewed-by: Atish Patra Signed-off-by: Andrew Jones Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

e98b1085 - RISC-V: KVM: Factor-out ONE_REG related code to its own source file

Tue, 11 Jul 2023 12:10:47 +0000

RISC-V: KVM: Factor-out ONE_REG related code to its own source fileThe VCPU ONE_REG interface has grown over time and it will continueto grow with new ISA extensions and other features. Let us move allONE_REG related code to its own source file so that vcpu.c onlyfocuses only on high-level VCPU functions.Signed-off-by: Anup Patel Reviewed-by: Andrew Jones Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

db8b7e97 - RISC-V: KVM: Add in-kernel virtualization of AIA IMSIC

Thu, 15 Jun 2023 07:33:52 +0000

RISC-V: KVM: Add in-kernel virtualization of AIA IMSICWe can have AIA IMSIC support for both HS-level and VS-level butthe VS-level IMSICs are optional. We use the VS-level IMSICs forGuest/VM whenever available otherwise we fallback to softwareemulation of AIA IMSIC.This patch adds in-kernel virtualization of AIA IMSIC.Signed-off-by: Anup Patel Reviewed-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

74967aa2 - RISC-V: KVM: Add in-kernel emulation of AIA APLIC

Thu, 15 Jun 2023 07:33:50 +0000

RISC-V: KVM: Add in-kernel emulation of AIA APLICThere is no virtualization support in AIA APLIC so we add in-kernelemulation of AIA APLIC which only supports MSI-mode (i.e. wiredinterrupts forwarded to AIA IMSIC as MSIs).Signed-off-by: Anup Patel Reviewed-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

89d01306 - RISC-V: KVM: Implement device interface for AIA irqchip

Thu, 15 Jun 2023 07:33:49 +0000

RISC-V: KVM: Implement device interface for AIA irqchipWe implement KVM device interface for in-kernel AIA irqchip so thatuser-space can use KVM device ioctls to create, configure, and destroyin-kernel AIA irqchip.Signed-off-by: Anup Patel Reviewed-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

0f4b8257 - riscv: KVM: Add vector lazy save/restore support

Mon, 05 Jun 2023 11:07:16 +0000

riscv: KVM: Add vector lazy save/restore supportThis patch adds vector context save/restore for guest VCPUs. To reduce theimpact on KVM performance, the implementation imitates the FP contextswitch mechanism to lazily store and restore the vector context only whenthe kernel enters/exits the in-kernel run loop and not during the KVMworld switch.Signed-off-by: Vincent Chen Signed-off-by: Greentime Hu Signed-off-by: Andy Chiu Reviewed-by: Anup Patel Acked-by: Anup Patel Link: https://lore.kernel.org/r/20230605110724.21391-20-andy.chiu@sifive.comSigned-off-by: Palmer Dabbelt List of files: /linux-6.15/arch/riscv/kvm/Makefile

54e43320 - RISC-V: KVM: Initial skeletal support for AIA

Tue, 10 Jan 2023 11:14:25 +0000

RISC-V: KVM: Initial skeletal support for AIATo incrementally implement AIA support, we first add minimal skeletalsupport which only compiles and detects AIA hardware support at theboot-time but does not provide any functionality.Signed-off-by: Anup Patel Reviewed-by: Atish Patra Reviewed-by: Andrew Jones Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

cbddc4c4 - RISC-V: KVM: Add SBI PMU extension support

Tue, 07 Feb 2023 09:55:23 +0000

RISC-V: KVM: Add SBI PMU extension supportSBI PMU extension allows KVM guests to configure/start/stop/queryabout the PMU counters in virtualized enviornment as well.In order to allow that, KVM implements the entire SBI PMU extension.Reviewed-by: Anup Patel Reviewed-by: Andrew Jones Signed-off-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

8f0153ec - RISC-V: KVM: Add skeleton support for perf

Tue, 07 Feb 2023 09:55:22 +0000

RISC-V: KVM: Add skeleton support for perfThis patch only adds barebone structure of perf implementation. Mostof the function returns zero at this point and will be implementedfully in the future.Reviewed-by: Anup Patel Reviewed-by: Andrew Jones Signed-off-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

b91f0e4c - RISC-V: KVM: Factor-out instruction emulation into separate sources

Fri, 29 Jul 2022 11:44:40 +0000

RISC-V: KVM: Factor-out instruction emulation into separate sourcesThe instruction and CSR emulation for VCPU is going to grow over timedue to upcoming AIA, PMU, Nested and other virtualization features.Let us factor-out VCPU instruction emulation from vcpu_exit.c to aseparate source dedicated for this purpose.Signed-off-by: Anup Patel Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

3e1d8656 - RISC-V: KVM: Add SBI HSM extension in KVM

Thu, 18 Nov 2021 08:39:12 +0000

RISC-V: KVM: Add SBI HSM extension in KVMSBI HSM extension allows OS to start/stop harts any time. It also allowsordered booting of harts instead of random booting.Implement SBI HSM exntesion and designate the vcpu 0 as the boot vcpu id.All other non-zero non-booting vcpus should be brought up by the OSimplementing HSM extension. If the guest OS doesn't implement HSMextension, only single vcpu will be available to OS.Signed-off-by: Atish Patra Signed-off-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

5f862df5 - RISC-V: KVM: Add v0.1 replacement SBI extensions defined in v0.2

Thu, 18 Nov 2021 08:39:11 +0000

RISC-V: KVM: Add v0.1 replacement SBI extensions defined in v0.2The SBI v0.2 contains some of the improved versions of required v0.1extensions such as remote fence, timer and IPI.This patch implements those extensions.Signed-off-by: Atish Patra Signed-off-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

c62a7685 - RISC-V: KVM: Add SBI v0.2 base extension

Thu, 18 Nov 2021 08:39:10 +0000

RISC-V: KVM: Add SBI v0.2 base extensionSBI v0.2 base extension defined to allow backward compatibility andprobing of future extensions. This is also the only mandatory SBIextension that must be implemented by SBI implementors.Signed-off-by: Atish Patra Signed-off-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

a046c2d8 - RISC-V: KVM: Reorganize SBI code by moving SBI v0.1 to its own file

Thu, 18 Nov 2021 08:39:09 +0000

RISC-V: KVM: Reorganize SBI code by moving SBI v0.1 to its own fileWith SBI v0.2, there may be more SBI extensions in future. It makes moresense to group related extensions in separate files. Guest kernel willchoose appropriate SBI version dynamically.Move the existing implementation to a separate file so that it can beremoved in future without much conflict.Signed-off-by: Atish Patra Signed-off-by: Atish Patra Signed-off-by: Anup Patel List of files: /linux-6.15/arch/riscv/kvm/Makefile

3e3aa26f - KVM: RISC-V: Use Makefile.kvm for common files

Sun, 21 Nov 2021 12:54:44 +0000

KVM: RISC-V: Use Makefile.kvm for common filesSigned-off-by: David Woodhouse Message-Id: <20211121125451.9489-6-dwmw2@infradead.org>Signed-off-by: Paolo Bonzini List of files: /linux-6.15/arch/riscv/kvm/Makefile

0a86512d - RISC-V: KVM: Factor-out FP virtualization into separate sources

Tue, 26 Oct 2021 17:01:35 +0000

RISC-V: KVM: Factor-out FP virtualization into separate sourcesThe timer and SBI virtualization is already in separate sources.In future, we will have vector and AIA virtualization also addedas separate sources.To align with above described modularity, we factor-out FPvirtualization into separate sources.Signed-off-by: Anup Patel Message-Id: <20211026170136.2147619-3-anup.patel@wdc.com>Signed-off-by: Paolo Bonzini List of files: /linux-6.15/arch/riscv/kvm/Makefile