Anup Patel c667ad229d RISC-V: KVM: Forward SBI DBCN extension to user-space ...

The frozen SBI v2.0 specification defines the SBI debug console
(DBCN) extension which replaces the legacy SBI v0.1 console
functions namely sbi_console_getchar() and sbi_console_putchar().

The SBI DBCN extension needs to be emulated in the KVM user-space
(i.e. QEMU-KVM or KVMTOOL) so we forward SBI DBCN calls from KVM
guest to the KVM user-space which can then redirect the console
input/output to wherever it wants (e.g. telnet, file, stdio, etc).

The SBI debug console is simply a early console available to KVM
guest for early prints and it does not intend to replace the proper
console devices such as 8250, VirtIO console, etc.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>

2023-10-20 16:50:36 +05:30

..

aia_aplic.c

RISC-V: KVM: Expose APLIC registers as attributes of AIA irqchip

2023-06-18 21:24:50 +05:30

aia_device.c

RISC-V: KVM: Remove unneeded semicolon

2023-06-20 10:48:38 +05:30

aia_imsic.c

RISC-V: KVM: Remove unneeded semicolon

2023-06-20 10:48:38 +05:30

aia.c

RISC-V: KVM: return ENOENT in *_one_reg() when reg is unknown

2023-08-08 17:25:42 +05:30

Kconfig

RISC-V: KVM: Skeletal in-kernel AIA irqchip support

2023-06-18 21:24:40 +05:30

main.c

RISC-V: KVM: Implement guest external interrupt line management

2023-06-18 21:24:33 +05:30

Makefile

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

2023-08-08 17:25:29 +05:30

mmu.c

Common KVM changes for 6.6:

2023-08-31 13:19:55 -04:00

tlb.c

RISC-V: KVM: use bitmap_zero() API

2023-06-06 08:51:50 +05:30

vcpu_exit.c

RISC-V: KVM: Redirect AMO load/store misaligned traps to guest

2023-06-06 09:04:11 +05:30

vcpu_fp.c

RISC-V: KVM: return ENOENT in *_one_reg() when reg is unknown

2023-08-08 17:25:42 +05:30

vcpu_insn.c

RISC-V: KVM: Initial skeletal support for AIA

2023-04-21 17:45:48 +05:30

vcpu_onereg.c

RISC-V: KVM: Allow Zicond extension for Guest/VM

2023-10-12 18:44:23 +05:30

vcpu_pmu.c

RISC-V: KVM: Support firmware events

2023-02-07 20:36:06 +05:30

vcpu_sbi_base.c

RISC-V: KVM: Add ONE_REG interface to enable/disable SBI extensions

2023-04-21 17:38:44 +05:30

vcpu_sbi_hsm.c

RISC-V: KVM: Modify SBI extension handler to return SBI error code

2023-02-07 20:35:45 +05:30

vcpu_sbi_pmu.c

RISC-V: KVM: Add SBI PMU extension support

2023-02-07 20:35:53 +05:30

vcpu_sbi_replace.c

RISC-V: KVM: Forward SBI DBCN extension to user-space

2023-10-20 16:50:36 +05:30

vcpu_sbi_v01.c

RISC-V: KVM: Modify SBI extension handler to return SBI error code

2023-02-07 20:35:45 +05:30

vcpu_sbi.c

RISC-V: KVM: Forward SBI DBCN extension to user-space

2023-10-20 16:50:36 +05:30

vcpu_switch.S

RISC-V: KVM: Refine __kvm_riscv_switch_to() implementation

2022-03-11 19:02:22 +05:30

vcpu_timer.c

RISC-V: KVM: do not EOPNOTSUPP in set KVM_REG_RISCV_TIMER_REG

2023-08-08 17:25:49 +05:30

vcpu_vector.c

RISC-V: KVM: Improve vector save/restore functions

2023-08-08 17:26:05 +05:30

vcpu.c

RISC-V: KVM: Allow some SBI extensions to be disabled by default

2023-10-20 16:50:33 +05:30

vm.c

RISC-V: KVM: Skeletal in-kernel AIA irqchip support

2023-06-18 21:24:40 +05:30

vmid.c

RISC-V: KVM: Drop the _MASK suffix from hgatp.VMID mask defines

2023-04-21 17:45:44 +05:30