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| author | Anup Patel <apatel@ventanamicro.com> | 2022-07-22 19:46:24 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-10-20 16:50:36 +0530 |
| commit | c667ad229d13c41590882a35a8c159387b4e149b (patch) | |
| tree | d2e8edb3b74e0f70dbfddc43946e357ce50a7400 /drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c | |
| parent | 56d8a385b60556019ecb45d6098830c9ef6a13e0 (diff) | |
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c')
0 files changed, 0 insertions, 0 deletions