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https://github.com/torvalds/linux
05 April 2024, 19:05:47 UTC
Revision 8f5cb44b1bae8520c0705ce348b30ffb1fdda43a authored by Atish Patra on 22 July 2022, 16:50:47 UTC, committed by Palmer Dabbelt on 12 August 2022, 14:43:57 UTC 
RISC-V: KVM: Support sstc extension
 
Sstc extension allows the guest to program the vstimecmp CSR directly
instead of making an SBI call to the hypervisor to program the next
event. The timer interrupt is also directly injected to the guest by
the hardware in this case. To maintain backward compatibility, the
hypervisors also update the vstimecmp in an SBI set_time call if
the hardware supports it. Thus, the older kernels in guest also
take advantage of the sstc extension.

Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Acked-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/all/CAAhSdy2mb6wyqy0NAn9BcTWKMYEc0Z4zU3s3j7oNqBz6eDQ9sg@mail.gmail.com/
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
1 parent 9801002
History
Tip revision: 8f5cb44b1bae8520c0705ce348b30ffb1fdda43a authored by Atish Patra on 22 July 2022, 16:50:47 UTC
RISC-V: KVM: Support sstc extension
Tip revision: 8f5cb44
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arch
block
certs
crypto
drivers
fs
include
init
io_uring
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 19.8 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 62 bytes
.gitignore -rw-r--r-- 1.9 KB
.mailmap -rw-r--r-- 23.5 KB
COPYING -rw-r--r-- 496 bytes
CREDITS -rw-r--r-- 99.1 KB
Kbuild -rw-r--r-- 1.3 KB
Kconfig -rw-r--r-- 555 bytes
MAINTAINERS -rw-r--r-- 662.4 KB
Makefile -rw-r--r-- 64.1 KB
README -rw-r--r-- 727 bytes

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