mirror of https://gitee.com/openkylin/linux.git
42d02b81f2
There are a few key differences between doorbells on server compared with embedded that we care about on Linux, namely: - We have a new msgsndp instruction for directed privileged doorbells. msgsnd is used for directed hypervisor doorbells. - The tag we use in the instruction is the Thread Identification Register of the recipient thread (since server doorbells can only occur between threads within a single core), and is only 7 bits wide. - A new message type is introduced for server doorbells (none of the existing book3e message types are currently supported on book3s). Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Tested-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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boot | ||
configs | ||
crypto | ||
include | ||
kernel | ||
kvm | ||
lib | ||
math-emu | ||
mm | ||
net | ||
oprofile | ||
perf | ||
platforms | ||
sysdev | ||
xmon | ||
Kconfig | ||
Kconfig.debug | ||
Makefile | ||
relocs_check.pl |