diff options
| author | Marc Zyngier <[email protected]> | 2022-06-30 17:04:53 +0100 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2022-07-01 15:22:51 +0100 |
| commit | b65e411d6cc2f12a728cabe66b930c63c527a340 (patch) | |
| tree | b6a307dc0e11c1201da9e3ed852b5d737dad30a6 /lib/mpi/mpi-sub-ui.c | |
| parent | 7ddb0c3df7881206dcd8339c8dabf0318a781f91 (diff) | |
arm64: Save state of HCR_EL2.E2H before switch to EL1
As we're about to switch the way E2H-stuck CPUs boot, save
the boot CPU E2H state as a flag tied to the boot mode
that can then be checked by the idreg override code.
This allows us to replace the is_kernel_in_hyp_mode() check
with a simple comparison with this state, even when running
at EL1. Note that this flag isn't saved in __boot_cpu_mode,
and is only kept in a register in the assembly code.
Use with caution.
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-sub-ui.c')
0 files changed, 0 insertions, 0 deletions