Introduce a handler for EL2h synchronous exceptions distinct from handlers for other "invalid" exceptions when running with the nVHE host vector. This will allow a future patch to handle kCFI (synchronous) errors without affecting other classes of exceptions. Signed-off-by: Pierre-Clément Tosi <ptosi@xxxxxxxxxx> --- arch/arm64/kvm/hyp/nvhe/host.S | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/host.S b/arch/arm64/kvm/hyp/nvhe/host.S index 7397b4f1838a..0613b6e35137 100644 --- a/arch/arm64/kvm/hyp/nvhe/host.S +++ b/arch/arm64/kvm/hyp/nvhe/host.S @@ -183,7 +183,7 @@ SYM_FUNC_END(__host_hvc) .endif .endm -.macro invalid_host_el2_vect +.macro __host_el2_vect handler:req .align 7 /* @@ -202,7 +202,7 @@ SYM_FUNC_END(__host_hvc) * context has been saved by __host_exit or after the hyp context has * been partially clobbered by __host_enter. */ - b __hyp_panic + b \handler .L__hyp_sp_overflow\@: /* Switch to the overflow stack */ @@ -212,6 +212,10 @@ SYM_FUNC_END(__host_hvc) ASM_BUG() .endm +.macro host_el2_sync_vect + __host_el2_vect __hyp_panic +.endm + .macro invalid_host_el1_vect .align 7 mov x0, xzr /* restore_host = false */ @@ -221,6 +225,10 @@ SYM_FUNC_END(__host_hvc) b __hyp_do_panic .endm +.macro invalid_host_el2_vect + __host_el2_vect __hyp_panic +.endm + /* * The host vector does not use an ESB instruction in order to avoid consuming * SErrors that should only be consumed by the host. Guest entry is deferred by @@ -238,7 +246,7 @@ SYM_CODE_START(__kvm_hyp_host_vector) invalid_host_el2_vect // FIQ EL2t invalid_host_el2_vect // Error EL2t - invalid_host_el2_vect // Synchronous EL2h + host_el2_sync_vect // Synchronous EL2h invalid_host_el2_vect // IRQ EL2h invalid_host_el2_vect // FIQ EL2h invalid_host_el2_vect // Error EL2h -- 2.44.0.478.gd926399ef9-goog -- Pierre
