From b411ba921005f8aa7978dbd1c5fee630c4af298d Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 18 Apr 2023 14:51:56 +0200 Subject: [PATCH] xen: Limit execution to EL1 only Xen core_init() is calling HVC which should be called from EL1 level that's why do Xen initialization only when U-Boot runs in EL1. Signed-off-by: Michal Simek --- drivers/xen/hypervisor.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/xen/hypervisor.c b/drivers/xen/hypervisor.c index 16c7c96c94..0b2311ba26 100644 --- a/drivers/xen/hypervisor.c +++ b/drivers/xen/hypervisor.c @@ -264,8 +264,15 @@ void clear_evtchn(uint32_t port) int xen_init(void) { + int el = current_el(); + debug("%s\n", __func__); + if (el != 1) { + puts("XEN:\tnot running from EL1\n"); + return 0; + } + map_shared_info(NULL); init_events(); init_xenbus(); -- 2.39.5