From 34e563947c76201c6e941ac17dd35eb87c0e68bb Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V (Arm)" Date: Tue, 7 Apr 2026 20:59:00 +0530 Subject: [PATCH] arm64: rsi: use linear-map alias for realm config buffer rsi_get_realm_config() passes its argument to virt_to_phys(), but &config is a kernel image address and not a linear-map alias. On arm64 this triggers the below warning: virt_to_phys used for non-linear address: (____ptrval____) (config+0x0/0x1000) WARNING: arch/arm64/mm/physaddr.c:15 at __virt_to_phys+0x50/0x70, CPU#0: swapper/0 Modules linked in: ..... Hardware name: linux,dummy-virt (DT) pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __virt_to_phys+0x50/0x70 lr : __virt_to_phys+0x4c/0x70 ..... ...... Call trace: __virt_to_phys+0x50/0x70 (P) arm64_rsi_init+0xa0/0x1b8 setup_arch+0x13c/0x1a0 start_kernel+0x68/0x398 __primary_switched+0x88/0x90 Pass lm_alias(&config) instead so the RSI call uses the linear-map alias of the same buffer and avoids the boot-time warning. Signed-off-by: Aneesh Kumar K.V (Arm) Signed-off-by: Catalin Marinas --- arch/arm64/kernel/rsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/rsi.c b/arch/arm64/kernel/rsi.c index c64a06f58c0b..6e883bc43186 100644 --- a/arch/arm64/kernel/rsi.c +++ b/arch/arm64/kernel/rsi.c @@ -144,7 +144,7 @@ void __init arm64_rsi_init(void) return; if (!rsi_version_matches()) return; - if (WARN_ON(rsi_get_realm_config(&config))) + if (WARN_ON(rsi_get_realm_config(lm_alias(&config)))) return; prot_ns_shared = BIT(config.ipa_bits - 1);