From bb45580d842530d78b58179eaf80b6331b15324e Mon Sep 17 00:00:00 2001 From: Xiaoyao Li Date: Thu, 8 May 2025 10:59:44 -0400 Subject: [PATCH] i386/tdx: Set and check kernel_irqchip mode for TDX MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit KVM mandates kernel_irqchip to be split mode. Set it to split mode automatically when users don't provide an explicit value, otherwise check it to be the split mode. Suggested-by: Daniel P. Berrangé Signed-off-by: Xiaoyao Li Reviewed-by: Daniel P. Berrangé Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/20250508150002.689633-39-xiaoyao.li@intel.com Signed-off-by: Paolo Bonzini --- target/i386/kvm/tdx.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 32c3f3795d..68ed3b9f98 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -16,6 +16,7 @@ #include "qapi/error.h" #include "qom/object_interfaces.h" #include "crypto/hash.h" +#include "system/kvm_int.h" #include "system/runstate.h" #include "system/system.h" #include "system/ramblock.h" @@ -388,6 +389,13 @@ static int tdx_kvm_init(ConfidentialGuestSupport *cgs, Error **errp) return -EINVAL; } + if (kvm_state->kernel_irqchip_split == ON_OFF_AUTO_AUTO) { + kvm_state->kernel_irqchip_split = ON_OFF_AUTO_ON; + } else if (kvm_state->kernel_irqchip_split != ON_OFF_AUTO_ON) { + error_setg(errp, "TDX VM requires kernel_irqchip to be split"); + return -EINVAL; + } + if (!tdx_caps) { r = get_tdx_capabilities(errp); if (r) { -- 2.39.5