From 71fb2dcb0023d49fc048e1f7b610ad05bd2efc32 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Corvin=20K=C3=B6hne?= Date: Wed, 10 May 2023 13:44:28 +0200 Subject: [PATCH] bhyve: pass address of OpRegion to the guest Don't allow access to the physical ASLS register. It contains a host address which is meaningless for the guest. Additionally, it allows the guest to safely rewrite this register. This is the last commit required for GVT-d. Nevertheless, it might not work due to missing firmware support. MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D26209 --- usr.sbin/bhyve/pci_gvt-d.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/usr.sbin/bhyve/pci_gvt-d.c b/usr.sbin/bhyve/pci_gvt-d.c index 4616bc84d27..35c7f30dd29 100644 --- a/usr.sbin/bhyve/pci_gvt-d.c +++ b/usr.sbin/bhyve/pci_gvt-d.c @@ -256,7 +256,10 @@ gvt_d_setup_opregion(struct pci_devinst *const pi) memcpy(opregion->gva, opregion->hva, opregion->len); - return (0); + pci_set_cfgdata32(pi, PCIR_ASLS_CTL, opregion->gpa); + + return (set_pcir_handler(sc, PCIR_ASLS_CTL, 4, passthru_cfgread_emulate, + passthru_cfgwrite_emulate)); } static int