git: 50734f2ba36b - stable/13 - bhyve: pass address of OpRegion to the guest

The branch stable/13 has been updated by corvink:

URL: https://cgit.FreeBSD.org/src/commit/?id=50734f2ba36bb79d8472a71e6bd0ebb5399786a8

commit 50734f2ba36bb79d8472a71e6bd0ebb5399786a8
Author:     Corvin Köhne <corvink@FreeBSD.org>
AuthorDate: 2023-05-10 11:44:28 +0000
Commit:     Corvin Köhne <corvink@FreeBSD.org>
CommitDate: 2023-08-18 07:32:08 +0000

    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
    
    (cherry picked from commit 71fb2dcb0023d49fc048e1f7b610ad05bd2efc32)
---
 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 4616bc84d275..35c7f30dd292 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