git: 5c2f2c5c7a17 - main - arm64/vmm: Support reading MPIDR_EL1

[Andrew Turner]

The branch main has been updated by andrew:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=5c2f2c5c7a17b94d151ffbb822cfa6cb10d4a4e1

commit 5c2f2c5c7a17b94d151ffbb822cfa6cb10d4a4e1
Author:     Andrew Turner <and...@freebsd.org>
AuthorDate: 2025-08-07 09:20:14 +0000
Commit:     Andrew Turner <and...@freebsd.org>
CommitDate: 2025-08-07 09:45:15 +0000

    arm64/vmm: Support reading MPIDR_EL1
    
    We may need access to this in userspace, e.g. to put into the FDT.
    
    Reviewed by:    markj
    Sponsored by:   Arm Ltd
    Differential Revision:  https://reviews.freebsd.org/D51762
---
 sys/arm64/include/vmm.h   | 1 +
 sys/arm64/vmm/vmm_arm64.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/sys/arm64/include/vmm.h b/sys/arm64/include/vmm.h
index 1d783cdacb0d..73b5b4a09591 100644
--- a/sys/arm64/include/vmm.h
+++ b/sys/arm64/include/vmm.h
@@ -89,6 +89,7 @@ enum vm_reg_name {
        VM_REG_GUEST_TTBR1_EL1,
        VM_REG_GUEST_TCR_EL1,
        VM_REG_GUEST_TCR2_EL1,
+       VM_REG_GUEST_MPIDR_EL1,
        VM_REG_LAST
 };
 
diff --git a/sys/arm64/vmm/vmm_arm64.c b/sys/arm64/vmm/vmm_arm64.c
index de2425aae0a1..e293c99a6646 100644
--- a/sys/arm64/vmm/vmm_arm64.c
+++ b/sys/arm64/vmm/vmm_arm64.c
@@ -1251,6 +1251,8 @@ hypctx_regptr(struct hypctx *hypctx, int reg)
                return (&hypctx->tcr_el1);
        case VM_REG_GUEST_TCR2_EL1:
                return (&hypctx->tcr2_el1);
+       case VM_REG_GUEST_MPIDR_EL1:
+               return (&hypctx->vmpidr_el2);
        default:
                break;
        }