debian/patches/virt-Support-detection-for-ARM64-Hyper-V-guests.patch


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From: Boqun Feng <boqun.feng@gmail.com>
Date: Wed, 13 Oct 2021 11:32:09 +0800
Subject: virt: Support detection for ARM64 Hyper-V guests

The detection of Microsoft Hyper-V VMs is done by cpuid currently,
however there is no cpuid on ARM64. And since ARM64 is now a supported
architecture for Microsoft Hyper-V guests[1], then use DMI tables to
detect a Hyper-V guest, which is more generic and works for ARM64.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7aff79e297ee1aa0126924921fd87a4ae59d2467

(cherry picked from commit 506bbc8569014253ea8614b680ccbc4fc2513a87)
---
 src/basic/virt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/basic/virt.c b/src/basic/virt.c
index 7d78a40..0d45ee6 100644
--- a/src/basic/virt.c
+++ b/src/basic/virt.c
@@ -158,6 +158,7 @@ static int detect_vm_dmi(void) {
                 { "Parallels",           VIRTUALIZATION_PARALLELS },
                 /* https://wiki.freebsd.org/bhyve */
                 { "BHYVE",               VIRTUALIZATION_BHYVE     },
+                { "Microsoft",           VIRTUALIZATION_MICROSOFT },
         };
         unsigned i;
         int r;