diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2025-08-16 11:06:32 +0100 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-09-15 14:06:44 +0200 |
| commit | fa1d117162aa820a8f73a31ccab85bde6c84725b (patch) | |
| tree | 9ada1e6de56b109b9f30d0769bd41fc6fdef491e /arch/x86/kernel/cpu/hypervisor.c | |
| parent | Linux 6.17-rc6 (diff) | |
| download | linux-fa1d117162aa820a8f73a31ccab85bde6c84725b.tar.gz linux-fa1d117162aa820a8f73a31ccab85bde6c84725b.zip | |
x86/cpu: Detect FreeBSD Bhyve hypervisor
Detect the Bhyve hypervisor and enable 15-bit MSI support if available.
Detecting Bhyve used to be a purely cosmetic issue of the kernel printing
'Hypervisor detected: Bhyve' at boot time.
But FreeBSD 15.0 will support¹ the 15-bit MSI enlightenment to support
more than 255 vCPUs (http://david.woodhou.se/ExtDestId.pdf) which means
there's now actually some functional reason to do so.
¹ https://github.com/freebsd/freebsd-src/commit/313a68ea20b4
[ bp: Massage, move tail comment ontop. ]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Ahmed S. Darwish <darwi@linutronix.de>
Link: https://lore.kernel.org/03802f6f7f5b5cf8c5e8adfe123c397ca8e21093.camel@infradead.org
Diffstat (limited to 'arch/x86/kernel/cpu/hypervisor.c')
| -rw-r--r-- | arch/x86/kernel/cpu/hypervisor.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c index 553bfbfc3a1b..f3e9219845e8 100644 --- a/arch/x86/kernel/cpu/hypervisor.c +++ b/arch/x86/kernel/cpu/hypervisor.c @@ -45,6 +45,9 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] = #ifdef CONFIG_ACRN_GUEST &x86_hyper_acrn, #endif +#ifdef CONFIG_BHYVE_GUEST + &x86_hyper_bhyve, +#endif }; enum x86_hypervisor_type x86_hyper_type; |