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| author | Yunhong Jiang <yunhong.jiang@linux.intel.com> | 2026-03-04 15:41:16 -0800 |
|---|---|---|
| committer | Dexuan Cui <decui@microsoft.com> | 2026-05-28 20:01:25 +0000 |
| commit | 7e4c083ece42ed6c90e4071772847db595081e0e (patch) | |
| tree | d711fb8ad9fc0e51fe337224e0588c91b7fdd9eb /arch | |
| parent | 12d58799c19572b98ec84c12ec34a228fe3e8c5c (diff) | |
| download | linux-next-history-7e4c083ece42ed6c90e4071772847db595081e0e.tar.gz | |
x86/hyperv/vtl: Set real_mode_header in hv_vtl_init_platform()
Hyper-V VTL clears x86_platform.realmode_{init(), reserve()} in
hv_vtl_init_platform() whereas it sets real_mode_header later in
hv_vtl_early_init(). There is no need to deal with the settings of real
mode memory in two places. Also, both functions are called much earlier
than x86_platform.realmode_init() (via an early_initcall), where the
real_mode_header is needed.
Set real_mode_header in hv_vtl_init_platform() to keep all code dealing
with memory for the real mode trampoline in one place. Besides making the
code more readable, it prepares it for a subsequent changeset in which the
behavior needs to change to support Hyper-V VTL guests in a TDX
environment.
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Dexuan Cui <dexuan@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/hyperv/hv_vtl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/hyperv/hv_vtl.c b/arch/x86/hyperv/hv_vtl.c index 9b6a9bc4ab760..e045bf3a2c594 100644 --- a/arch/x86/hyperv/hv_vtl.c +++ b/arch/x86/hyperv/hv_vtl.c @@ -70,6 +70,7 @@ void __init hv_vtl_init_platform(void) x86_platform.realmode_reserve = x86_init_noop; x86_platform.realmode_init = x86_init_noop; + real_mode_header = &hv_vtl_real_mode_header; x86_init.irqs.pre_vector_init = x86_init_noop; x86_init.timers.timer_init = x86_init_noop; x86_init.resources.probe_roms = x86_init_noop; @@ -251,7 +252,6 @@ int __init hv_vtl_early_init(void) panic("XSAVE has to be disabled as it is not supported by this module.\n" "Please add 'noxsave' to the kernel command line.\n"); - real_mode_header = &hv_vtl_real_mode_header; apic_update_callback(wakeup_secondary_cpu_64, hv_vtl_wakeup_secondary_cpu); return 0; |