diff options
| author | Juergen Gross <jgross@suse.com> | 2026-01-19 19:26:28 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2026-03-22 08:43:05 +0100 |
| commit | 9eece498565c3fd5f37efe58498779efd39f2269 (patch) | |
| tree | a1814a1d33f9029a2a8d49618595c64348c48c54 /arch/x86/kernel/kvm.c | |
| parent | 36c1eb9531e0c9bdcb3494142123f1c1e128367b (diff) | |
x86/paravirt: Replace io_delay() hook with a bool
The io_delay() paravirt hook is in no way performance critical and all users
setting it to a different function than native_io_delay() are using an empty
function as replacement.
Allow replacing the hook with a bool indicating whether native_io_delay()
should be called.
[ bp: Massage commit message. ]
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20260119182632.596369-3-jgross@suse.com
Diffstat (limited to 'arch/x86/kernel/kvm.c')
| -rw-r--r-- | arch/x86/kernel/kvm.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 3bc062363814..29226d112029 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -75,12 +75,6 @@ DEFINE_PER_CPU_DECRYPTED(struct kvm_steal_time, steal_time) __aligned(64) __visi static int has_steal_clock = 0; static int has_guest_poll = 0; -/* - * No need for any "IO delay" on KVM - */ -static void kvm_io_delay(void) -{ -} #define KVM_TASK_SLEEP_HASHBITS 8 #define KVM_TASK_SLEEP_HASHSIZE (1<<KVM_TASK_SLEEP_HASHBITS) @@ -327,7 +321,7 @@ static void __init paravirt_ops_setup(void) pv_info.name = "KVM"; if (kvm_para_has_feature(KVM_FEATURE_NOP_IO_DELAY)) - pv_ops.cpu.io_delay = kvm_io_delay; + pv_info.io_delay = false; #ifdef CONFIG_X86_IO_APIC no_timer_check = 1; |