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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-21 05:38:18 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-21 05:38:18 +0000 |
| commit | 5a918526207805c8c5673e15a92bdf824ce53461 (patch) | |
| tree | 9981a771882546899a1fc0c3b83114fb818810ca /arch/x86/include/asm/qspinlock.h | |
| parent | Releasing progress-linux version 6.10.4-1~progress7.99u1. (diff) | |
| download | linux-5a918526207805c8c5673e15a92bdf824ce53461.tar.xz linux-5a918526207805c8c5673e15a92bdf824ce53461.zip | |
Merging upstream version 6.10.6.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/include/asm/qspinlock.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/x86/include/asm/qspinlock.h b/arch/x86/include/asm/qspinlock.h index a053c12939..68da67df30 100644 --- a/arch/x86/include/asm/qspinlock.h +++ b/arch/x86/include/asm/qspinlock.h @@ -66,13 +66,15 @@ static inline bool vcpu_is_preempted(long cpu) #ifdef CONFIG_PARAVIRT /* - * virt_spin_lock_key - enables (by default) the virt_spin_lock() hijack. + * virt_spin_lock_key - disables by default the virt_spin_lock() hijack. * - * Native (and PV wanting native due to vCPU pinning) should disable this key. - * It is done in this backwards fashion to only have a single direction change, - * which removes ordering between native_pv_spin_init() and HV setup. + * Native (and PV wanting native due to vCPU pinning) should keep this key + * disabled. Native does not touch the key. + * + * When in a guest then native_pv_lock_init() enables the key first and + * KVM/XEN might conditionally disable it later in the boot process again. */ -DECLARE_STATIC_KEY_TRUE(virt_spin_lock_key); +DECLARE_STATIC_KEY_FALSE(virt_spin_lock_key); /* * Shortcut for the queued_spin_lock_slowpath() function that allows |