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authorLinus Torvalds <torvalds@linux-foundation.org>2024-07-16 12:30:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2024-07-16 12:30:57 -0700
commitf83e38fc9f1092f8a7a65ff2ea6a1ea6502efaf0 (patch)
tree13e3a6118f65ba96ce4faee871912713eddfd300 /arch/x86/xen/spinlock.c
parente55037c879a087a57d775e848a58430ab3380fc1 (diff)
parent9fe6a8c5b247e182c1781556794324a8e26a7cd3 (diff)
Merge tag 'for-linus-6.11-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross: - some trivial cleanups - a fix for the Xen timer - add boot time selectable debug capability to the Xen multicall handling - two fixes for the recently added Xen irqfd handling * tag 'for-linus-6.11-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: remove deprecated xen_nopvspin boot parameter x86/xen: eliminate some private header files x86/xen: make some functions static xen: make multicall debug boot time selectable xen/arm: Convert comma to semicolon xen: privcmd: Fix possible access to a freed kirqfd instance xen: privcmd: Switch from mutex to spinlock for irqfds xen: add missing MODULE_DESCRIPTION() macros x86/xen: Convert comma to semicolon x86/xen/time: Reduce Xen timer tick xen/manage: Constify struct shutdown_handler
Diffstat (limited to 'arch/x86/xen/spinlock.c')
-rw-r--r--arch/x86/xen/spinlock.c20
1 files changed, 5 insertions, 15 deletions
diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c
index 5c6fc16e4b92..8e4efe0fb6f9 100644
--- a/arch/x86/xen/spinlock.c
+++ b/arch/x86/xen/spinlock.c
@@ -18,7 +18,6 @@
static DEFINE_PER_CPU(int, lock_kicker_irq) = -1;
static DEFINE_PER_CPU(char *, irq_name);
static DEFINE_PER_CPU(atomic_t, xen_qlock_wait_nest);
-static bool xen_pvspin = true;
static void xen_qlock_kick(int cpu)
{
@@ -68,7 +67,7 @@ void xen_init_lock_cpu(int cpu)
int irq;
char *name;
- if (!xen_pvspin)
+ if (nopvspin)
return;
WARN(per_cpu(lock_kicker_irq, cpu) >= 0, "spinlock on CPU%d exists on IRQ%d!\n",
@@ -95,7 +94,7 @@ void xen_uninit_lock_cpu(int cpu)
{
int irq;
- if (!xen_pvspin)
+ if (nopvspin)
return;
kfree(per_cpu(irq_name, cpu));
@@ -125,10 +124,10 @@ PV_CALLEE_SAVE_REGS_THUNK(xen_vcpu_stolen);
void __init xen_init_spinlocks(void)
{
/* Don't need to use pvqspinlock code if there is only 1 vCPU. */
- if (num_possible_cpus() == 1 || nopvspin)
- xen_pvspin = false;
+ if (num_possible_cpus() == 1)
+ nopvspin = true;
- if (!xen_pvspin) {
+ if (nopvspin) {
printk(KERN_DEBUG "xen: PV spinlocks disabled\n");
static_branch_disable(&virt_spin_lock_key);
return;
@@ -143,12 +142,3 @@ void __init xen_init_spinlocks(void)
pv_ops.lock.kick = xen_qlock_kick;
pv_ops.lock.vcpu_is_preempted = PV_CALLEE_SAVE(xen_vcpu_stolen);
}
-
-static __init int xen_parse_nopvspin(char *arg)
-{
- pr_notice("\"xen_nopvspin\" is deprecated, please use \"nopvspin\" instead\n");
- xen_pvspin = false;
- return 0;
-}
-early_param("xen_nopvspin", xen_parse_nopvspin);
-