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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-25 10:55:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-25 10:55:35 -0700 |
| commit | bd6aabc7ca39dd28a27fe1ec99e36e941cfb8192 (patch) | |
| tree | 8a6367384d38857bccfd2a7625087c1e9d7b4932 /arch | |
| parent | 81ecf91eab1045c009b5d73408c44033ba86bb4d (diff) | |
| parent | 1a89c1dc9520b908e7894652ee2b19db9de37b64 (diff) | |
| download | lwn-bd6aabc7ca39dd28a27fe1ec99e36e941cfb8192.tar.gz lwn-bd6aabc7ca39dd28a27fe1ec99e36e941cfb8192.zip | |
Merge tag 'for-linus-5.10b-rc1c-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull more xen updates from Juergen Gross:
- a series for the Xen pv block drivers adding module parameters for
better control of resource usge
- a cleanup series for the Xen event driver
* tag 'for-linus-5.10b-rc1c-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
Documentation: add xen.fifo_events kernel parameter description
xen/events: unmask a fifo event channel only if it was masked
xen/events: only register debug interrupt for 2-level events
xen/events: make struct irq_info private to events_base.c
xen: remove no longer used functions
xen-blkfront: Apply changed parameter name to the document
xen-blkfront: add a parameter for disabling of persistent grants
xen-blkback: add a parameter for disabling of persistent grants
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/smp.c | 19 | ||||
| -rw-r--r-- | arch/x86/xen/xen-ops.h | 2 |
2 files changed, 13 insertions, 8 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 2097fa0ebdb5..c1b2f764b29a 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -88,14 +88,17 @@ int xen_smp_intr_init(unsigned int cpu) per_cpu(xen_callfunc_irq, cpu).irq = rc; per_cpu(xen_callfunc_irq, cpu).name = callfunc_name; - debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu); - rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu, xen_debug_interrupt, - IRQF_PERCPU | IRQF_NOBALANCING, - debug_name, NULL); - if (rc < 0) - goto fail; - per_cpu(xen_debug_irq, cpu).irq = rc; - per_cpu(xen_debug_irq, cpu).name = debug_name; + if (!xen_fifo_events) { + debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu); + rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu, + xen_debug_interrupt, + IRQF_PERCPU | IRQF_NOBALANCING, + debug_name, NULL); + if (rc < 0) + goto fail; + per_cpu(xen_debug_irq, cpu).irq = rc; + per_cpu(xen_debug_irq, cpu).name = debug_name; + } callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu); rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_SINGLE_VECTOR, diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 45d556f71858..9546c3384c75 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -29,6 +29,8 @@ extern struct start_info *xen_start_info; extern struct shared_info xen_dummy_shared_info; extern struct shared_info *HYPERVISOR_shared_info; +extern bool xen_fifo_events; + void xen_setup_mfn_list_list(void); void xen_build_mfn_list_list(void); void xen_setup_machphys_mapping(void); |