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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [mini-os master] Mini-OS: cleanup hypervisor.c
commit 79839db5e40b4fa56ebbc8f6d17049d4aaf32a8d
Author: Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Wed Dec 13 10:50:17 2023 +0100
Commit: Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Dec 13 10:50:17 2023 +0100
Mini-OS: cleanup hypervisor.c
Do the following cleanups in hypervisor.c:
- Let hypervisor.c conform to the coding style.
- Drop the bogus "inline" attributes of exported functions.
- Replace a always zero cpu variable with smp_processor_id() as
elsewhere in the code.
- Replace "if () BUG()" with BUG_ON() in case the condition has no
side effects.
- Drop the unused cpu parameter from the active_evtchns() macro.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
---
hypervisor.c | 62 ++++++++++++++++++++++++++++++------------------------------
1 file changed, 31 insertions(+), 31 deletions(-)
diff --git a/hypervisor.c b/hypervisor.c
index 6facce3..ba53555 100644
--- a/hypervisor.c
+++ b/hypervisor.c
@@ -1,27 +1,27 @@
/******************************************************************************
* hypervisor.c
- *
+ *
* Communication to/from hypervisor.
- *
+ *
* Copyright (c) 2002-2003, K A Fraser
* Copyright (c) 2005, Grzegorz Milos, gm281@xxxxxxxxx,Intel Research Cambridge
- *
+ *
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
- *
+ *
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
@@ -33,9 +33,8 @@
EXPORT_SYMBOL(hypercall_page);
-#define active_evtchns(cpu,sh,idx) \
- ((sh)->evtchn_pending[idx] & \
- ~(sh)->evtchn_mask[idx])
+#define active_evtchns(sh, idx) \
+ ((sh)->evtchn_pending[idx] & ~(sh)->evtchn_mask[idx])
#ifndef CONFIG_PARAVIRT
extern shared_info_t shared_info;
@@ -48,10 +47,10 @@ int hvm_get_parameter(int idx, uint64_t *value)
xhv.domid = DOMID_SELF;
xhv.index = idx;
ret = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
- if ( ret < 0 )
- BUG();
+ BUG_ON(ret < 0);
*value = xhv.value;
+
return ret;
}
@@ -62,6 +61,7 @@ int hvm_set_parameter(int idx, uint64_t value)
xhv.domid = DOMID_SELF;
xhv.index = idx;
xhv.value = value;
+
return HYPERVISOR_hvm_op(HVMOP_set_param, &xhv);
}
@@ -87,18 +87,15 @@ void unmap_shared_info(void)
xrtp.gpfn = virt_to_pfn(&shared_info);
if ( HYPERVISOR_memory_op(XENMEM_remove_from_physmap, &xrtp) != 0 )
BUG();
-
- return;
}
#endif
void do_hypervisor_callback(struct pt_regs *regs)
{
- unsigned long l1, l2, l1i, l2i;
- unsigned int port;
- int cpu = 0;
+ unsigned long l1, l2, l1i, l2i;
+ unsigned int port;
shared_info_t *s = HYPERVISOR_shared_info;
- vcpu_info_t *vcpu_info = &s->vcpu_info[cpu];
+ vcpu_info_t *vcpu_info = &s->vcpu_info[smp_processor_id()];
BUG_ON(!irqs_disabled());
@@ -113,13 +110,13 @@ void do_hypervisor_callback(struct pt_regs *regs)
{
l1i = __ffs(l1);
l1 &= ~(1UL << l1i);
-
- while ( (l2 = active_evtchns(cpu, s, l1i)) != 0 )
+
+ while ( (l2 = active_evtchns(s, l1i)) != 0 )
{
l2i = __ffs(l2);
l2 &= ~(1UL << l2i);
- port = (l1i * (sizeof(unsigned long) * 8)) + l2i;
+ port = l1i * sizeof(unsigned long) * 8 + l2i;
do_event(port, regs);
}
}
@@ -134,7 +131,8 @@ void force_evtchn_callback(void)
vcpu = &HYPERVISOR_shared_info->vcpu_info[smp_processor_id()];
- while (vcpu->evtchn_upcall_pending) {
+ while ( vcpu->evtchn_upcall_pending )
+ {
do_hypervisor_callback(NULL);
barrier();
};
@@ -142,14 +140,15 @@ void force_evtchn_callback(void)
local_irq_restore(flags);
}
-inline void mask_evtchn(uint32_t port)
+void mask_evtchn(uint32_t port)
{
shared_info_t *s = HYPERVISOR_shared_info;
+
synch_set_bit(port, &s->evtchn_mask[0]);
}
EXPORT_SYMBOL(mask_evtchn);
-inline void unmask_evtchn(uint32_t port)
+void unmask_evtchn(uint32_t port)
{
shared_info_t *s = HYPERVISOR_shared_info;
vcpu_info_t *vcpu_info = &s->vcpu_info[smp_processor_id()];
@@ -160,9 +159,9 @@ inline void unmask_evtchn(uint32_t port)
* The following is basically the equivalent of 'hw_resend_irq'. Just like
* a real IO-APIC we 'lose the interrupt edge' if the channel is masked.
*/
- if ( synch_test_bit (port, &s->evtchn_pending[0]) &&
+ if ( synch_test_bit(port, &s->evtchn_pending[0]) &&
!synch_test_and_set_bit(port / (sizeof(unsigned long) * 8),
- &vcpu_info->evtchn_pending_sel) )
+ &vcpu_info->evtchn_pending_sel) )
{
vcpu_info->evtchn_upcall_pending = 1;
if ( !irqs_disabled() )
@@ -171,9 +170,10 @@ inline void unmask_evtchn(uint32_t port)
}
EXPORT_SYMBOL(unmask_evtchn);
-inline void clear_evtchn(uint32_t port)
+void clear_evtchn(uint32_t port)
{
shared_info_t *s = HYPERVISOR_shared_info;
+
synch_clear_bit(port, &s->evtchn_pending[0]);
}
EXPORT_SYMBOL(clear_evtchn);
--
generated by git-patchbot for /home/xen/git/mini-os.git#master
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