clearlinux/kvmtool
2
0
Fork 0
mirror of https://github.com/clearlinux/kvmtool.git synced 2026-10-04 15:58:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Dump KVM_EXIT_IO details

Browse Source 
When KVM_RUN returns with KVM_EXIT_IO, dump the I/O details and exit.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Pekka Enberg
2015-06-01 16:39:38 +01:00
committed by Will Deacon
parent 2177ec43a9
commit 8d20223edc
1 changed files with 36 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kvm.c
+36 -1
View File
@@ -282,6 +282,24 @@ static void kvm__reset_vcpu(struct kvm *self, uint64_t rip)
self->regs.rflags = 0x0000000000000002ULL;
}
static void kvm__emulate_io_out(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
{
fprintf(stderr, "%s port=%x, size=%d, count=%" PRIu32 "\n", __func__, port, size, count);
}
static void kvm__emulate_io_in(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
{
fprintf(stderr, "%s port=%x, size=%d, count=%" PRIu32 "\n", __func__, port, size, count);
}
static void kvm__emulate_io(struct kvm *self, uint16_t port, void *data, int direction, int size, uint32_t count)
{
if (direction == KVM_EXIT_IO_IN)
kvm__emulate_io_in(self, port, data, size, count);
else
kvm__emulate_io_out(self, port, data, size, count);
}
int main(int argc, char *argv[])
{
const char *kernel_filename;
@@ -300,8 +318,25 @@ int main(int argc, char *argv[])
kvm__reset_vcpu(kvm, kernel_start);
kvm__run(kvm);
for (;;) {
kvm__run(kvm);
switch (kvm->kvm_run->exit_reason) {
case KVM_EXIT_IO:
kvm__emulate_io(kvm,
kvm->kvm_run->io.port,
(uint8_t *)kvm->kvm_run + kvm->kvm_run->io.data_offset,
kvm->kvm_run->io.direction,
kvm->kvm_run->io.size,
kvm->kvm_run->io.count);
goto exit_kvm;
break;
default:
goto exit_kvm;
}
}
exit_kvm:
fprintf(stderr, "KVM exit reason: %" PRIu32 " (\"%s\")\n",
kvm->kvm_run->exit_reason, exit_reasons[kvm->kvm_run->exit_reason]);