Hi Shannon, On 23/06/2016 04:17, Shannon Zhao wrote:
From: Shannon Zhao <shannon.z...@linaro.org>If Xen guest boots with ACPI, the guest kernel will get the event channel interrupt information via domain param HVM_PARAM_CALLBACK_IRQ. Initialize that domain param. Signed-off-by: Shannon Zhao <shannon.z...@linaro.org> --- tools/libxl/libxl_arm_acpi.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/libxl/libxl_arm_acpi.c b/tools/libxl/libxl_arm_acpi.c index 263b5de..8a42125 100644 --- a/tools/libxl/libxl_arm_acpi.c +++ b/tools/libxl/libxl_arm_acpi.c @@ -348,6 +348,7 @@ int libxl__prepare_acpi(libxl__gc *gc, libxl_domain_build_info *info, { const libxl_version_info *vers; int rc; + uint64_t val; /* convenience aliases */ xc_domain_configuration_t *xc_config = &state->config; @@ -373,7 +374,12 @@ int libxl__prepare_acpi(libxl__gc *gc, libxl_domain_build_info *info, make_acpi_dsdt(gc, dom); link_acpi_tables(gc, dom); - return 0; + /* Set the value of domain param HVM_PARAM_CALLBACK_IRQ. */ + val = (uint64_t)HVM_PARAM_CALLBACK_TYPE_PPI << 56; + val |= (2 << 8); /* Active-low level-sensitive */ + val |= GUEST_EVTCHN_PPI & 0xff; + return xc_hvm_param_set(dom->xch, dom->guest_domid, HVM_PARAM_CALLBACK_IRQ, + val);
This is not ACPI specific. It could be done even if ACPI is not inuse. Actually it what we are doing for DOM0. So we need to keep consistent.
} /*
Regards, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
