| Message ID | 20160927152712.81604-1-shannon.zhao@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
>>> On 27.09.16 at 17:27, <shannon.zhao@linaro.org> wrote: > --- a/xen/include/public/hvm/params.h > +++ b/xen/include/public/hvm/params.h > @@ -30,6 +30,7 @@ > */ > > #define HVM_PARAM_CALLBACK_IRQ 0 > +#define HVM_PARAM_CALLBACK_IRQ_TYPE_MASK 0xFF00000000000000ULL Well, I have to admit that I'm somewhat disappointed: I had specifically pointed out that the ULL suffix is not C89 conforming, and that dealing with this may need a little more thought. On the plus side, the mere presence of that #define won't cause C89 compilers to error out. But to help actually using such a value, I think we'd better introduce xen_mk_ullong() (next to the two already existing variants) and use it here and in all other places wrongly using that C99 construct. That way customization by such consumers could be limited to exactly one place. If you wish I can put together the necessary cleanup patch, and you could then re-base yours on top. Jan
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 35ab08d..0cf7dc3 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -2016,9 +2016,12 @@ static void evtchn_fixup(struct domain *d, struct kernel_info *kinfo) d->arch.evtchn_irq); /* Set the value of domain param HVM_PARAM_CALLBACK_IRQ */ - val = (u64)HVM_PARAM_CALLBACK_TYPE_PPI << 56; - val |= (2 << 8); /* Active-low level-sensitive */ - val |= d->arch.evtchn_irq & 0xff; + val = MASK_INSR(HVM_PARAM_CALLBACK_TYPE_PPI, + HVM_PARAM_CALLBACK_IRQ_TYPE_MASK); + /* Active-low level-sensitive */ + val |= MASK_INSR(HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_LOW_LEVEL, + HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_MASK); + val |= d->arch.evtchn_irq; d->arch.hvm_domain.params[HVM_PARAM_CALLBACK_IRQ] = val; /* diff --git a/xen/arch/x86/hvm/irq.c b/xen/arch/x86/hvm/irq.c index 5323d7c..e597114 100644 --- a/xen/arch/x86/hvm/irq.c +++ b/xen/arch/x86/hvm/irq.c @@ -325,7 +325,7 @@ void hvm_set_callback_via(struct domain *d, uint64_t via) unsigned int gsi=0, pdev=0, pintx=0; uint8_t via_type; - via_type = (uint8_t)(via >> 56) + 1; + via_type = (uint8_t)MASK_EXTR(via, HVM_PARAM_CALLBACK_IRQ_TYPE_MASK) + 1; if ( ((via_type == HVMIRQ_callback_gsi) && (via == 0)) || (via_type > HVMIRQ_callback_vector) ) via_type = HVMIRQ_callback_none; diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h index f7338a3..8b126e2 100644 --- a/xen/include/public/hvm/params.h +++ b/xen/include/public/hvm/params.h @@ -30,6 +30,7 @@ */ #define HVM_PARAM_CALLBACK_IRQ 0 +#define HVM_PARAM_CALLBACK_IRQ_TYPE_MASK 0xFF00000000000000ULL /* * How should CPU0 event-channel notifications be delivered? * @@ -66,6 +67,8 @@ * This is only used by ARM/ARM64 and masking/eoi the interrupt associated to * the notification is handled by the interrupt controller. */ +#define HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_MASK 0xFF00 +#define HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_LOW_LEVEL 2 #endif /*
Add macros for HVM_PARAM_CALLBACK_TYPE_PPI operation values and update them in evtchn_fixup(). Also use HVM_PARAM_CALLBACK_IRQ_TYPE_MASK in hvm_set_callback_via(). Cc: Jan Beulich <jbeulich@suse.com> Cc: Andrew Cooper <andrew.cooper3@citrix.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> --- xen/arch/arm/domain_build.c | 9 ++++++--- xen/arch/x86/hvm/irq.c | 2 +- xen/include/public/hvm/params.h | 3 +++ 3 files changed, 10 insertions(+), 4 deletions(-)