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| author | Keir Fraser <keir@xen.org> | 2011-01-05 09:57:15 +0000 |
|---|---|---|
| committer | Keir Fraser <keir@xen.org> | 2011-01-05 09:57:15 +0000 |
| commit | cc0854dd5708349ec27f640c3e6f7ba6269ea23b (patch) | |
| tree | f40e7c40da0fb8fa041fc6887e2912ebe8083e06 | |
| parent | 866cfd2c229d58f7ba368af04359291aeb4ff436 (diff) | |
| download | xen-cc0854dd5708349ec27f640c3e6f7ba6269ea23b.tar.gz xen-cc0854dd5708349ec27f640c3e6f7ba6269ea23b.tar.bz2 xen-cc0854dd5708349ec27f640c3e6f7ba6269ea23b.zip | |
relax vCPU pinned checks
Both writing of certain MSRs and VCPUOP_get_physid make sense also for
dynamically (perhaps temporarily) pinned vcpus.
Likely a couple of other MSR writes (MSR_K8_HWCR, MSR_AMD64_NB_CFG,
MSR_FAM10H_MMIO_CONF_BASE) would make sense to be restricted by an
is_pinned() check too, possibly also some MSR reads.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
| -rw-r--r-- | xen/arch/x86/domain.c | 2 | ||||
| -rw-r--r-- | xen/arch/x86/traps.c | 2 | ||||
| -rw-r--r-- | xen/include/xen/sched.h | 2 |
3 files changed, 4 insertions, 2 deletions
diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c index f051df0ee3..df659dfd5d 100644 --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -1036,7 +1036,7 @@ arch_do_vcpu_op( struct vcpu_get_physid cpu_id; rc = -EINVAL; - if ( !v->domain->is_pinned ) + if ( !is_pinned_vcpu(v) ) break; cpu_id.phys_id = diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c index ad4231cec4..3da6f8278c 100644 --- a/xen/arch/x86/traps.c +++ b/xen/arch/x86/traps.c @@ -2336,7 +2336,7 @@ static int emulate_privileged_op(struct cpu_user_regs *regs) case MSR_IA32_ENERGY_PERF_BIAS: if ( boot_cpu_data.x86_vendor != X86_VENDOR_INTEL ) goto fail; - if ( (v->domain->domain_id != 0) || !v->domain->is_pinned ) + if ( (v->domain->domain_id != 0) || !is_pinned_vcpu(v) ) break; if ( wrmsr_safe(regs->ecx, msr_content) != 0 ) goto fail; diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h index 43c1b58c66..5087781710 100644 --- a/xen/include/xen/sched.h +++ b/xen/include/xen/sched.h @@ -634,6 +634,8 @@ void watchdog_domain_destroy(struct domain *d); #define is_hvm_domain(d) ((d)->is_hvm) #define is_hvm_vcpu(v) (is_hvm_domain(v->domain)) +#define is_pinned_vcpu(v) ((v)->domain->is_pinned || \ + cpus_weight((v)->cpu_affinity) == 1) #define need_iommu(d) ((d)->need_iommu) void set_vcpu_migration_delay(unsigned int delay); |