Age | Commit message (Collapse) | Author | Files | Lines |
|
When the user passed in a NULL mask pass this on from the ioctl
handler.
Found by gcc 4.6's new warnings.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
delay local tlb flush until enter guest moden, it can reduce vpid flush
frequency and reduce remote tlb flush IPI(if KVM_REQ_TLB_FLUSH bit is
already set, IPI is not sent)
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
Use kvm_mmu_flush_tlb() function instead of calling
kvm_x86_ops->tlb_flush(vcpu) directly.
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
This remote tlb flush is no necessary since we have synced while
sp is zapped
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
fix:
[ INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
include/linux/kvm_host.h:258 invoked rcu_dereference_check() without protection!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 1
1 lock held by qemu-system-x86/3796:
#0: (&vcpu->mutex){+.+.+.}, at: [<ffffffffa0217fd8>] vcpu_load+0x1a/0x66 [kvm]
stack backtrace:
Pid: 3796, comm: qemu-system-x86 Not tainted 2.6.34 #25
Call Trace:
[<ffffffff81070ed1>] lockdep_rcu_dereference+0x9d/0xa5
[<ffffffffa0214fdf>] gfn_to_memslot_unaliased+0x65/0xa0 [kvm]
[<ffffffffa0216139>] gfn_to_hva+0x22/0x4c [kvm]
[<ffffffffa0216217>] kvm_write_guest_page+0x2a/0x7f [kvm]
[<ffffffffa0216286>] kvm_clear_guest_page+0x1a/0x1c [kvm]
[<ffffffffa0278239>] init_rmode+0x3b/0x180 [kvm_intel]
[<ffffffffa02786ce>] vmx_set_cr0+0x350/0x4d3 [kvm_intel]
[<ffffffffa02274ff>] kvm_arch_vcpu_ioctl_set_sregs+0x122/0x31a [kvm]
[<ffffffffa021859c>] kvm_vcpu_ioctl+0x578/0xa3d [kvm]
[<ffffffff8106624c>] ? cpu_clock+0x2d/0x40
[<ffffffff810f7d86>] ? fget_light+0x244/0x28e
[<ffffffff810709b9>] ? trace_hardirqs_off_caller+0x1f/0x10e
[<ffffffff8110501b>] vfs_ioctl+0x32/0xa6
[<ffffffff81105597>] do_vfs_ioctl+0x47f/0x4b8
[<ffffffff813ae654>] ? sub_preempt_count+0xa3/0xb7
[<ffffffff810f7da8>] ? fget_light+0x266/0x28e
[<ffffffff810f7c53>] ? fget_light+0x111/0x28e
[<ffffffff81105617>] sys_ioctl+0x47/0x6a
[<ffffffff81002c1b>] system_call_fastpath+0x16/0x1b
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
The name "pid_sync_vcpu_all" isn't appropriate since it just affect
a single vpid, so rename it to vpid_sync_vcpu_single().
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
Add all-context INVVPID type support.
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
collect remote tlb flush in kvm_mmu_pte_write() path
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
Now, we can safely to traverse sp hlish
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
Using kvm_mmu_prepare_zap_page() and kvm_mmu_zap_page() instead of
kvm_mmu_zap_page() that can reduce remote tlb flush IPI
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
In the later patch, we will modify sp's zapping way like below:
kvm_mmu_prepare_zap_page A
kvm_mmu_prepare_zap_page B
kvm_mmu_prepare_zap_page C
....
kvm_mmu_commit_zap_page
[ zaped multiple sps only need to call kvm_mmu_commit_zap_page once ]
In __kvm_mmu_free_some_pages() function, the free page number is
getted form 'vcpu->kvm->arch.n_free_mmu_pages' in loop, it will
hinders us to apply kvm_mmu_prepare_zap_page() and kvm_mmu_commit_zap_page()
since kvm_mmu_prepare_zap_page() not free sp.
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
Using kvm_mmu_prepare_zap_page() and kvm_mmu_commit_zap_page() to
split kvm_mmu_zap_page() function, then we can:
- traverse hlist safely
- easily to gather remote tlb flush which occurs during page zapped
Those feature can be used in the later patches
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
Introduce for_each_gfn_sp() and for_each_gfn_indirect_valid_sp() to
cleanup hlist traverseing
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
In kvm_mmu_unprotect_page(), the invalid sp can be skipped
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
|
|
According to SDM, we need check whether single-context INVVPID type is supported
before issuing invvpid instruction.
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Reviewed-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
|
|
Should use linux/uaccess.h instead of asm/uaccess.h
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
|
|
The type of '*new.rmap' is not 'struct page *', fix it
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
|
|
We only support 4 levels EPT pagetable now.
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
|