Commit Graph

13 Commits

Author SHA1 Message Date
Xiao Guangrong e37fa7853c KVM: MMU: audit: inline audit function
inline audit function and little cleanup

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27 11:22:12 +02:00
Xiao Guangrong 0375f7fad9 KVM: MMU: audit: replace mmu audit tracepoint with jump-label
The tracepoint is only used to audit mmu code, it should not be exposed to
user, let us replace it with jump-label.

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-27 11:22:05 +02:00
Jan Kiszka bd80158aff KVM: Clean up and extend rate-limited output
The use of printk_ratelimit is discouraged, replace it with
pr*_ratelimited or __ratelimit. While at it, convert remaining
guest-triggerable printks to rate-limited variants.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-09-25 19:52:43 +03:00
Xiao Guangrong c37079586f KVM: MMU: remove bypass_guest_pf
The idea is from Avi:
| Maybe it's time to kill off bypass_guest_pf=1.  It's not as effective as
| it used to be, since unsync pages always use shadow_trap_nonpresent_pte,
| and since we convert between the two nonpresent_ptes during sync and unsync.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:33 +03:00
Xiao Guangrong b034cf0105 KVM: MMU: audit: allow audit more guests at the same time
It only allows to audit one guest in the system since:
- 'audit_point' is a glob variable
- mmu_audit_disable() is called in kvm_mmu_destroy(), so audit is disabled
  after a guest exited

this patch fix those issues then allow to audit more guests at the same time

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12 11:31:17 +02:00
Nicolas Kaiser 9611c18777 KVM: fix typo in copyright notice
Fix typo in copyright notice.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:53:14 +02:00
Xiao Guangrong 6903074c36 KVM: MMU: audit: check whether have unsync sps after root sync
After root synced, all unsync sps are synced, this patch add a check to make
sure it's no unsync sps in VCPU's page table

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:53:14 +02:00
Xiao Guangrong 38904e1287 KVM: MMU: audit: introduce audit_printk to cleanup audit code
Introduce audit_printk, and record audit point instead audit name

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:53:13 +02:00
Xiao Guangrong 98224bf1d1 KVM: MMU: audit: fix vcpu's spte walking
After nested nested paging, it may using long mode to shadow 32/PAE paging
guest, so this patch fix it

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:53:12 +02:00
Xiao Guangrong 30644b902c KVM: MMU: lower the aduit frequency
The audit is very high overhead, so we need lower the frequency to assure
the guest is running.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:59 +02:00
Xiao Guangrong eb2591865a KVM: MMU: improve spte audit
Both audit_mappings() and audit_sptes_have_rmaps() need to walk vcpu's page
table, so we can do these checking in a spte walking

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:58 +02:00
Xiao Guangrong 49edf87806 KVM: MMU: improve active sp audit
Both audit_rmap() and audit_write_protection() need to walk all active sp, so
we can do these checking in a sp walking

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:57 +02:00
Xiao Guangrong 2f4f337248 KVM: MMU: move audit to a separate file
Move the audit code from arch/x86/kvm/mmu.c to arch/x86/kvm/mmu_audit.c

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:57 +02:00