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| author | Keir Fraser <keir.fraser@citrix.com> | 2008-01-08 09:57:59 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-01-08 09:57:59 +0000 |
| commit | c741a6246754635ac808b74ee5b0bd51bdfccaa8 (patch) | |
| tree | 1902e612c9ce4edaec60535a6a3dda75db1dae85 | |
| parent | ecd285a056ef7557ca2ba507728e1b8e2d6ef0b2 (diff) | |
| download | xen-c741a6246754635ac808b74ee5b0bd51bdfccaa8.tar.gz xen-c741a6246754635ac808b74ee5b0bd51bdfccaa8.tar.bz2 xen-c741a6246754635ac808b74ee5b0bd51bdfccaa8.zip | |
x86, hvm: Add a perf counter for CR0.WP=0 emulation.
Signed-off-by Kevin Tian <kevin.tian@intel.com>
| -rw-r--r-- | xen/arch/x86/mm/shadow/multi.c | 3 | ||||
| -rw-r--r-- | xen/include/asm-x86/perfc_defn.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/xen/arch/x86/mm/shadow/multi.c b/xen/arch/x86/mm/shadow/multi.c index 4777e54080..1c4e7fad70 100644 --- a/xen/arch/x86/mm/shadow/multi.c +++ b/xen/arch/x86/mm/shadow/multi.c @@ -2899,7 +2899,10 @@ static int sh_page_fault(struct vcpu *v, if ( is_hvm_domain(d) && unlikely(!hvm_wp_enabled(v)) && regs->error_code == (PFEC_write_access|PFEC_page_present) ) + { + perfc_incr(shadow_fault_emulate_wp); goto emulate; + } perfc_incr(shadow_fault_fixed); d->arch.paging.log_dirty.fault_count++; diff --git a/xen/include/asm-x86/perfc_defn.h b/xen/include/asm-x86/perfc_defn.h index eb18b5fe38..460c1f2b58 100644 --- a/xen/include/asm-x86/perfc_defn.h +++ b/xen/include/asm-x86/perfc_defn.h @@ -56,6 +56,7 @@ PERFCOUNTER(shadow_fault_emulate_read, "shadow_fault emulates a read") PERFCOUNTER(shadow_fault_emulate_write, "shadow_fault emulates a write") PERFCOUNTER(shadow_fault_emulate_failed, "shadow_fault emulator fails") PERFCOUNTER(shadow_fault_emulate_stack, "shadow_fault emulate stack write") +PERFCOUNTER(shadow_fault_emulate_wp, "shadow_fault emulate for CR0.WP=0") PERFCOUNTER(shadow_fault_mmio, "shadow_fault handled as mmio") PERFCOUNTER(shadow_fault_fixed, "shadow_fault fixed fault") PERFCOUNTER(shadow_ptwr_emulate, "shadow causes ptwr to emulate") |