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| author | ssmith@localhost.localdomain <ssmith@localhost.localdomain> | 2006-12-11 11:16:29 -0800 |
|---|---|---|
| committer | ssmith@localhost.localdomain <ssmith@localhost.localdomain> | 2006-12-11 11:16:29 -0800 |
| commit | 7a3d8f6e4dd56771a7514624bbace26883a36da7 (patch) | |
| tree | 9d792ae7a6e4a47dc0ab56f13e7d1021360cdba1 /xen/include/asm-x86/shadow.h | |
| parent | 8537fbaeade8b85d8751b2702b0b3e76dabaeff6 (diff) | |
| download | xen-7a3d8f6e4dd56771a7514624bbace26883a36da7.tar.gz xen-7a3d8f6e4dd56771a7514624bbace26883a36da7.tar.bz2 xen-7a3d8f6e4dd56771a7514624bbace26883a36da7.zip | |
[XEN] The shadow FAST_FAULT_PATH optimisation assumes that pages never
transition between mmio and RAM-backed. This isn't true after a
an add_to_physmap memory op. Fix this by just blowing the shadow tables
after every such operation; they're rare enough that the performance
hit is not a concern.
Signed-off-by: Steven Smith <sos22@cam.ac.uk>
Acked-by: Tim Deegan <Tim.Deegan@xensource.com>
Diffstat (limited to 'xen/include/asm-x86/shadow.h')
| -rw-r--r-- | xen/include/asm-x86/shadow.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/include/asm-x86/shadow.h b/xen/include/asm-x86/shadow.h index 78998edea9..f923f662de 100644 --- a/xen/include/asm-x86/shadow.h +++ b/xen/include/asm-x86/shadow.h @@ -540,6 +540,9 @@ extern int shadow_remove_write_access(struct vcpu *v, mfn_t readonly_mfn, * Returns non-zero if we need to flush TLBs. */ extern int shadow_remove_all_mappings(struct vcpu *v, mfn_t target_mfn); +/* Remove all mappings from the shadows. */ +extern void shadow_blow_tables(struct domain *d); + void shadow_remove_all_shadows_and_parents(struct vcpu *v, mfn_t gmfn); /* This is a HVM page that we thing is no longer a pagetable. |