diff options
| author | Keir Fraser <keir.fraser@citrix.com> | 2008-03-27 10:52:54 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-03-27 10:52:54 +0000 |
| commit | 8c8df59519d782fc31b41e7d1ec276c105e4eb4a (patch) | |
| tree | ea91fd4236aa91a1c1f1d74ebf6a76c8ebf567d9 /xen/include/asm-x86/hvm/vcpu.h | |
| parent | 54e034136e4c4655f728edb332fb35195f1a3f13 (diff) | |
| download | xen-8c8df59519d782fc31b41e7d1ec276c105e4eb4a.tar.gz xen-8c8df59519d782fc31b41e7d1ec276c105e4eb4a.tar.bz2 xen-8c8df59519d782fc31b41e7d1ec276c105e4eb4a.zip | |
x86_emulate: On HVM MMIO emulation, cache the gva->pfn mapping for the
MMIO page. Speeds up Windows installation by about 20 percent.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Diffstat (limited to 'xen/include/asm-x86/hvm/vcpu.h')
| -rw-r--r-- | xen/include/asm-x86/hvm/vcpu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/xen/include/asm-x86/hvm/vcpu.h b/xen/include/asm-x86/hvm/vcpu.h index 0c76551575..d3281d20dc 100644 --- a/xen/include/asm-x86/hvm/vcpu.h +++ b/xen/include/asm-x86/hvm/vcpu.h @@ -80,6 +80,15 @@ struct hvm_vcpu { /* I/O request in flight to device model. */ enum hvm_io_state io_state; unsigned long io_data; + + /* + * HVM emulation: + * Virtual address @mmio_gva maps to MMIO physical frame @mmio_gpfn. + * The latter is known to be an MMIO frame (not RAM). + * This translation is only valid if @mmio_gva is non-zero. + */ + unsigned long mmio_gva; + unsigned long mmio_gpfn; }; #endif /* __ASM_X86_HVM_VCPU_H__ */ |