| Message ID | 2cee46969dcad25ccc4b00c80742e21770375e08.1734631969.git.w1benny@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | x86: Add Support for Paging-Write Feature | expand |
diff --git a/xen/arch/x86/include/asm/hvm/vmx/vmx.h b/xen/arch/x86/include/asm/hvm/vmx/vmx.h index f0ec459622..d920de96b7 100644 --- a/xen/arch/x86/include/asm/hvm/vmx/vmx.h +++ b/xen/arch/x86/include/asm/hvm/vmx/vmx.h @@ -34,8 +34,8 @@ typedef union { EPT/VT-d usage */ mfn : 40, /* bits 51:12 - Machine physical frame number */ sa_p2mt : 6, /* bits 57:52 - Software available 2 */ - access : 4, /* bits 61:58 - p2m_access_t */ - _rsvd : 1, /* bit 62 - reserved */ + pw : 1, /* bit 58 - Paging-write access */ + access : 4, /* bits 62:59 - p2m_access_t */ suppress_ve : 1; /* bit 63 - suppress #VE */ }; u64 epte;
From: Petr Beneš <w1benny@gmail.com> The EPT Paging-write feature (when enabled by the TERTIARY_EXEC_EPT_PAGING_WRITE bit) uses bit 58 of the EPT entry to indicate that guest paging may update the page, even if the W access is not set. This patch is a preparation for the EPT Paging-write feature. --- xen/arch/x86/include/asm/hvm/vmx/vmx.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)