Changeset 46929 in vbox for trunk/src/VBox/VMM

Timestamp:

Jul 3, 2013 12:46:04 PM (12 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

86934

Message:

VMM/HMR0Mixed: A couple of missed skip LDTR, TR restoration in the assembly code.

File:

• trunk/src/VBox/VMM/VMMR0/HMR0Mixed.mac (modified) (6 diffs)

trunk/src/VBox/VMM/VMMR0/HMR0Mixed.mac

@@ -544 +544 @@
     mov     qword [xDI + CPUMCTX.edi], rax
 
+%ifndef VMX_SKIP_LDTR_TR
     ; Restore TSS selector; must mark it as not busy before using ltr (!)
     ; ASSUME that this is supposed to be 'BUSY'. (saves 20-30 ticks on the T42p).
@@ -559 +560 @@
     pop     xAX         ; Saved LDTR
     lldt    ax
+%endif
 
     pop     xSI         ; pCtx (needed in rsi by the macros below)
@@ -622 +624 @@
 %endif
 
+%ifndef VMX_SKIP_LDTR_TR
     ; Restore TSS selector; must mark it as not busy before using ltr (!)
     ; ASSUME that this is supposed to be 'BUSY'. (saves 20-30 ticks on the T42p).
@@ -637 +640 @@
     pop     xAX         ; Saved LDTR
     lldt    ax
+%endif
 
     pop     xSI         ; pCtx (needed in rsi by the macros below)
@@ -674 +678 @@
 %endif
 
+%ifndef VMX_SKIP_LDTR_TR
     ; Restore TSS selector; must mark it as not busy before using ltr (!)
     ; ASSUME that this is supposed to be 'BUSY'. (saves 20-30 ticks on the T42p).
@@ -689 +694 @@
     pop     xAX         ; Saved LDTR
     lldt    ax
+%endif
 
     pop     xSI         ; pCtx (needed in rsi by the macros below).