Displaying 8 results from an estimated 8 matches for "mvcp".
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2007 Apr 18
0
[patch 2/9] Guest page hinting: unused / free pages on s390.
...nux-2.6/arch/s390/lib/uaccess64.S linux-2.6-patched/arch/s390/lib/uaccess64.S
--- linux-2.6/arch/s390/lib/uaccess64.S 2006-09-01 12:49:25.000000000 +0200
+++ linux-2.6-patched/arch/s390/lib/uaccess64.S 2006-09-01 12:49:36.000000000 +0200
@@ -20,14 +20,14 @@
__copy_from_user_asm:
slgr %r0,%r0
0: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1f
+7: jnz 1f
slgr %r2,%r2
br %r14
1: la %r2,256(%r2)
la %r4,256(%r4)
aghi %r3,-256
2: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1b
+8: jnz 1b
3: slgr %r2,%r2
br %r14
4: lghi %r0,-4096
@@ -39,13 +39,16 @@ __copy_from_user_asm:
jnh 6f # no, the current page faulte...
2007 Apr 18
0
[patch 2/9] Guest page hinting: unused / free pages on s390.
...nux-2.6/arch/s390/lib/uaccess64.S linux-2.6-patched/arch/s390/lib/uaccess64.S
--- linux-2.6/arch/s390/lib/uaccess64.S 2006-09-01 12:49:25.000000000 +0200
+++ linux-2.6-patched/arch/s390/lib/uaccess64.S 2006-09-01 12:49:36.000000000 +0200
@@ -20,14 +20,14 @@
__copy_from_user_asm:
slgr %r0,%r0
0: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1f
+7: jnz 1f
slgr %r2,%r2
br %r14
1: la %r2,256(%r2)
la %r4,256(%r4)
aghi %r3,-256
2: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1b
+8: jnz 1b
3: slgr %r2,%r2
br %r14
4: lghi %r0,-4096
@@ -39,13 +39,16 @@ __copy_from_user_asm:
jnh 6f # no, the current page faulte...
2007 Apr 18
0
[patch 9/9] Guest page hinting: full s390 support.
...he block validity
+ * exception.
+ */
+ address = S390_lowcore.trans_exc_code & __FAIL_ADDR_MASK;
+ page = pfn_to_page(address >> PAGE_SHIFT);
+
+ /*
+ * Check for the special case of a discard fault in
+ * copy_{from,to}_user. User copy is done using the
+ * two special instructions mvcp/mvcs.
+ */
+ if (!(regs->psw.mask & PSW_MASK_PSTATE)) {
+ switch (*(unsigned char *) regs->psw.addr) {
+ case 0xda: /* mvcp */
+ fixup_user_copy(regs, address,
+ *(__u16 *)(regs->psw.addr + 2));
+ break;
+ case 0xdb: /* mvcs */
+ fixup_user_copy(regs, address,
+ *(__u...
2007 Apr 18
0
[patch 9/9] Guest page hinting: full s390 support.
...he block validity
+ * exception.
+ */
+ address = S390_lowcore.trans_exc_code & __FAIL_ADDR_MASK;
+ page = pfn_to_page(address >> PAGE_SHIFT);
+
+ /*
+ * Check for the special case of a discard fault in
+ * copy_{from,to}_user. User copy is done using the
+ * two special instructions mvcp/mvcs.
+ */
+ if (!(regs->psw.mask & PSW_MASK_PSTATE)) {
+ switch (*(unsigned char *) regs->psw.addr) {
+ case 0xda: /* mvcp */
+ fixup_user_copy(regs, address,
+ *(__u16 *)(regs->psw.addr + 2));
+ break;
+ case 0xdb: /* mvcs */
+ fixup_user_copy(regs, address,
+ *(__u...
2007 Jun 28
6
[patch 0/6] resend: guest page hinting version 5.
Greetings,
after Carsten pitched CMM2 on the kvm mini summit here is a repost
of version 5 of the guest page hinting patches. The code is still
the same but has been adapted to the latest git level.
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
2007 Jun 28
6
[patch 0/6] resend: guest page hinting version 5.
Greetings,
after Carsten pitched CMM2 on the kvm mini summit here is a repost
of version 5 of the guest page hinting patches. The code is still
the same but has been adapted to the latest git level.
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
2007 May 11
6
[patch 0/6] [rfc] guest page hinting version 5
After way to many months here is the fifth version of the guest page
hinting patches. Compared to version four a few improvements have been
added:
- Avoid page_host_discards() calls outside of page-states.h
- The discard list is now implemented via the page_free_discarded
hook and architecture specific code.
- PG_state_change page flag has been replaced with architecture
specficic
2007 May 11
6
[patch 0/6] [rfc] guest page hinting version 5
After way to many months here is the fifth version of the guest page
hinting patches. Compared to version four a few improvements have been
added:
- Avoid page_host_discards() calls outside of page-states.h
- The discard list is now implemented via the page_free_discarded
hook and architecture specific code.
- PG_state_change page flag has been replaced with architecture
specficic