Displaying 13 results from an estimated 13 matches for "__pvop_vcall".
2007 Apr 18
0
[PATCH] paravirt_ops: Clean up paravirt patchable wrappers
...: paravirt_type(op), \
+ paravirt_clobber(CLBR_ANY), \
+ ##__VA_ARGS__ \
: "memory", "cc"); \
- __ret = (__rettype)__tmp; \
+ __ret = (rettype)__eax; \
} \
__ret; \
})
-#define PVOP_VCALL0(__op) \
+#define __PVOP_VCALL(op, pre, post, ...) \
({ \
unsigned long __eax, __edx, __ecx; \
- asm volatile(paravirt_alt(PARAVIRT_CALL) \
+ asm volatile(pre \
+ paravirt_alt(PARAVIRT_CALL) \
+ post \
: "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
-...
2007 Apr 18
0
[PATCH] paravirt_ops: Clean up paravirt patchable wrappers
...: paravirt_type(op), \
+ paravirt_clobber(CLBR_ANY), \
+ ##__VA_ARGS__ \
: "memory", "cc"); \
- __ret = (__rettype)__tmp; \
+ __ret = (rettype)__eax; \
} \
__ret; \
})
-#define PVOP_VCALL0(__op) \
+#define __PVOP_VCALL(op, pre, post, ...) \
({ \
unsigned long __eax, __edx, __ecx; \
- asm volatile(paravirt_alt(PARAVIRT_CALL) \
+ asm volatile(pre \
+ paravirt_alt(PARAVIRT_CALL) \
+ post \
: "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
-...
2007 Dec 20
6
[PATCH 0/15] adjust pvops to accomodate its x86_64 variant
Hi folks,
With this series, the bulk of the work of pvops64 is done.
Here, I integrate most of the paravirt.c and paravirt.h files, making
them applicable to both architectures.
CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page
table integration (patches currently being worked on by Jeremy).
Enjoy
2007 Dec 20
6
[PATCH 0/15] adjust pvops to accomodate its x86_64 variant
Hi folks,
With this series, the bulk of the work of pvops64 is done.
Here, I integrate most of the paravirt.c and paravirt.h files, making
them applicable to both architectures.
CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page
table integration (patches currently being worked on by Jeremy).
Enjoy
2015 Apr 30
0
[PATCH 4/6] x86: introduce new pvops function spin_unlock
...avirt_patch_ignore(unsigned len);
unsigned paravirt_patch_call(void *insnbuf,
const void *target, u16 tgt_clobbers,
@@ -620,6 +622,12 @@ int paravirt_disable_iospace(void);
__PVOP_CALL(rettype, op, "", "", PVOP_CALL_ARG1(arg1))
#define PVOP_VCALL1(op, arg1) \
__PVOP_VCALL(op, "", "", PVOP_CALL_ARG1(arg1))
+/*
+ * Using LOCK_PREFIX_HERE works because the lock prefix or it's replacement
+ * is checked to be present before being replaced.
+ */
+#define PVOP_VCALL1_LOCK(op, arg1) \
+ __PVOP_VCALL(op, LOCK_PREFIX_HERE, "", PVOP_CALL_...
2017 Oct 04
1
[PATCH 02/13] x86/paravirt: Fix output constraint macro names
...#define __PVOP_CALLEESAVE(rettype, op, pre, post, ...) \
____PVOP_CALL(rettype, op.func, CLBR_RET_REG, \
- PVOP_CALLEE_CLOBBERS, , \
+ PVOP_CALLEE_OUTPUTS, , \
pre, post, ##__VA_ARGS__)
@@ -576,13 +576,13 @@ int paravirt_disable_iospace(void);
})
#define __PVOP_VCALL(op, pre, post, ...) \
- ____PVOP_VCALL(op, CLBR_ANY, PVOP_VCALL_CLOBBERS, \
+ ____PVOP_VCALL(op, CLBR_ANY, PVOP_VCALL_OUTPUTS, \
VEXTRA_CLOBBERS, \
pre, post, ##__VA_ARGS__)
#define __PVOP_VCALLEESAVE(op, pre, post, ...) \
____PVOP_VCALL(op.func, CLBR_RET_REG,...
2017 Oct 04
1
[PATCH 11/13] x86/paravirt: Add paravirt alternatives infrastructure
..._ALT_CALL(rettype, native, op, CLBR_ANY, \
+ PVOP_CALL_OUTPUTS, EXTRA_CLOBBERS, \
+ ##__VA_ARGS__)
+
+#define __PVOP_ALT_CALLEESAVE(rettype, native, op, ...) \
+ ____PVOP_ALT_CALL(rettype, native, op.func, CLBR_RET_REG, \
+ PVOP_CALLEE_OUTPUTS, , ##__VA_ARGS__)
#define ____PVOP_VCALL(op, clbr, call_clbr, extra_clbr, pre, post, ...) \
({ \
@@ -583,28 +637,58 @@ int paravirt_disable_iospace(void);
PVOP_VCALLEE_OUTPUTS, , \
pre, post, ##__VA_ARGS__)
+#define ____PVOP_ALT_VCALL(native, op, clbr, call_clbr, extra_clbr, \
+ ...) \
+({...
2007 Apr 19
3
[RFC, PATCH 1/5] Paravirt_ops full patching.patch
...\
+ "lea 8(%%esp),%%esp;", \
+ "0" ((u32)(arg1)), "1" ((u32)(arg2)), \
+ "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)), \
+ [_arg5] "mr" ((u32)(arg5)))
+#define PVOP_VCALL5(op, arg1, arg2, arg3, arg4, arg5) \
+ __PVOP_VCALL(op, \
+ "push %[_arg5]; push %[_arg4];", \
+ "lea 8(%%esp),%%esp;", \
+ "0" ((u32)(arg1)), "1" ((u32)(arg2)), \
+ "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)), \
+ [_arg5] "mr" ((u32)(arg5)))...
2007 Apr 19
3
[RFC, PATCH 1/5] Paravirt_ops full patching.patch
...\
+ "lea 8(%%esp),%%esp;", \
+ "0" ((u32)(arg1)), "1" ((u32)(arg2)), \
+ "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)), \
+ [_arg5] "mr" ((u32)(arg5)))
+#define PVOP_VCALL5(op, arg1, arg2, arg3, arg4, arg5) \
+ __PVOP_VCALL(op, \
+ "push %[_arg5]; push %[_arg4];", \
+ "lea 8(%%esp),%%esp;", \
+ "0" ((u32)(arg1)), "1" ((u32)(arg2)), \
+ "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)), \
+ [_arg5] "mr" ((u32)(arg5)))...
2015 Apr 30
12
[PATCH 0/6] x86: reduce paravirtualized spinlock overhead
Paravirtualized spinlocks produce some overhead even if the kernel is
running on bare metal. The main reason are the more complex locking
and unlocking functions. Especially unlocking is no longer just one
instruction but so complex that it is no longer inlined.
This patch series addresses this issue by adding two more pvops
functions to reduce the size of the inlined spinlock functions. When
2015 Apr 30
12
[PATCH 0/6] x86: reduce paravirtualized spinlock overhead
Paravirtualized spinlocks produce some overhead even if the kernel is
running on bare metal. The main reason are the more complex locking
and unlocking functions. Especially unlocking is no longer just one
instruction but so complex that it is no longer inlined.
This patch series addresses this issue by adding two more pvops
functions to reduce the size of the inlined spinlock functions. When
2017 Oct 04
31
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
This changes the pv ops code generation to more closely match reality.
For example, instead of:
callq *0xffffffff81e3a400 (pv_irq_ops.save_fl)
vmlinux will now show:
pushfq
pop %rax
nop
nop
nop
nop
nop
which is what the runtime version of the code will show in most cases.
This idea was suggested by Andy Lutomirski.
The benefits are:
- For the most common runtime cases
2017 Oct 04
31
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
This changes the pv ops code generation to more closely match reality.
For example, instead of:
callq *0xffffffff81e3a400 (pv_irq_ops.save_fl)
vmlinux will now show:
pushfq
pop %rax
nop
nop
nop
nop
nop
which is what the runtime version of the code will show in most cases.
This idea was suggested by Andy Lutomirski.
The benefits are:
- For the most common runtime cases