Merge tag 'powerpc-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Add support for syscall stack randomization

 - Add support for atomic operations to the 32 & 64-bit BPF JIT

 - Full support for KASAN on 64-bit Book3E

 - Add a watchdog driver for the new PowerVM hypervisor watchdog

 - Add a number of new selftests for the Power10 PMU support

 - Add a driver for the PowerVM Platform KeyStore

 - Increase the NMI watchdog timeout during live partition migration, to
   avoid timeouts due to increased memory access latency

 - Add support for using the 'linux,pci-domain' device tree property for
   PCI domain assignment

 - Many other small features and fixes

Thanks to Alexey Kardashevskiy, Andy Shevchenko, Arnd Bergmann, Athira
Rajeev, Bagas Sanjaya, Christophe Leroy, Erhard Furtner, Fabiano Rosas,
Greg Kroah-Hartman, Greg Kurz, Haowen Bai, Hari Bathini, Jason A.
Donenfeld, Jason Wang, Jiang Jian, Joel Stanley, Juerg Haefliger, Kajol
Jain, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Masahiro Yamada,
Maxime Bizon, Miaoqian Lin, Murilo Opsfelder Araújo, Nathan Lynch,
Naveen N.  Rao, Nayna Jain, Nicholas Piggin, Ning Qiang, Pali Rohár,
Petr Mladek, Rashmica Gupta, Sachin Sant, Scott Cheloha, Segher
Boessenkool, Stephen Rothwell, Uwe Kleine-König, Wolfram Sang, Xiu
Jianfeng, and Zhouyi Zhou.

* tag 'powerpc-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (191 commits)
  powerpc/64e: Fix kexec build error
  EDAC/ppc_4xx: Include required of_irq header directly
  powerpc/pci: Fix PHB numbering when using opal-phbid
  powerpc/64: Init jump labels before parse_early_param()
  selftests/powerpc: Avoid GCC 12 uninitialised variable warning
  powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address
  powerpc/xive: Fix refcount leak in xive_get_max_prio
  powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader
  powerpc/perf: Include caps feature for power10 DD1 version
  powerpc: add support for syscall stack randomization
  powerpc: Move system_call_exception() to syscall.c
  powerpc/powernv: rename remaining rng powernv_ functions to pnv_
  powerpc/powernv/kvm: Use darn for H_RANDOM on Power9
  powerpc/powernv: Avoid crashing if rng is NULL
  selftests/powerpc: Fix matrix multiply assist test
  powerpc/signal: Update comment for clarity
  powerpc: make facility_unavailable_exception 64s
  powerpc/platforms/83xx/suspend: Remove write-only global variable
  powerpc/platforms/83xx/suspend: Prevent unloading the driver
  powerpc/platforms/83xx/suspend: Reorder to get rid of a forward declaration
  ...

1 files changed, 47 insertions, 16 deletions

diff --git a/tools/testing/selftests/powerpc/include/basic_asm.h b/tools/testing/selftests/powerpc/include/basic_asm.h
index 886dc026fe7a..26cde8ea1f49 100644
--- a/tools/testing/selftests/powerpc/include/basic_asm.h
+++ b/tools/testing/selftests/powerpc/include/basic_asm.h
@@ -5,6 +5,16 @@
 #include <ppc-asm.h>
 #include <asm/unistd.h>
 
+#ifdef __powerpc64__
+#define PPC_LL		ld
+#define PPC_STL		std
+#define PPC_STLU	stdu
+#else
+#define PPC_LL		lwz
+#define PPC_STL		stw
+#define PPC_STLU	stwu
+#endif
+
 #define LOAD_REG_IMMEDIATE(reg, expr) \
 	lis	reg, (expr)@highest;	\
 	ori	reg, reg, (expr)@higher;	\
@@ -14,16 +24,20 @@
 
 /*
  * Note: These macros assume that variables being stored on the stack are
- * doublewords, while this is usually the case it may not always be the
+ * sizeof(long), while this is usually the case it may not always be the
  * case for each use case.
  */
+#ifdef  __powerpc64__
+
+// ABIv2
 #if defined(_CALL_ELF) && _CALL_ELF == 2
 #define STACK_FRAME_MIN_SIZE 32
 #define STACK_FRAME_TOC_POS  24
 #define __STACK_FRAME_PARAM(_param)  (32 + ((_param)*8))
 #define __STACK_FRAME_LOCAL(_num_params, _var_num)  \
 	((STACK_FRAME_PARAM(_num_params)) + ((_var_num)*8))
-#else
+
+#else // ABIv1 below
 #define STACK_FRAME_MIN_SIZE 112
 #define STACK_FRAME_TOC_POS  40
 #define __STACK_FRAME_PARAM(i)  (48 + ((i)*8))
@@ -34,7 +48,24 @@
  */
 #define __STACK_FRAME_LOCAL(_num_params, _var_num)  \
 	(112 + ((_var_num)*8))
-#endif
+
+
+#endif // ABIv2
+
+// Common 64-bit
+#define STACK_FRAME_LR_POS   16
+#define STACK_FRAME_CR_POS   8
+
+#else // 32-bit below
+
+#define STACK_FRAME_MIN_SIZE 16
+#define STACK_FRAME_LR_POS   4
+
+#define __STACK_FRAME_PARAM(_param)  (STACK_FRAME_MIN_SIZE + ((_param)*4))
+#define __STACK_FRAME_LOCAL(_num_params, _var_num)  \
+	((STACK_FRAME_PARAM(_num_params)) + ((_var_num)*4))
+
+#endif // __powerpc64__
 
 /* Parameter x saved to the stack */
 #define STACK_FRAME_PARAM(var)    __STACK_FRAME_PARAM(var)
@@ -42,8 +73,6 @@
 /* Local variable x saved to the stack after x parameters */
 #define STACK_FRAME_LOCAL(num_params, var)    \
 	__STACK_FRAME_LOCAL(num_params, var)
-#define STACK_FRAME_LR_POS   16
-#define STACK_FRAME_CR_POS   8
 
 /*
  * It is very important to note here that _extra is the extra amount of
@@ -56,19 +85,21 @@
  * preprocessed incorrectly, hence r0.
  */
 #define PUSH_BASIC_STACK(_extra) \
-	mflr	r0; \
-	std	r0, STACK_FRAME_LR_POS(%r1); \
-	stdu	%r1, -(_extra + STACK_FRAME_MIN_SIZE)(%r1); \
-	mfcr	r0; \
-	stw	r0, STACK_FRAME_CR_POS(%r1); \
-	std	%r2, STACK_FRAME_TOC_POS(%r1);
+	mflr	 r0; \
+	PPC_STL	 r0, STACK_FRAME_LR_POS(%r1); \
+	PPC_STLU %r1, -(((_extra + 15) & ~15) + STACK_FRAME_MIN_SIZE)(%r1);
 
 #define POP_BASIC_STACK(_extra) \
-	ld	%r2, STACK_FRAME_TOC_POS(%r1); \
-	lwz	r0, STACK_FRAME_CR_POS(%r1); \
-	mtcr	r0; \
-	addi	%r1, %r1, (_extra + STACK_FRAME_MIN_SIZE); \
-	ld	r0, STACK_FRAME_LR_POS(%r1); \
+	addi	%r1, %r1, (((_extra + 15) & ~15) + STACK_FRAME_MIN_SIZE); \
+	PPC_LL	r0, STACK_FRAME_LR_POS(%r1); \
 	mtlr	r0;
 
+.macro OP_REGS op, reg_width, start_reg, end_reg, base_reg, base_reg_offset=0, skip=0
+	.set i, \start_reg
+	.rept (\end_reg - \start_reg + 1)
+	\op	i, (\reg_width * (i - \skip) + \base_reg_offset)(\base_reg)
+	.set i, i + 1
+	.endr
+.endm
+
 #endif /* _SELFTESTS_POWERPC_BASIC_ASM_H */