Merge tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Add powerpc qspinlock implementation optimised for large system
   scalability and paravirt. See the merge message for more details

 - Enable objtool to be built on powerpc to generate mcount locations

 - Use a temporary mm for code patching with the Radix MMU, so the
   writable mapping is restricted to the patching CPU

 - Add an option to build the 64-bit big-endian kernel with the ELFv2
   ABI

 - Sanitise user registers on interrupt entry on 64-bit Book3S

 - Many other small features and fixes

Thanks to Aboorva Devarajan, Angel Iglesias, Benjamin Gray, Bjorn
Helgaas, Bo Liu, Chen Lifu, Christoph Hellwig, Christophe JAILLET,
Christophe Leroy, Christopher M. Riedl, Colin Ian King, Deming Wang,
Disha Goel, Dmitry Torokhov, Finn Thain, Geert Uytterhoeven, Gustavo A.
R. Silva, Haowen Bai, Joel Stanley, Jordan Niethe, Julia Lawall, Kajol
Jain, Laurent Dufour, Li zeming, Miaoqian Lin, Michael Jeanson, Nathan
Lynch, Naveen N. Rao, Nayna Jain, Nicholas Miehlbradt, Nicholas Piggin,
Pali Rohár, Randy Dunlap, Rohan McLure, Russell Currey, Sathvika
Vasireddy, Shaomin Deng, Stephen Kitt, Stephen Rothwell, Thomas
Weißschuh, Tiezhu Yang, Uwe Kleine-König, Xie Shaowen, Xiu Jianfeng,
XueBing Chen, Yang Yingliang, Zhang Jiaming, ruanjinjie, Jessica Yu,
and Wolfram Sang.

* tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (181 commits)
  powerpc/code-patching: Fix oops with DEBUG_VM enabled
  powerpc/qspinlock: Fix 32-bit build
  powerpc/prom: Fix 32-bit build
  powerpc/rtas: mandate RTAS syscall filtering
  powerpc/rtas: define pr_fmt and convert printk call sites
  powerpc/rtas: clean up includes
  powerpc/rtas: clean up rtas_error_log_max initialization
  powerpc/pseries/eeh: use correct API for error log size
  powerpc/rtas: avoid scheduling in rtas_os_term()
  powerpc/rtas: avoid device tree lookups in rtas_os_term()
  powerpc/rtasd: use correct OF API for event scan rate
  powerpc/rtas: document rtas_call()
  powerpc/pseries: unregister VPA when hot unplugging a CPU
  powerpc/pseries: reset the RCU watchdogs after a LPM
  powerpc: Take in account addition CPU node when building kexec FDT
  powerpc: export the CPU node count
  powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state
  powerpc/dts/fsl: Fix pca954x i2c-mux node names
  cxl: Remove unnecessary cxl_pci_window_alignment()
  selftests/powerpc: Fix resource leaks
  ...

1 files changed, 24 insertions, 24 deletions

diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 2f68fb2ee4fc..3f86091e68b3 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -358,7 +358,6 @@ ret_from_mc_except:
 	std	r14,PACA_EXMC+EX_R14(r13);				    \
 	std	r15,PACA_EXMC+EX_R15(r13)
 
-
 /* Core exception code for all exceptions except TLB misses. */
 #define EXCEPTION_COMMON_LVL(n, scratch, excf)				    \
 exc_##n##_common:							    \
@@ -391,10 +390,11 @@ exc_##n##_common:							    \
 	std	r10,_CCR(r1);		/* store orig CR in stackframe */   \
 	std	r9,GPR1(r1);		/* store stack frame back link */   \
 	std	r11,SOFTE(r1);		/* and save it to stackframe */     \
-	std	r12,STACK_FRAME_OVERHEAD-16(r1); /* mark the frame */	    \
+	std	r12,STACK_INT_FRAME_MARKER(r1); /* mark the frame */	    \
 	std	r3,_TRAP(r1);		/* set trap number		*/  \
 	std	r0,RESULT(r1);		/* clear regs->result */	    \
-	SAVE_NVGPRS(r1);
+	SAVE_NVGPRS(r1);						    \
+	SANITIZE_NVGPRS();		/* minimise speculation influence */
 
 #define EXCEPTION_COMMON(n) \
 	EXCEPTION_COMMON_LVL(n, SPRN_SPRG_GEN_SCRATCH, PACA_EXGEN)
@@ -455,7 +455,7 @@ exc_##n##_bad_stack:							    \
 	EXCEPTION_COMMON(trapnum)					\
 	ack(r8);							\
 	CHECK_NAPPING();						\
-	addi	r3,r1,STACK_FRAME_OVERHEAD;				\
+	addi	r3,r1,STACK_INT_FRAME_REGS;				\
 	bl	hdlr;							\
 	b	interrupt_return
 
@@ -504,7 +504,7 @@ __end_interrupts:
 	EXCEPTION_COMMON_CRIT(0x100)
 	bl	special_reg_save
 	CHECK_NAPPING();
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_nmi_exception
 	b	ret_from_crit_except
 
@@ -515,7 +515,7 @@ __end_interrupts:
 	EXCEPTION_COMMON_MC(0x000)
 	bl	special_reg_save
 	CHECK_NAPPING();
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	machine_check_exception
 	b	ret_from_mc_except
 
@@ -570,7 +570,7 @@ __end_interrupts:
 	std	r14,_ESR(r1)
 	ld	r14,PACA_EXGEN+EX_R14(r13)
 	EXCEPTION_COMMON(0x700)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	program_check_exception
 	REST_NVGPRS(r1)
 	b	interrupt_return
@@ -586,7 +586,7 @@ __end_interrupts:
 	beq-	1f
 	bl	load_up_fpu
 	b	fast_interrupt_return
-1:	addi	r3,r1,STACK_FRAME_OVERHEAD
+1:	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	kernel_fp_unavailable_exception
 	b	interrupt_return
 
@@ -606,7 +606,7 @@ BEGIN_FTR_SECTION
 1:
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 #endif
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	altivec_unavailable_exception
 	b	interrupt_return
 
@@ -616,7 +616,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 				BOOKE_INTERRUPT_ALTIVEC_ASSIST,
 				PROLOG_ADDITION_NONE)
 	EXCEPTION_COMMON(0x220)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 #ifdef CONFIG_ALTIVEC
 BEGIN_FTR_SECTION
 	bl	altivec_assist_exception
@@ -643,7 +643,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 	EXCEPTION_COMMON_CRIT(0x9f0)
 	bl	special_reg_save
 	CHECK_NAPPING();
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 #ifdef CONFIG_BOOKE_WDT
 	bl	WatchdogException
 #else
@@ -664,7 +664,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 	NORMAL_EXCEPTION_PROLOG(0xf20, BOOKE_INTERRUPT_AP_UNAVAIL,
 				PROLOG_ADDITION_NONE)
 	EXCEPTION_COMMON(0xf20)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_exception
 	b	interrupt_return
 
@@ -731,7 +731,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 	ld	r14,PACA_EXCRIT+EX_R14(r13)
 	ld	r15,PACA_EXCRIT+EX_R15(r13)
 	EXCEPTION_COMMON_CRIT(0xd00)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	DebugException
 	REST_NVGPRS(r1)
 	b	interrupt_return
@@ -802,7 +802,7 @@ kernel_dbg_exc:
 	ld	r14,PACA_EXDBG+EX_R14(r13)
 	ld	r15,PACA_EXDBG+EX_R15(r13)
 	EXCEPTION_COMMON_DBG(0xd08)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	DebugException
 	REST_NVGPRS(r1)
 	b	interrupt_return
@@ -812,7 +812,7 @@ kernel_dbg_exc:
 				PROLOG_ADDITION_NONE)
 	EXCEPTION_COMMON(0x260)
 	CHECK_NAPPING()
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	/*
 	 * XXX: Returning from performance_monitor_exception taken as a
 	 * soft-NMI (Linux irqs disabled) may be risky to use interrupt_return
@@ -834,7 +834,7 @@ kernel_dbg_exc:
 	EXCEPTION_COMMON_CRIT(0x2a0)
 	bl	special_reg_save
 	CHECK_NAPPING();
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_nmi_exception
 	b	ret_from_crit_except
 
@@ -846,7 +846,7 @@ kernel_dbg_exc:
 	GDBELL_EXCEPTION_PROLOG(0x2c0, BOOKE_INTERRUPT_GUEST_DBELL,
 			        PROLOG_ADDITION_NONE)
 	EXCEPTION_COMMON(0x2c0)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_exception
 	b	interrupt_return
 
@@ -857,7 +857,7 @@ kernel_dbg_exc:
 	EXCEPTION_COMMON_CRIT(0x2e0)
 	bl	special_reg_save
 	CHECK_NAPPING();
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_nmi_exception
 	b	ret_from_crit_except
 
@@ -866,7 +866,7 @@ kernel_dbg_exc:
 	NORMAL_EXCEPTION_PROLOG(0x310, BOOKE_INTERRUPT_HV_SYSCALL,
 			        PROLOG_ADDITION_NONE)
 	EXCEPTION_COMMON(0x310)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_exception
 	b	interrupt_return
 
@@ -875,7 +875,7 @@ kernel_dbg_exc:
 	NORMAL_EXCEPTION_PROLOG(0x320, BOOKE_INTERRUPT_HV_PRIV,
 			        PROLOG_ADDITION_NONE)
 	EXCEPTION_COMMON(0x320)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_exception
 	b	interrupt_return
 
@@ -884,7 +884,7 @@ kernel_dbg_exc:
 	NORMAL_EXCEPTION_PROLOG(0x340, BOOKE_INTERRUPT_LRAT_ERROR,
 			        PROLOG_ADDITION_NONE)
 	EXCEPTION_COMMON(0x340)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	unknown_exception
 	b	interrupt_return
 
@@ -979,7 +979,7 @@ masked_interrupt_book3e_0x2c0:
  * original values stashed away in the PACA
  */
 storage_fault_common:
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	do_page_fault
 	b	interrupt_return
 
@@ -988,7 +988,7 @@ storage_fault_common:
  * continues here.
  */
 alignment_more:
-	addi	r3,r1,STACK_FRAME_OVERHEAD
+	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	alignment_exception
 	REST_NVGPRS(r1)
 	b	interrupt_return
@@ -1069,7 +1069,7 @@ bad_stack_book3e:
 	ZEROIZE_GPR(12)
 	std	r12,0(r11)
 	LOAD_PACA_TOC()
-1:	addi	r3,r1,STACK_FRAME_OVERHEAD
+1:	addi	r3,r1,STACK_INT_FRAME_REGS
 	bl	kernel_bad_stack
 	b	1b