powerpc fixes for 6.7 #4

- Fix stack teardown in ftrace_no_trace, seen as crashes doing CPU hotplug
    while ftrace is active.
 
 Thanks to: Naveen N Rao
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmV1AeMTHG1wZUBlbGxl
 cm1hbi5pZC5hdQAKCRBR6+o8yOGlgB8KEACfm0gd6Z0lSkT8dOO+/aw6SdVUhDHy
 eX0rJt5YSQ14Ob3V+SWOqAa2POkPSs+55MKyB5VmVi2Y3cbWYeXCrLyBEeDFL9Nz
 wFSPI8GhqpAOaDwkmvO7owHfXBQTScmKFBAqCMuoIw+wwGphw+AWiTcCfPkO0r6H
 m/xZ3duc14Jv7wqDTP3FvmYvrPS5ENf6Wt+nqongURCjxKdaTiZr1gbTISq4er6Q
 sQnnX6rLBDQi2aBJVPDV3yJtUTtAZ/MnUyy/fVQVt44hA+BYwRCPlW9j07bC/R+X
 pC3upUHjxNFCT1ePe/pd4yzCZdjGqIx7nTrxyxm/UMRaI7KOLTybw+DEATh2jfMY
 HRtYrs7JEX6qzosk14BfHygZZzXRaVkYzj3n3JOuLJY95O1d2YJBJW+1WyIwozCD
 RFdQf3bDmVAskfMYdfasmFjHAzOtBe7TJUyLIZErfWFltbDx9g6fsBRw3B1hO4Im
 IpcSg7tLhPdu7QuqY7asEyTD0Eg7HoLTCFn42RrfJPQkTT0Zvkq281F/zKWUQTSg
 lX+eVDpPkODY7nnVdkOJ9lwbC/Py4A1tvZ+KgnaHi9fGYKwKzp4HBvuDTeYMn740
 OPJ6Q+e48TgmMflM6ln/FGZFMCUxc5Nzu6taQ8bmmXv+IdHoZFG2uosh0RKux912
 JEgbJFcXk1slvw==
 =RLG4
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-6.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - Fix stack teardown in ftrace_no_trace, seen as crashes doing CPU
   hotplug while ftrace is active.

   Thanks to Naveen N Rao.

* tag 'powerpc-6.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/ftrace: Fix stack teardown in ftrace_no_trace

arch/powerpc/kernel/trace/ftrace_entry.S

@@ -62,7 +62,7 @@
 	.endif
 
 	/* Save previous stack pointer (r1) */
-	addi	r8, r1, SWITCH_FRAME_SIZE
+	addi	r8, r1, SWITCH_FRAME_SIZE+STACK_FRAME_MIN_SIZE
 	PPC_STL	r8, GPR1(r1)
 
 	.if \allregs == 1
@@ -182,7 +182,7 @@ ftrace_no_trace:
 	mflr	r3
 	mtctr	r3
 	REST_GPR(3, r1)
-	addi	r1, r1, SWITCH_FRAME_SIZE
+	addi	r1, r1, SWITCH_FRAME_SIZE+STACK_FRAME_MIN_SIZE
 	mtlr	r0
 	bctr
 #endif