From: Brad Smith <brad@comstyle.com>
Subject: powerpc64: filling in a few more HWCAP flags
To: tech@openbsd.org
Date: Sun, 3 May 2026 09:42:33 -0400

Sort the top flags by order in the header.

Fill in some other feature flags I have come across.

PPC_FEATURE2_ARCH_2_07

Noticed in FFmpeg for Power8 VSX code within libswscale and devel/orc
and probably others.

PPC_FEATURE2_HAS_VEC_CRYPTO

OpenSSL, NSS, Nettle, and Botan

All of the crypto libraries check and utilize HW support on POWER.

I do not have any powerpc64 hardware. Could someone please
test this out?


Index: powerpc64/cpu.c
===================================================================
RCS file: /cvs/src/sys/arch/powerpc64/powerpc64/cpu.c,v
retrieving revision 1.30
diff -u -p -u -p -r1.30 cpu.c
--- powerpc64/cpu.c	28 Nov 2024 18:54:36 -0000	1.30
+++ powerpc64/cpu.c	3 May 2026 06:22:53 -0000
@@ -224,15 +224,15 @@ cpu_init_features(void)
 {
 	uint32_t pvr = mfpvr();
 
-	hwcap = PPC_FEATURE_32 | PPC_FEATURE_64 | PPC_FEATURE_HAS_FPU |
-	    PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_ALTIVEC |
+	hwcap = PPC_FEATURE_32 | PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC |
+	    PPC_FEATURE_HAS_FPU | PPC_FEATURE_HAS_MMU |
 	    PPC_FEATURE_HAS_VSX;
 
 	switch (CPU_VERSION(pvr)) {
 	case CPU_IBMPOWER9:
 	case CPU_IBMPOWER9P:
-		hwcap2 |= PPC_FEATURE2_ARCH_3_00;
-		hwcap2 |= PPC_FEATURE2_DARN;
+		hwcap2 |= PPC_FEATURE2_ARCH_2_07 | PPC_FEATURE2_HAS_VEC_CRYPTO |
+		    PPC_FEATURE2_ARCH_3_00 | PPC_FEATURE2_DARN;
 		break;
 	}
 }