Date: Tue, 14 Feb 2012 10:36:46 GMT From: Robert Watson <rwatson@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 206264 for review Message-ID: <201202141036.q1EAak1L035294@skunkworks.freebsd.org>
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http://p4web.freebsd.org/@@206264?ac=10 Change 206264 by rwatson@rwatson_svr_ctsrd_mipsbuild on 2012/02/14 10:36:03 On 64-bit MIPS CPUs, set 64-bit mode for the supervisor ring, not just the kernel and user rings. On traditional 64-bit MIPS processors, this isn't an issue, as FreeBSD doesn't use the supervisor ring, so this becomes a no-op. However, CHERI rejects attempts to clear 64-bit mode flags for rings, including SX, throwing an exception, as 32-bit mode is not supported for any ring. Affected files ... .. //depot/projects/ctsrd/beribsd/src/sys/mips/mips/locore.S#2 edit Differences ... ==== //depot/projects/ctsrd/beribsd/src/sys/mips/mips/locore.S#2 (text+ko) ==== @@ -118,7 +118,7 @@ */ li t1, MIPS_SR_COP_1_BIT #ifdef __mips_n64 - or t1, MIPS_SR_KX | MIPS_SR_UX + or t1, MIPS_SR_KX | MIPS_SR_SX | MIPS_SR_UX #endif #endif /*
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