From: Michael Neuling <mikey@neuling.org>
To: Paul Mackerras <paulus@ozlabs.org>, linuxppc-dev@ozlabs.org
Subject: Re: [PATCH RFC 0/7] powerpc: Beef up single-stepping/instruction emulation infrastructure
Date: Wed, 23 Aug 2017 19:27:23 +1000 [thread overview]
Message-ID: <1503480443.25055.22.camel@neuling.org> (raw)
In-Reply-To: <1503445683-12011-1-git-send-email-paulus@ozlabs.org>
Paulus,=20
> This patch series extends the code in arch/powerpc/lib/sstep.c so that
> it handles almost all load and store instructions -- all except the
> atomic memory operations (lwat, stwat, etc.).=C2=A0=C2=A0It also makes su=
re that
> we use the largest possible aligned accesses to access memory and that
> we don't access the CPU FP/VMX/VSX registers when they don't contain
> user data.
Do you have any test cases we can put in selftests for this?
> With this, it should be possible to replace the body of the alignment
> interrupt handler with a call to emulate_step() or something quite
> similar.
Exercise for the reader? :-)
Mikey
next prev parent reply other threads:[~2017-08-23 9:27 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-22 23:47 [PATCH RFC 0/7] powerpc: Beef up single-stepping/instruction emulation infrastructure Paul Mackerras
2017-08-22 23:47 ` [PATCH RFC 1/7] powerpc: Extend instruction " Paul Mackerras
2017-08-22 23:47 ` [PATCH RFC 2/7] powerpc: Change analyse_instr so it doesn't modify *regs Paul Mackerras
2017-08-23 9:23 ` Michael Neuling
2017-08-22 23:47 ` [PATCH RFC 3/7] powerpc: Make load/store emulation use larger memory accesses Paul Mackerras
2017-08-22 23:48 ` [PATCH RFC 4/7] powerpc: Emulate FP/vector/VSX loads/stores correctly when regs not live Paul Mackerras
2017-08-22 23:48 ` [PATCH RFC 5/7] powerpc: Handle vector element load/stores in emulation code Paul Mackerras
2017-08-22 23:48 ` [PATCH RFC 6/7] powerpc: Emulate load/store floating double pair instructions Paul Mackerras
2017-08-22 23:48 ` [PATCH RFC 7/7] powerpc: Handle opposite-endian processes in emulation code Paul Mackerras
2017-08-23 9:27 ` Michael Neuling [this message]
2017-08-23 11:42 ` [PATCH RFC 0/7] powerpc: Beef up single-stepping/instruction emulation infrastructure Michael Ellerman
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