From: "Andreas Färber" <afaerber@suse.de>
To: Richard Henderson <rth@twiddle.net>
Cc: blauwirbel@gmail.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 04/13] tcg-sparc: Assume v9 cpu always, i.e. force v8plus in 32-bit mode.
Date: Mon, 17 Sep 2012 18:04:23 +0200 [thread overview]
Message-ID: <50574A07.5030009@suse.de> (raw)
In-Reply-To: <1347895732-22212-5-git-send-email-rth@twiddle.net>
Am 17.09.2012 17:28, schrieb Richard Henderson:
> Current code doesn't actually work in 32-bit mode at all. Since
> no one really noticed, drop the complication of v7 and v8 cpus.
> Eliminate the --sparc_cpu configure option and standardize macro
> testing on TCG_TARGET_REG_BITS / HOST_LONG_BITS
>
> Also, a bug fix: don't MAP_FIXED right on top of the program
> address space set in sparc64.ld.
>
> Signed-off-by: Richard Henderson <rth@twiddle.net>
Without knowing the code, this does not strike me as the best of ideas:
SPARC CPUs are rather uncommon these days, so being able to emulate it
in sparc32-softmmu may be helpful for keeping it working.
Could you elaborate on what exactly is broken and what would need to be
done as alternative?
The MAP_FIXED bugfix (keyword "also") should probably go into its own
patch either way.
Regards,
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
next prev parent reply other threads:[~2012-09-17 16:04 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-16 0:05 [Qemu-devel] [PATCH] fix gcc warnings when RESERVED_VA is 0 Mike Frysinger
2012-09-16 9:58 ` Peter Maydell
2012-09-16 10:25 ` Blue Swirl
2012-09-17 15:28 ` [Qemu-devel] [PATCH v2 00/13] Sparc TCG cleanup Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 01/13] linux-user: Use memcpy in get_user/put_user Richard Henderson
2012-09-17 15:35 ` Peter Maydell
2012-09-17 15:40 ` Richard Henderson
2012-09-17 16:06 ` Peter Maydell
2012-09-17 15:28 ` [Qemu-devel] [PATCH 02/13] tcg-sparc: Hack in qemu_ld/st64 for 32-bit Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 03/13] tcg-sparc: Fix ADDX opcode Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 04/13] tcg-sparc: Assume v9 cpu always, i.e. force v8plus in 32-bit mode Richard Henderson
2012-09-17 16:04 ` Andreas Färber [this message]
2012-09-17 17:05 ` Richard Henderson
2012-09-17 19:25 ` Blue Swirl
2012-09-17 21:52 ` Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 05/13] tcg-sparc: Fix qemu_ld/st to handle 32-bit host Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 06/13] tcg-sparc: Support GUEST_BASE Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 07/13] tcg-sparc: Change AREG0 in generated code to %i0 Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 08/13] tcg-sparc: Clean up cruft stemming from attempts to use global registers Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 09/13] tcg-sparc: Mask shift immediates to avoid illegal insns Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 10/13] tcg-sparc: Use defines for temporaries Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 11/13] tcg-sparc: Add %g/%o registers to alloc_order Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 12/13] tcg-sparc: Fix and enable direct TB chaining Richard Henderson
2012-09-17 15:28 ` [Qemu-devel] [PATCH 13/13] tcg: Fix !USE_DIRECT_JUMP Richard Henderson
2012-09-17 15:50 ` Andreas Färber
2012-09-21 20:21 ` Stefan Weil
2012-09-21 10:28 ` Aurelien Jarno
2012-09-21 18:16 ` Aurelien Jarno
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