From: Richard Henderson <rth@twiddle.net>
To: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Fwd: [PATCH v2.5] fixup! linux-user/sh4: Notice gUSA regions during signal delivery
Date: Fri, 7 Jul 2017 09:00:15 -1000 [thread overview]
Message-ID: <6894e2eb-2ca2-cf92-80fc-b715996aba3e@twiddle.net> (raw)
In-Reply-To: <CAD-reDZ5RUnTm3JZG7rQ_dDSE41KJ_HoARQuiCLpT0wkdcowAQ@mail.gmail.com>
On 07/07/2017 07:57 AM, Richard Henderson wrote:
> + /* ??? The SH4 kernel checks for and address above 0xC0000000.
> + However, the page mappings in qemu linux-user aren't as restricted
> + and we wind up with the normal stack mapped above 0xF0000000.
> + That said, there is no reason why the kernel should be allowing
> + a gUSA region that spans 1GB. Use a tighter check here, for what
> + can actually be enabled by the immediate move. */
Additionally, I can (and should) fix the address space problem for SH4 in
linux-user/main.c, where we have already done so for MIPS and Nios2.
See the initialization of reserved_va.
r~
next prev parent reply other threads:[~2017-07-07 19:00 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-07 2:20 [Qemu-devel] [PATCH v2 00/27] target/sh4 improvements Richard Henderson
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 01/27] target/sh4: Use cmpxchg for movco Richard Henderson
2017-07-15 23:22 ` Aurelien Jarno
2017-07-16 21:55 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 02/27] target/sh4: Consolidate end-of-TB tests Richard Henderson
2017-07-07 21:42 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 03/27] target/sh4: Introduce TB_FLAG_ENVFLAGS_MASK Richard Henderson
2017-07-07 21:42 ` Aurelien Jarno
2017-07-08 16:29 ` Philippe Mathieu-Daudé
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 04/27] target/sh4: Keep env->flags clean Richard Henderson
2017-07-07 21:42 ` Aurelien Jarno
2017-07-08 16:31 ` Philippe Mathieu-Daudé
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 05/27] target/sh4: Adjust TB_FLAG_PENDING_MOVCA Richard Henderson
2017-07-07 21:42 ` Aurelien Jarno
2017-07-08 16:31 ` Philippe Mathieu-Daudé
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 06/27] target/sh4: Handle user-space atomics Richard Henderson
2017-07-15 22:14 ` Aurelien Jarno
2017-07-15 22:16 ` John Paul Adrian Glaubitz
2017-07-16 2:30 ` Richard Henderson
2017-07-16 15:18 ` Aurelien Jarno
2017-07-16 19:35 ` Richard Henderson
2017-07-16 21:43 ` Aurelien Jarno
2017-07-16 21:59 ` Richard Henderson
2017-07-16 22:16 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 07/27] target/sh4: Recognize common gUSA sequences Richard Henderson
2017-07-17 14:10 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 08/27] linux-user/sh4: Notice gUSA regions during signal delivery Richard Henderson
2017-07-07 7:25 ` John Paul Adrian Glaubitz
2017-07-07 8:20 ` Richard Henderson
2017-07-07 8:30 ` John Paul Adrian Glaubitz
2017-07-07 8:35 ` John Paul Adrian Glaubitz
2017-07-07 16:22 ` Richard Henderson
2017-07-13 9:09 ` John Paul Adrian Glaubitz
2017-07-13 10:56 ` John Paul Adrian Glaubitz
2017-07-13 21:37 ` Richard Henderson
2017-07-13 21:42 ` John Paul Adrian Glaubitz
[not found] ` <20170707163826.22631-1-rth@twiddle.net>
2017-07-07 17:57 ` [Qemu-devel] Fwd: [PATCH v2.5] fixup! " Richard Henderson
2017-07-07 19:00 ` Richard Henderson [this message]
2017-07-17 14:15 ` Aurelien Jarno
2017-07-07 9:05 ` [Qemu-devel] [PATCH v2 08/27] " Laurent Vivier
2017-07-07 9:09 ` Laurent Vivier
2017-07-07 9:13 ` John Paul Adrian Glaubitz
2017-07-15 22:52 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 09/27] linux-user/sh4: Clean env->flags on signal boundaries Richard Henderson
2017-07-15 22:59 ` Aurelien Jarno
2017-07-16 2:33 ` Richard Henderson
2017-07-16 15:18 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 10/27] target/sh4: Hoist register bank selection Richard Henderson
2017-07-07 21:48 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 11/27] target/sh4: Unify cpu_fregs into FREG Richard Henderson
2017-07-07 21:54 ` Aurelien Jarno
2017-07-08 16:54 ` Philippe Mathieu-Daudé
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 12/27] target/sh4: Pass DisasContext to fpr64 routines Richard Henderson
2017-07-07 21:55 ` Aurelien Jarno
2017-07-08 16:56 ` Philippe Mathieu-Daudé
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 13/27] target/sh4: Hoist fp register bank selection Richard Henderson
2017-07-07 21:57 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 14/27] target/sh4: Eliminate unused XREG macro Richard Henderson
2017-07-07 21:59 ` Aurelien Jarno
2017-07-07 2:20 ` [Qemu-devel] [PATCH v2 15/27] target/sh4: Merge DREG into fpr64 routines Richard Henderson
2017-07-07 22:06 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 16/27] target/sh4: Load/store Dr as 64-bit quantities Richard Henderson
2017-07-07 22:14 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 17/27] target/sh4: Simplify 64-bit fp reg-reg move Richard Henderson
2017-07-07 22:15 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 18/27] target/sh4: Unify code for CHECK_NOT_DELAY_SLOT Richard Henderson
2017-07-07 22:17 ` Aurelien Jarno
2017-07-08 16:59 ` Philippe Mathieu-Daudé
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 19/27] target/sh4: Unify code for CHECK_PRIVILEGED Richard Henderson
2017-07-07 22:17 ` Aurelien Jarno
2017-07-08 17:00 ` Philippe Mathieu-Daudé
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 20/27] target/sh4: Unify code for CHECK_FPU_ENABLED Richard Henderson
2017-07-07 22:18 ` Aurelien Jarno
2017-07-08 17:01 ` Philippe Mathieu-Daudé
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 21/27] target/sh4: Tidy misc illegal insn checks Richard Henderson
2017-07-07 22:18 ` Aurelien Jarno
2017-07-08 17:02 ` Philippe Mathieu-Daudé
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 22/27] target/sh4: Introduce CHECK_FPSCR_PR_* Richard Henderson
2017-07-07 22:20 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 23/27] target/sh4: Introduce CHECK_SH4A Richard Henderson
2017-07-07 22:21 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 24/27] target/sh4: Implement fpchg Richard Henderson
2017-07-07 22:23 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 25/27] target/sh4: Add missing FPSCR.PR == 0 checks Richard Henderson
2017-07-07 22:24 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 26/27] target/sh4: Implement fsrra Richard Henderson
2017-07-07 22:27 ` Aurelien Jarno
2017-07-07 2:21 ` [Qemu-devel] [PATCH v2 27/27] target/sh4: Use tcg_gen_lookup_and_goto_ptr Richard Henderson
2017-07-18 7:51 ` [Qemu-devel] [PATCH v2 00/27] target/sh4 improvements Aurelien Jarno
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