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From: Richard Henderson <rth@twiddle.net>
To: "Alex Bennée" <alex.bennee@linaro.org>,
	"Laurent Vivier" <laurent@vivier.eu>
Cc: peter.maydell@linaro.org,
	Richard Henderson <richard.henderson@linaro.org>,
	qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PULL v2 05/13] accel/tcg: Relax va restrictions on 64-bit guests
Date: Fri, 5 Jun 2020 10:38:13 -0700	[thread overview]
Message-ID: <f8c9afba-4c7c-a410-f42c-c63aa2128ef6@twiddle.net> (raw)
In-Reply-To: <87h7vp4n6w.fsf@linaro.org>

On 6/5/20 7:11 AM, Alex Bennée wrote:
> @@ -467,7 +467,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
>           * It can fail only on 64-bit host with 32-bit target.
>           * On any other target/host host mmap() handles this error correctly.
>           */
> -        if (!guest_range_valid(start, len)) {
> +        if (end < start || !guest_range_valid(start, len)) {
>              errno = ENOMEM;
>              goto fail;
>          }

Interesting.  I was adjusting guest_range_valid tagged pointers yesterday, and
thought that it looked buggy.


r~


  reply	other threads:[~2020-06-05 17:44 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-15 14:43 [PULL v2 00/13] testing, tcg and plugin updates Alex Bennée
2020-05-15 14:43 ` [PULL v2 01/13] tests/guest-debug: catch hanging guests Alex Bennée
2020-05-15 14:43 ` [PULL v2 02/13] travis.yml: Improve the --disable-tcg test on s390x Alex Bennée
2020-05-15 14:43 ` [PULL v2 03/13] linux-user: completely re-write init_guest_space Alex Bennée
2020-05-15 14:43 ` [PULL v2 04/13] exec/cpu-all: Use bool for have_guest_base Alex Bennée
2020-05-15 14:43 ` [PULL v2 05/13] accel/tcg: Relax va restrictions on 64-bit guests Alex Bennée
2020-06-04 14:15   ` Laurent Vivier
2020-06-04 17:31     ` Alex Bennée
2020-06-05 14:11       ` Alex Bennée
2020-06-05 17:38         ` Richard Henderson [this message]
2020-06-05 17:46           ` Alex Bennée
2020-06-05 18:26             ` Richard Henderson
2020-05-15 14:43 ` [PULL v2 06/13] accel/tcg: don't disable exec_tb trace events Alex Bennée
2020-05-15 14:43 ` [PULL v2 07/13] disas: include an optional note for the start of disassembly Alex Bennée
2020-05-15 14:44 ` [PULL v2 08/13] disas: add optional note support to cap_disas Alex Bennée
2020-05-15 14:44 ` [PULL v2 09/13] translate-all: include guest address in out_asm output Alex Bennée
2020-05-15 14:44 ` [PULL v2 10/13] qemu/plugin: Trivial code movement Alex Bennée
2020-05-15 14:44 ` [PULL v2 11/13] qemu/plugin: Move !CONFIG_PLUGIN stubs altogether Alex Bennée
2020-05-15 14:44 ` [PULL v2 12/13] qemu/qemu-plugin: Make qemu_plugin_hwaddr_is_io() hwaddr argument const Alex Bennée
2020-05-15 14:44 ` [PULL v2 13/13] MAINTAINERS: update the orphaned cpus-common.c file Alex Bennée
2020-05-15 15:46 ` [PULL v2 00/13] testing, tcg and plugin updates Peter Maydell

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