From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Lieven <pl@kamp.de>, Richard Henderson <rth@twiddle.net>,
qemu-devel@nongnu.org
Cc: kwolf@redhat.com, peter.maydell@linaro.org, mst@redhat.com,
dgilbert@redhat.com, mreitz@redhat.com
Subject: Re: [Qemu-devel] [PATCH 1/6] oslib-posix: add helpers for stack alloc and free
Date: Mon, 4 Jul 2016 12:48:40 +0200 [thread overview]
Message-ID: <5c329185-c10f-be6c-0dba-d3b72f610457@redhat.com> (raw)
In-Reply-To: <577A3BFD.5000109@kamp.de>
On 04/07/2016 12:35, Peter Lieven wrote:
> Am 04.07.2016 um 12:34 schrieb Paolo Bonzini:
>>
>> On 04/07/2016 12:25, Peter Lieven wrote:
>>>> No, you just pass the stack and the runtime takes care of initializing
>>>> the two stack pointers:
>>>>
>>>> uc.uc_link = &old_uc;
>>>> uc.uc_stack.ss_sp = co->stack;
>>>> uc.uc_stack.ss_size = stack_size;
>>>> uc.uc_stack.ss_flags = 0;
>>> So, you would basically copy the if/elif part from allocatestack.c ?
>> Yes, but note that _STACK_GROWS_{DOWN,UP} and
>> NEED_SEPARATE_REGISTER_STACK are glibc-specific. You need to use
>> HOST_IA64 and HOST_HPPA.
>
> Is HOST_HPPA the only supported target where the stack grows up?
Yes, I think so.
Paolo
next prev parent reply other threads:[~2016-07-04 10:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-30 7:37 [Qemu-devel] [PATCH 0/6] coroutine: mmap stack memory and stack size Peter Lieven
2016-06-30 7:37 ` [Qemu-devel] [PATCH 1/6] oslib-posix: add helpers for stack alloc and free Peter Lieven
2016-07-01 20:12 ` Richard Henderson
2016-07-01 20:49 ` Richard Henderson
2016-07-04 6:18 ` Peter Lieven
2016-07-04 10:19 ` Paolo Bonzini
2016-07-04 10:25 ` Peter Lieven
2016-07-04 10:34 ` Paolo Bonzini
2016-07-04 10:35 ` Peter Lieven
2016-07-04 10:48 ` Paolo Bonzini [this message]
2016-07-04 6:16 ` Peter Lieven
2016-06-30 7:37 ` [Qemu-devel] [PATCH 2/6] coroutine: add a macro for the coroutine stack size Peter Lieven
2016-07-01 20:50 ` Richard Henderson
2016-06-30 7:37 ` [Qemu-devel] [PATCH 3/6] coroutine-ucontext: use helper for allocating stack memory Peter Lieven
2016-07-01 20:52 ` Richard Henderson
2016-06-30 7:37 ` [Qemu-devel] [PATCH 4/6] coroutine-sigaltstack: " Peter Lieven
2016-07-01 20:53 ` Richard Henderson
2016-06-30 7:37 ` [Qemu-devel] [PATCH 5/6] oslib-posix: add a configure switch to debug stack usage Peter Lieven
2016-07-01 20:55 ` Richard Henderson
2016-06-30 7:37 ` [Qemu-devel] [PATCH 6/6] coroutine: reduce stack size to 64kB Peter Lieven
2016-07-01 21:13 ` Richard Henderson
2016-07-04 6:22 ` Peter Lieven
2016-07-04 10:20 ` Paolo Bonzini
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