From: Gleb Natapov <gleb@redhat.com>
To: Sebastian Herbszt <herbszt@gmx.de>
Cc: bochs-developers@lists.sourceforge.net, qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: [Bochs-developers] [PATCH v3 5/6] Don't use unreserved memory inBIOS.
Date: Thu, 13 Nov 2008 09:41:26 +0200 [thread overview]
Message-ID: <20081113074126.GI20617@redhat.com> (raw)
In-Reply-To: <16C4151DCE3D406091E6AC948C8CA8A3@FSCPC>
On Thu, Nov 13, 2008 at 01:43:35AM +0100, Sebastian Herbszt wrote:
>> @@ -10032,8 +10032,11 @@ rombios32_05:
>> mov gs, ax
>> cld
>>
>> - ;; init the stack pointer
>> - mov esp, #0x00080000
>> + ;; init the stack pointer to point below EBDA
>> + mov ax, [0x040e]
>> + shl eax, #4
>> + mov esp, #-0x10
>> + add esp, eax
>
> This could be a problem if the OS decides to put the wakeup
> vector just below the EBDA. But as long as the EBDA is located
> above 0x9f000 it should be ok and this can be changed later.
>
The other problem is that extended ROM can relocate EBDA below 0x9f000.
I don't think that should stop us from applying this patch series :)
--
Gleb.
next prev parent reply other threads:[~2008-11-13 7:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-10 9:11 [Qemu-devel] [PATCH v3 0/6] Support for S3 ACPI state (suspend to memory) in BIOS Gleb Natapov
2008-11-10 9:11 ` [Qemu-devel] [PATCH v3 1/6] Move PIC initialization out of line to save space in post code area Gleb Natapov
2008-11-13 0:10 ` [Qemu-devel] Re: [Bochs-developers] [PATCH v3 1/6] Move PIC initialization out ofline " Sebastian Herbszt
2008-11-13 19:15 ` [Qemu-devel] " Stanislav Shwartsman
2008-11-13 20:00 ` Anthony Liguori
2008-11-14 9:47 ` Gleb Natapov
2008-11-14 20:36 ` [Qemu-devel] RE: [Bochs-developers] [PATCH v3 1/6] Move PICinitialization " Sebastian Herbszt
2008-11-10 9:11 ` [Qemu-devel] [PATCH v3 2/6] Add S3 state to DSDT. Handle resume event in the BIOS Gleb Natapov
2008-11-15 17:43 ` [Qemu-devel] Re: [Bochs-developers] [PATCH v3 2/6] Add S3 state to DSDT. Handleresume " Sebastian Herbszt
2008-11-15 17:56 ` Gleb Natapov
2008-11-10 9:11 ` [Qemu-devel] [PATCH v3 3/6] Preserve memory content during SMM init Gleb Natapov
2008-11-10 9:11 ` [Qemu-devel] [PATCH v3 4/6] Execute rombios32 code from rom address 0xe0000 Gleb Natapov
2008-11-10 9:11 ` [Qemu-devel] [PATCH v3 5/6] Don't use unreserved memory in BIOS Gleb Natapov
2008-11-13 0:43 ` [Qemu-devel] Re: [Bochs-developers] [PATCH v3 5/6] Don't use unreserved memory inBIOS Sebastian Herbszt
2008-11-13 7:41 ` Gleb Natapov [this message]
2008-11-10 9:12 ` [Qemu-devel] [PATCH v3 6/6] Don't power down vga card on entering S3 state Gleb Natapov
2008-11-10 12:07 ` Glauber Costa
2008-11-10 13:28 ` Gleb Natapov
2008-11-10 20:25 ` [Qemu-devel] Re: [Bochs-developers] [PATCH v3 6/6] Don't power down vga card onentering " Sebastian Herbszt
2008-11-10 21:20 ` Gleb Natapov
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