From: David Mosberger <davidm@hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] Status of 64K pagesize support
Date: Wed, 28 Mar 2001 22:26:40 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590693005365@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590693005288@msgid-missing>
>>>>> On Mon, 26 Mar 2001 11:51:07 -0600 (CST), Jack Steiner <steiner@sgi.com> said:
Jack> Here is a summary of the changes I've made so far:
Jack> include/asm-ia64/system.h add BOOT_PARAM_ADDR. If pagesize
Jack> is 64K, BOOT_PARAM_ADDR. is not the same as ZERO_PAGE_ADDR.
OK, sounds reasonable. I made that change.
Jack> arch/ia64/boot/bootloader.c change name of ZERO_PAGE_ADDR to
Jack> BOOT_PARAM_ADDR
OK.
Jack> arch/ia64/kernel/fw-emu.c change name of ZERO_PAGE_ADDR to
Jack> BOOT_PARAM_ADDR
OK.
Jack> arch/ia64/kernel/gate.S delete ".align PAGE_SIZE". Code is
Jack> already correctly aligned & gcc doesnt support alignment > 16k
I don't want to do that. The .align is there to make it clear that
the code must be page aligned. We should fix gas instead.
Jack> arch/ia64/kernel/ivt.S add alignment pragmas to the end to
Jack> make the size of the IVT an integral number of pages.
I don't really like that. The ivt shouldn't have to care what the
page size is. I put an alignment directive in the linker script
instead.
Jack> arch/ia64/kernel/setup.c change name of ZERO_PAGE_ADDR to
Jack> BOOT_PARAM_ADDR
OK.
Jack> arch/ia64/sn/fprom/fw-emu.c change name of ZERO_PAGE_ADDR to
Jack> BOOT_PARAM_ADDR
OK.
Jack> drivers/scsi/scsi_dma.c change the FreeSectorBitmap so that
Jack> on 64k page systems, a bit in the map represents 1K instead of
Jack> 512 bytes. Otherwise, you overflow the long used to manage
Jack> free space in a page. I view this as an interim fix..... (I
Jack> swapped mail with dugger about this patch).
I'll wait with this one until there is a permanent fix.
Jack> include/asm-ia64/a.out.h dont make STACK_TOP bigger than the
Jack> max virtual address supported on itanium.
Ditto here.
--david
prev parent reply other threads:[~2001-03-28 22:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-16 21:07 [Linux-ia64] Status of 64K pagesize support Jack Steiner
2001-03-16 21:25 ` Don Dugger
2001-03-16 21:38 ` Jim Wilson
2001-03-16 23:03 ` David Mosberger
2001-03-22 17:49 ` Jack Steiner
2001-03-26 17:51 ` Jack Steiner
2001-03-28 22:26 ` David Mosberger [this message]
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