Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
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- Subject: Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- From: Yinghai Lu <yinghai@xxxxxxxxxx>
- Date: Mon, 12 Mar 2012 22:39:00 -0700
- Cc: "H. Peter Anvin" <hpa@xxxxxxxxxx>, mingo@xxxxxxxxxx, mjg@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, keithp@xxxxxxxxxx, rui.zhang@xxxxxxxxx, huang.ying.caritas@xxxxxxxxx, stable@xxxxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, linux-tip-commits@xxxxxxxxxxxxxxx
- In-reply-to: <1331555916.3539.88.camel@mfleming-mobl1.ger.corp.intel.com>
On Mon, Mar 12, 2012 at 5:38 AM, Matt Fleming <matt.fleming@xxxxxxxxx> wrote:
> Have you tested my patch? Have you hit this bug or is it just from code
> inspection. I'm starting to feel a bit silly now because I can't see the
> problem you're describing.
from code inspection.
your new init_memory_mapping() will only map mem under max_low_pfn ?
and before that calling for x86_64, max_low_pfn is not updated to max_pfn yet.
+ max_pfn_mapped = init_memory_mapping();
#ifdef CONFIG_X86_64
if (max_pfn > max_low_pfn) {
- max_pfn_mapped = init_memory_mapping(1UL<<32,
- max_pfn<<PAGE_SHIFT);
/* can we preseve max_low_pfn ?*/
max_low_pfn = max_pfn;
}
Please do find one system with more than 4G to test the code.
Thanks
Yinghai
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- References:
- [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- From: tip-bot for Matt Fleming
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
- Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops
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