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From: Laszlo Ersek <lersek@redhat.com>
To: "Ni, Ruiyu" <ruiyu.ni@Intel.com>, Eric Dong <eric.dong@intel.com>,
	edk2-devel@lists.01.org
Subject: Re: [Patch v3] UefiCpuPkg/S3Resume2Pei: disable paging before creating new page table.
Date: Tue, 9 Oct 2018 11:14:11 +0200	[thread overview]
Message-ID: <00d98002-fa7e-58a3-3f19-e00f0db4f297@redhat.com> (raw)
In-Reply-To: <86397fca-fa57-470a-8ca0-31e9ad1204b2@Intel.com>

On 10/09/18 10:59, Ni, Ruiyu wrote:
> On 10/9/2018 4:25 PM, Laszlo Ersek wrote:

>> - for clarity, please use ~(UINTN)BIT31 as mask (even though it makes no
>>    practical difference).
> Actually we could use IA32_CR0 structure to avoid BIT31 usage.

That's a great idea.

I wish I had known about IA32_CR0 (and IA32_CR4) earlier! Now we have a
bunch of ad-hoc bitmask macros around the tree, e.g. CR0_WP, CR0_PG,
CR4_PSE, CR4_PAE in "UefiCpuPkg/CpuDxe/CpuPageTable.c".

Thanks!
Laszlo


      reply	other threads:[~2018-10-09  9:14 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-09  6:01 [Patch v3] UefiCpuPkg/S3Resume2Pei: disable paging before creating new page table Eric Dong
2018-10-09  7:48 ` Ni, Ruiyu
2018-10-09  8:25 ` Laszlo Ersek
2018-10-09  8:59   ` Ni, Ruiyu
2018-10-09  9:14     ` Laszlo Ersek [this message]

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