From: Scott Ashcroft <scott.ashcroft@talk21.com>
To: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Ingo Molnar <mingo@kernel.org>, "H . Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Borislav Petkov <bp@alien8.de>,
Ben Hutchings <ben@decadent.org.uk>,
Raphael Hertzog <hertzog@debian.org>,
Roger Shimizu <rogershimizu@gmail.com>,
Alexis Murzeau <amurzeau@gmail.com>
Subject: Re: [PATCH] x86/efi: Always map boot service regions into new EFI page tables
Date: Mon, 14 Mar 2016 01:09:12 +0000 [thread overview]
Message-ID: <1457917752.10465.6.camel@talk21.com> (raw)
In-Reply-To: <20160313230736.GB2619@codeblueprint.co.uk>
On Sun, 2016-03-13 at 23:07 +0000, Matt Fleming wrote:
> Assuming the answer to this question is "no", can you try out this
> patch?
>
> diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
> index 8fee5b6f8f66..af74849e8c0f 100644
> --- a/arch/x86/mm/pageattr.c
> +++ b/arch/x86/mm/pageattr.c
> @@ -1055,7 +1055,7 @@ static int populate_pud(struct cpa_data *cpa,
> unsigned long start, pgd_t *pgd,
> /*
> * Map everything starting from the Gb boundary, possibly
> with 1G pages
> */
> - while (end - start >= PUD_SIZE) {
> + while (cpu_has_gbpages && end - start >= PUD_SIZE) {
> set_pud(pud, __pud(cpa->pfn << PAGE_SHIFT |
> _PAGE_PSE |
> massage_pgprot(pud_pgprot)));
>
Yes, that does fix it.
Cheers,
Scott
next prev parent reply other threads:[~2016-03-14 1:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-11 11:19 [GIT PULL] EFI urgent fix for v4.6 queue Matt Fleming
2016-03-11 11:19 ` [PATCH] x86/efi: Always map boot service regions into new EFI page tables Matt Fleming
2016-03-12 18:57 ` [tip:x86/urgent] x86/efi: Fix boot crash by always mapping " tip-bot for Matt Fleming
2016-03-12 23:02 ` Matt Fleming
2016-03-13 17:56 ` Ingo Molnar
2016-03-13 17:09 ` [PATCH] x86/efi: Always map " Scott Ashcroft
2016-03-13 21:58 ` Matt Fleming
2016-03-13 23:07 ` Matt Fleming
2016-03-13 23:44 ` Scott Ashcroft
2016-03-14 1:09 ` Scott Ashcroft [this message]
2016-03-14 10:30 ` Ingo Molnar
2016-03-14 11:35 ` Matt Fleming
2016-03-14 12:05 ` Ingo Molnar
2016-03-14 14:27 ` Matt Fleming
2016-03-14 16:47 ` Ingo Molnar
2016-03-15 15:54 ` Matt Fleming
2016-03-15 16:05 ` Borislav Petkov
2016-03-15 16:25 ` Julia Lawall
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