From: Leif Lindholm <leif.lindholm@linaro.org>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: edk2-devel@lists.01.org, eugene@hp.com
Subject: Re: [PATCH 2/2] Platforms/ARM/FVP: limit VA range to 36 bits
Date: Tue, 13 Sep 2016 11:43:25 +0100 [thread overview]
Message-ID: <20160913104325.GV16080@bivouac.eciton.net> (raw)
In-Reply-To: <1473408939-18044-2-git-send-email-ard.biesheuvel@linaro.org>
On Fri, Sep 09, 2016 at 09:15:39AM +0100, Ard Biesheuvel wrote:
> The FVP model has up to 8 GB of memory (on the Base model), where the
> top 6GB starts at 0x8_8000_0000, and all other memory regions of interest
> live below that. This means we can cover the whole VA space with 36-bits
> worth of VA.
>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
> ---
> Platforms/ARM/VExpress/ArmVExpress-FVP-AArch64.dsc | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/Platforms/ARM/VExpress/ArmVExpress-FVP-AArch64.dsc b/Platforms/ARM/VExpress/ArmVExpress-FVP-AArch64.dsc
> index 3d8e0cfbb57e..60df45dca276 100644
> --- a/Platforms/ARM/VExpress/ArmVExpress-FVP-AArch64.dsc
> +++ b/Platforms/ARM/VExpress/ArmVExpress-FVP-AArch64.dsc
> @@ -175,6 +175,9 @@
> # Set tick frequency value to 100Mhz
> gArmTokenSpaceGuid.PcdArmArchTimerFreqInHz|100000000
>
> + # the entire FVP address space can be covered by 36 bit VAs
> + gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize|36
> +
> [PcdsDynamicDefault.common]
> #
> # The size of a dynamic PCD of the (VOID*) type can not be increased at run
> --
> 2.7.4
>
next prev parent reply other threads:[~2016-09-13 10:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-09 8:15 [PATCH 1/2] Platforms/AMD/Styx: limit VA space to 40 bits Ard Biesheuvel
2016-09-09 8:15 ` [PATCH 2/2] Platforms/ARM/FVP: limit VA range to 36 bits Ard Biesheuvel
2016-09-13 10:43 ` Leif Lindholm [this message]
2016-09-13 10:43 ` [PATCH 1/2] Platforms/AMD/Styx: limit VA space to 40 bits Leif Lindholm
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