Hi Geoff,
On Wednesday 23 November 2016 12:27 AM, Geoff Levand wrote:
Hi Pratyush,
On 11/21/2016 08:32 PM, Pratyush Anand wrote:
When "enable-dcache" is passed to the kexec() command line, kexec-tools
passes this information to purgatory, which in turn enables cache during
sha-256 verification.
What's the point of this enable-dcache option? Why not just
always enable the cache if we can?
As I have written in changelog of patch 1/2
"We are supporting only 4K and 64K page sizes. This code will not work if a
hardware is not supporting at least one of these page sizes. Therefore,
D-cache is disabled by default and enabled only when "enable-dcache" is
passed to the kexec()."
Although this is very unlikely that a hardware will support only 16K
page sizes, however it is possible. Therefore, its better to keep it
disabled by default.
~Pratyush
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