Re: [PATCH 3/4] ARM: change vmalloc_min to vmalloc_start
From: Linus Walleij <hidden>
Date: 2021-05-18 22:20:16
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On Tue, May 18, 2021 at 2:15 PM Russell King (Oracle) [off-list ref] wrote:
Change the current vmalloc_min, which is supposed to be the lowest address of vmalloc space including the VMALLOC_OFFSET, to vmalloc_start which does not include VMALLOC_OFFSET. Signed-off-by: Russell King (Oracle) <redacted>
Reviewed-by: Linus Walleij <redacted>
+static unsigned long __initdata vmalloc_start = VMALLOC_END - (240 << 20);
When I first read this it took me some time to figure out what was going on here, so if you have time, please fold in a comment with some explanation of that (240 << 20) thing, in some blog post I described it as "an interesting way to write 0x0f000000" but I suppose commit 0536bdf33faf chose this way for a specific reason? (Paging Nico if he can explain it.) Yours, Linus Walleij _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel