Message ID | 20240704190506.1438493-4-benjamin@sipsolutions.net |
---|---|
State | New |
Headers | show
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X-Spam-Score: -0.2 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From: Benjamin Berg <benjamin.berg@intel.com> The calculation was wrong as it only subtracted one and then rounded down for alignment. However, this is incorrect if host_task_size is not already aligned. 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Series |
Increased address space for 64 bit
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expand
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diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 8e594cda6d77..25cd2c6d7e95 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -328,7 +328,8 @@ int __init linux_main(int argc, char **argv) /* reserve a few pages for the stubs (taking care of data alignment) */ /* align the data portion */ BUILD_BUG_ON(!is_power_of_2(STUB_DATA_PAGES)); - stub_start = (host_task_size - 1) & ~(STUB_DATA_PAGES * PAGE_SIZE - 1); + stub_start = (host_task_size - STUB_DATA_PAGES * PAGE_SIZE) & + ~(STUB_DATA_PAGES * PAGE_SIZE - 1); /* another page for the code portion */ stub_start -= PAGE_SIZE; host_task_size = stub_start;