| Message ID | 20240919124511.282088-6-benjamin@sipsolutions.net |
|---|---|
| State | Accepted |
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From: Benjamin Berg <benjamin@sipsolutions.net>
To: linux-um@lists.infradead.org
Cc: Benjamin Berg <benjamin.berg@intel.com>
Subject: [PATCH v9 05/10] um: Add compile time assert that stub fits on a page
Date: Thu, 19 Sep 2024 14:45:06 +0200
Message-ID: <20240919124511.282088-6-benjamin@sipsolutions.net>
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Content preview: From: Benjamin Berg <benjamin.berg@intel.com> The code
assumes
that the stub code can fit into a single page. This is unlikely to ever
change,
but add a link time assert instead so that there will be no hard to debug
error.
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|
| Series |
Increased address space for 64 bit
|
expand
|
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S index 3385d653ebd0..dc9d9a68af55 100644 --- a/arch/um/kernel/dyn.lds.S +++ b/arch/um/kernel/dyn.lds.S @@ -178,3 +178,6 @@ SECTIONS DISCARDS } + +ASSERT(__syscall_stub_end - __syscall_stub_start <= PAGE_SIZE, + "STUB code must not be larger than one page");