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From: Julien Grall <julien.grall@arm.com>
To: xen-devel@lists.xenproject.org
Cc: jgross@suse.com, Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>,
	Julien Grall <julien.grall@arm.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>
Subject: [Xen-devel] [PATCH for-4.13] xen/arm: setup: Calculate correctly the size of Xen
Date: Wed, 16 Oct 2019 12:12:51 +0100	[thread overview]
Message-ID: <20191016111251.29214-1-julien.grall@arm.com> (raw)

The current size of Xen is computed using _end - _start + 1. However,
_end is pointing one past the end of Xen, so the size of Xen is
off-by-one.

Signed-off-by: Julien Grall <julien.grall@arm.com>
---
 xen/arch/arm/setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index 705a917abf..51d32106b7 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -819,7 +819,7 @@ void __init start_xen(unsigned long boot_phys_offset,
     /* Register Xen's load address as a boot module. */
     xen_bootmodule = add_boot_module(BOOTMOD_XEN,
                              (paddr_t)(uintptr_t)(_start + boot_phys_offset),
-                             (paddr_t)(uintptr_t)(_end - _start + 1), false);
+                             (paddr_t)(uintptr_t)(_end - _start), false);
     BUG_ON(!xen_bootmodule);
 
     fdt_size = boot_fdt_info(device_tree_flattened, fdt_paddr);
-- 
2.11.0


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             reply	other threads:[~2019-10-16 11:13 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-16 11:12 Julien Grall [this message]
2019-10-16 11:14 ` [Xen-devel] [PATCH for-4.13] xen/arm: setup: Calculate correctly the size of Xen Jürgen Groß
2019-10-16 16:23 ` Stefano Stabellini

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