| f037e416afb38b9ee8ac598d68733fcbaf665384 |
|
21-Jun-2013 |
H. Peter Anvin <hpa@linux.intel.com> |
x86, reloc: Use xorl instead of xorq in relocate_kernel_64.S
There is no point in using "xorq" to clear a register... use "xorl" to
clear the bottom 32 bits, and the upper 32 bits get cleared by virtue
of zero extension.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/n/tip-b76zi1gep39c0zs8fbvkhie9@git.kernel.org
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| c8a22d19dd238ede87aa0ac4f7dbea8da039b9c1 |
|
05-Jun-2013 |
Kees Cook <keescook@chromium.org> |
x86: Fix typo in kexec register clearing
Fixes a typo in register clearing code. Thanks to PaX Team for fixing
this originally, and James Troup for pointing it out.
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/20130605184718.GA8396@www.outflux.net
Cc: <stable@vger.kernel.org> v2.6.30+
Cc: PaX Team <pageexec@freemail.hu>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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| 050438ed5a05b25cdf287f5691e56a58c2606997 |
|
14-Jul-2011 |
Huang Ying <ying.huang@intel.com> |
kexec, x86: Fix incorrect jump back address if not preserving context
In kexec jump support, jump back address passed to the kexeced
kernel via function calling ABI, that is, the function call
return address is the jump back entry.
Furthermore, jump back entry == 0 should be used to signal that
the jump back or preserve context is not enabled in the original
kernel.
But in the current implementation the stack position used for
function call return address is not cleared context
preservation is disabled. The patch fixes this bug.
Reported-and-tested-by: Yin Kangkai <kangkai.yin@intel.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/1310607277-25029-1-git-send-email-ying.huang@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
|
| fee7b0d84cc8c7bc5dc212901c79e93eaf83a5b5 |
|
10-Mar-2009 |
Huang Ying <ying.huang@intel.com> |
x86, kexec: x86_64: add kexec jump support for x86_64
Impact: New major feature
This patch add kexec jump support for x86_64. More information about
kexec jump can be found in corresponding x86_32 support patch.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
|
| fef3a7a17418814733ebde0b40d8e32747677c8f |
|
10-Mar-2009 |
Huang Ying <ying.huang@intel.com> |
x86, kexec: fix kexec x86 coding style
Impact: Cleanup
Fix some coding style issue for kexec x86.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
|
| 0341c14da49e7b93d2998926f6ac89a3129e3fa1 |
|
13-Feb-2009 |
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> |
x86: use _types.h headers in asm where available
In general, the only definitions that assembly files can use
are in _types.S headers (where available), so convert them.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
|
| f5deb79679af6eb41b61112fadcda28b2a4cfb0d |
|
03-Feb-2009 |
Huang Ying <ying.huang@intel.com> |
x86: kexec: Use one page table in x86_64 machine_kexec
Impact: reduce kernel BSS size by 7 pages, improve code readability
Two page tables are used in current x86_64 kexec implementation. One
is used to jump from kernel virtual address to identity map address,
the other is used to map all physical memory. In fact, on x86_64,
there is no conflict between kernel virtual address space and physical
memory space, so just one page table is sufficient. The page table
pages used to map control page are dynamically allocated to save
memory if kexec image is not loaded. ASM code used to map control page
is replaced by C code too.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
|
| 366932deb335f0b84a08463c5c912bd42ac3397a |
|
22-Mar-2008 |
gorcunov@gmail.com <gorcunov@gmail.com> |
x86: relocate_kernel - use predefined macroses for page attributes
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
|
| fd3af53122e616c0ddba44a3da6d1c1877f72d29 |
|
22-Mar-2008 |
gorcunov@gmail.com <gorcunov@gmail.com> |
x86: relocate_kernel - use predefined macroses for processor state
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
|
| a7bba17bf09e1c5bdbdd6c0ab0c7833baedf4653 |
|
22-Mar-2008 |
gorcunov@gmail.com <gorcunov@gmail.com> |
x86: relocate_kernel - use PAGE_SIZE instead of numeric constant
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
|
| 288621e32a7ae3a29c37b45297136c0264e2ff7b |
|
21-Mar-2008 |
Cyrill Gorcunov <gorcunov@gmail.com> |
x86: relocate_kernel - use predefined PAGE_SIZE instead of own alias
This patch does clean up relocate_kernel_(32|64).S a bit by getting rid
of local PAGE_ALIGNED macro. We should use well-known PAGE_SIZE instead
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
|
| 250c22777fe1ccd7ac588579a6c16db4c0161cc5 |
|
11-Oct-2007 |
Thomas Gleixner <tglx@linutronix.de> |
x86_64: move kernel
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
|