/*
 * Public Key Encryption
 *
 * Copyright (c) 2015, Intel Corporation
 * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 */
#ifndef _CRYPTO_AKCIPHER_INT_H
#define _CRYPTO_AKCIPHER_INT_H
#include <crypto/akcipher.h>
#include <crypto/algapi.h>

struct akcipher_instance {
	void (*free)(struct akcipher_instance *inst);
	union {
		struct {
			char head[offsetof(struct akcipher_alg, base)];
			struct crypto_instance base;
		} s;
		struct akcipher_alg alg;
	};
};

struct crypto_akcipher_spawn {
	struct crypto_spawn base;
};

/*
 * Transform internal helpers.
 */
static inline void *akcipher_request_ctx(struct akcipher_request *req)
{
	return req->__ctx;
}

static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)
{
	return tfm->base.__crt_ctx;
}

static inline void akcipher_request_complete(struct akcipher_request *req,
					     int err)
{
	req->base.complete(&req->base, err);
}

static inline const char *akcipher_alg_name(struct crypto_akcipher *tfm)
{
	return crypto_akcipher_tfm(tfm)->__crt_alg->cra_name;
}

static inline struct crypto_instance *akcipher_crypto_instance(
		struct akcipher_instance *inst)
{
	return container_of(&inst->alg.base, struct crypto_instance, alg);
}

static inline struct akcipher_instance *akcipher_instance(
		struct crypto_instance *inst)
{
	return container_of(&inst->alg, struct akcipher_instance, alg.base);
}

static inline struct akcipher_instance *akcipher_alg_instance(
		struct crypto_akcipher *akcipher)
{
	return akcipher_instance(crypto_tfm_alg_instance(&akcipher->base));
}

static inline void *akcipher_instance_ctx(struct akcipher_instance *inst)
{
	return crypto_instance_ctx(akcipher_crypto_instance(inst));
}

static inline void crypto_set_akcipher_spawn(
		struct crypto_akcipher_spawn *spawn,
		struct crypto_instance *inst)
{
	crypto_set_spawn(&spawn->base, inst);
}

int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name,
		u32 type, u32 mask);

static inline struct crypto_akcipher *crypto_spawn_akcipher(
		struct crypto_akcipher_spawn *spawn)
{
	return crypto_spawn_tfm2(&spawn->base);
}

static inline void crypto_drop_akcipher(struct crypto_akcipher_spawn *spawn)
{
	crypto_drop_spawn(&spawn->base);
}

static inline struct akcipher_alg *crypto_spawn_akcipher_alg(
		struct crypto_akcipher_spawn *spawn)
{
	return container_of(spawn->base.alg, struct akcipher_alg, base);
}

/**
 * crypto_register_akcipher() -- Register public key algorithm
 *
 * Function registers an implementation of a public key verify algorithm
 *
 * @alg:	algorithm definition
 *
 * Return: zero on success; error code in case of error
 */
int crypto_register_akcipher(struct akcipher_alg *alg);

/**
 * crypto_unregister_akcipher() -- Unregister public key algorithm
 *
 * Function unregisters an implementation of a public key verify algorithm
 *
 * @alg:	algorithm definition
 */
void crypto_unregister_akcipher(struct akcipher_alg *alg);

/**
 * akcipher_register_instance() -- Unregister public key template instance
 *
 * Function registers an implementation of an asymmetric key algorithm
 * created from a template
 *
 * @tmpl:	the template from which the algorithm was created
 * @inst:	the template instance
 */
int akcipher_register_instance(struct crypto_template *tmpl,
		struct akcipher_instance *inst);
#endif
='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;</td><td class='right'>2017-02-01 17:45:02 +0000</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-02-01 21:17:49 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/perf-with-kcore.sh?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>c8f325a59cfc718d13a50fbc746ed9b415c25e92</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/perf-with-kcore.sh?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>d53fbdac9d0781e39a13b2ac6b2bd258cf3b4140</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/perf-with-kcore.sh?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>tools/perf/perf-with-kcore.sh</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/perf-with-kcore.sh?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>bf29bddf0417a4783da3b24e8c9e017ac649326f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/perf-with-kcore.sh?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92&amp;id2=bf29bddf0417a4783da3b24e8c9e017ac649326f'>diff</a>)</td></tr></table>
<div class='commit-subject'>efi/fdt: Avoid FDT manipulation after ExitBootServices()</div><div class='commit-msg'>Some AArch64 UEFI implementations disable the MMU in ExitBootServices(),
after which unaligned accesses to RAM are no longer supported.

Commit:

  abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")

fixed an issue in the memory map handling of the stub FDT code, but
inadvertently created an issue with such firmware, by moving some
of the FDT manipulation to after the invocation of ExitBootServices().

Given that the stub's libfdt implementation uses the ordinary, accelerated
string functions, which rely on hardware handling of unaligned accesses,
manipulating the FDT with the MMU off may result in alignment faults.

So fix the situation by moving the update_fdt_memmap() call into the
callback function invoked by efi_exit_boot_services() right before it
calls the ExitBootServices() UEFI service (which is arguably a better
place for it anyway)

Note that disabling the MMU in ExitBootServices() is not compliant with
the UEFI spec, and carries great risk due to the fact that switching from
cached to uncached memory accesses halfway through compiler generated code
(i.e., involving a stack) can never be done in a way that is architecturally
safe.

Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")
Signed-off-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Tested-by: Riku Voipio &lt;riku.voipio@linaro.org&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Cc: mark.rutland@arm.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: leif.lindholm@linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>Diffstat</a> (limited to 'tools/perf/perf-with-kcore.sh')</div><table summary='diffstat' class='diffstat'>