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ARM64: KVM: set and get of sys registers in BE case 

Since size of all sys registers is always 8 bytes. Current
code is actually endian agnostic. Just clean it up a bit.
Removed comment about little endian. Change type of pointer
from 'void *' to 'u64 *' to enforce stronger type checking.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Victor Kamensky 2014-06-12 09:30:12 -07:00 committed by Christoffer Dall
parent 9662fb4854
commit 26c99af101
1 changed files with 2 additions and 4 deletions
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6
arch/arm64/kvm/sys_regs.c
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@ -776,17 +776,15 @@ static struct sys_reg_desc invariant_sys_regs[] = {
NULL, get_ctr_el0 }, NULL, get_ctr_el0 },
}; };
static int reg_from_user(void *val, const void __user *uaddr, u64 id) static int reg_from_user(u64 *val, const void __user *uaddr, u64 id)
{ {
/* This Just Works because we are little endian. */
if (copy_from_user(val, uaddr, KVM_REG_SIZE(id)) != 0) if (copy_from_user(val, uaddr, KVM_REG_SIZE(id)) != 0)
return -EFAULT; return -EFAULT;
return 0; return 0;
} }
static int reg_to_user(void __user *uaddr, const void *val, u64 id) static int reg_to_user(void __user *uaddr, const u64 *val, u64 id)
{ {
/* This Just Works because we are little endian. */
if (copy_to_user(uaddr, val, KVM_REG_SIZE(id)) != 0) if (copy_to_user(uaddr, val, KVM_REG_SIZE(id)) != 0)
return -EFAULT; return -EFAULT;
return 0; return 0;