hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

KVM: arm64: Make vcpu const in vcpu_read_sys_reg 

vcpu_read_sys_reg should not be modifying the VCPU structure.
Eventually, to handle EL2 sysregs for nested virtualization, we will
call vcpu_read_sys_reg from places that have a const vcpu pointer, which
will complain about the lack of the const modifier on the read path.

Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Christoffer Dall 2018-11-29 12:20:01 +01:00 committed by Marc Zyngier
parent 6e14ef1d12
commit da6f16662a
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/include/asm/kvm_host.h
View File

@ -319,7 +319,7 @@ struct kvm_vcpu_arch {
*/
#define __vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)])
u64 vcpu_read_sys_reg(struct kvm_vcpu *vcpu, int reg);
u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg);
void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg);
/*

2
arch/arm64/kvm/sys_regs.c
View File

@ -76,7 +76,7 @@ static bool write_to_read_only(struct kvm_vcpu *vcpu,
return false;
}
u64 vcpu_read_sys_reg(struct kvm_vcpu *vcpu, int reg)
u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg)
{
if (!vcpu->arch.sysregs_loaded_on_cpu)
goto immediate_read;