Commit b990d37f authored by Marc Zyngier's avatar Marc Zyngier

KVM: arm64: Stop sparse from moaning at __hyp_this_cpu_ptr

Sparse complains that __hyp_this_cpu_ptr() returns something
that is flagged noderef and not in the correct address space
(both being the result of the __percpu annotation).

Pretend that __hyp_this_cpu_ptr() knows what it is doing by
forcefully casting the pointer with __kernel __force.
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
parent 29eb5a3c
...@@ -81,12 +81,19 @@ extern u32 __kvm_get_mdcr_el2(void); ...@@ -81,12 +81,19 @@ extern u32 __kvm_get_mdcr_el2(void);
extern char __smccc_workaround_1_smc[__SMCCC_WORKAROUND_1_SMC_SZ]; extern char __smccc_workaround_1_smc[__SMCCC_WORKAROUND_1_SMC_SZ];
/* Home-grown __this_cpu_{ptr,read} variants that always work at HYP */ /*
* Home-grown __this_cpu_{ptr,read} variants that always work at HYP,
* provided that sym is really a *symbol* and not a pointer obtained from
* a data structure. As for SHIFT_PERCPU_PTR(), the creative casting keeps
* sparse quiet.
*/
#define __hyp_this_cpu_ptr(sym) \ #define __hyp_this_cpu_ptr(sym) \
({ \ ({ \
void *__ptr = hyp_symbol_addr(sym); \ void *__ptr; \
__verify_pcpu_ptr(&sym); \
__ptr = hyp_symbol_addr(sym); \
__ptr += read_sysreg(tpidr_el2); \ __ptr += read_sysreg(tpidr_el2); \
(typeof(&sym))__ptr; \ (typeof(sym) __kernel __force *)__ptr; \
}) })
#define __hyp_this_cpu_read(sym) \ #define __hyp_this_cpu_read(sym) \
......
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