arm64: sysreg: Fix use of XZR in write_sysreg_s
Commit 8a71f0c656
("arm64: sysreg: replace open-coded mrs_s/msr_s with
{read,write}_sysreg_s") introduced a write_sysreg_s macro for writing
to system registers that are not supported by binutils.
Unfortunately, this was implemented with the wrong template (%0 vs %x0),
so in the case that we are writing a constant 0, we will generate
invalid instruction syntax and bail with a cryptic assembler error:
| Error: constant expression required
This patch fixes the template.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
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8fe88a4145
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@ -286,7 +286,7 @@ asm(
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#define write_sysreg_s(v, r) do { \
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#define write_sysreg_s(v, r) do { \
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u64 __val = (u64)v; \
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u64 __val = (u64)v; \
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asm volatile("msr_s " __stringify(r) ", %0" : : "rZ" (__val)); \
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asm volatile("msr_s " __stringify(r) ", %x0" : : "rZ" (__val)); \
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} while (0)
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} while (0)
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static inline void config_sctlr_el1(u32 clear, u32 set)
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static inline void config_sctlr_el1(u32 clear, u32 set)
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