Re: [PATCH v7 19/72] x86/boot/compressed/64: Add stage1 #VC handler

From: Borislav Petkov
Date: Mon Sep 07 2020 - 12:59:31 EST


On Mon, Sep 07, 2020 at 03:15:20PM +0200, Joerg Roedel wrote:
> +static inline u64 sev_es_rd_ghcb_msr(void)
> +{
> + unsigned long low, high;
> +
> + asm volatile("rdmsr\n" : "=a" (low), "=d" (high) :
> + "c" (MSR_AMD64_SEV_ES_GHCB));
> +
> + return ((high << 32) | low);
> +}
> +
> +static inline void sev_es_wr_ghcb_msr(u64 val)
> +{
> + u32 low, high;
> +
> + low = val & 0xffffffffUL;
> + high = val >> 32;
> +
> + asm volatile("wrmsr\n" : : "c" (MSR_AMD64_SEV_ES_GHCB),
^^

No need for that newline and the one above. I've zapped it while applying.

--
Regards/Gruss,
Boris.

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